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| mosel vitelic 1 v58c2128(804/404/164)s high performance 2.5 volt 128 mbit ddr sdram 4 banks x 4mbit x 8 (804) 4 banks x 2mbit x 16 (164) 4 banks x 8mbit x 4 (404) preliminary v58c2128(804/404/164)s rev.1.6 march 2002 67758 ddr333b ddr266a ddr266b ddr200 clock cycle time (t ck2 ) 7.5 ns 7.5ns 10 ns 10 ns clock cycle time (t ck2.5 ) 6 ns 7ns 7.5 ns 8 ns system frequency (f ck max ) 167 mhz 143 mhz 133 mhz 125 mhz features high speed data transfer rates with system frequency up to 166 mhz data mask for write control four banks controlled by ba0 & ba1 programmable cas latency: 2, 2.5 programmable wrap sequence: sequential or interleave programmable burst length: 2, 4, 8 for sequential type 2, 4, 8 for interleave type automatic and controlled precharge command power down mode auto refresh and self refresh refresh interval: 4096 cycles/64 ms available in 66-pin 400 mil tsop sstl-2 compatible i/os double data rate (ddr) bidirectional data strobe (dqs) for input and output data, active on both edges on-chip dll aligns dq and dqs transitions with ck transitions differential clock inputs ck and ck power supply 2.5v 0.2v qfc options for fet control. x4 parts. * note: ddr 333b supports pc2700 module with 2.5-3-3 timing ddr 266a supports pc2100 module with 2-3-3 timing ddr 266b supports pc2100 module with 2.5-3-3 timing ddr 200 supports pc1600 module with 2-2-2 timing description the v58c2128(804/404/164)s is a four bank ddr dram organized as 4 banks x 4mbit x 8 (804), 4 banks x 2mbit x 16 (404), or 4 banks x 8mbit x 4 (164). the v58c2128(804/404/164)s achieves high speed data transfer rates by employing a chip archi- tecture that prefetches multiple bits and then syn- chronizes the output data to a system clock. all of the control, address, circuits are synchro- nized with the positive edge of an externally sup- plied clock. i/o transactions are ocurring on both edges of dqs. operating the four memory banks in an inter- leaved fashion allows random access operation to occur at a higher rate than is possible with standard drams. a sequential and gapless data rate is pos- sible depending on burst length, cas latency and speed grade of the device. device usage chart operating temperature range package outline ck cycle time (ns) power temperature mark jedec 66 tsop ii -6 -7 -75 -8 std. l 0c to 70c blank
2 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 66 pin plastic tsop-ii pin configuration top view 1 2 3 4 5 6 9 10 11 12 13 14 7 8 15 16 17 18 19 20 21 22 66 65 64 63 62 61 58 57 56 55 54 53 60 59 52 51 50 49 48 47 46 45 23 24 25 44 43 42 26 27 41 40 28 29 30 31 32 33 39 38 37 36 35 34 v dd nc v ddq nc dq 0 v ssq v ddq nc dq 1 v ssq nc nc nc nc v ddq nc nc v dd nc we cas ras cs nc ba 0 ba 1 v ss nc v ssq nc dq 3 v ddq v ssq nc dq 2 v ddq nc nc nc nc v ssq dqs nc v ref v ss dm ck ck cke nc nc a 11 a 9 ap/a 10 a 0 a 1 a 2 a 3 v dd v dd dq 0 v ddq nc dq 1 v ssq v ddq nc dq 3 v ssq nc nc nc dq 2 v ddq nc nc v dd nc we cas ras cs nc ba 0 ba 1 ap/a 10 a 0 a 1 a 2 a 3 v dd v dd dq 0 v ddq dq 1 dq 2 v ssq v ddq dq 5 dq 6 v ssq dq 7 nc dq 3 dq 4 v ddq ldqs nc v dd q fc/nc nc we qfc/nc qfc/nc cas ras cs nc ba 0 ba 1 ap/a 10 a 0 a 1 a 2 a 3 v dd a 8 a 7 a 6 a 5 a 4 v ss a 11 a 9 a 8 a 7 a 6 a 5 a 4 v ss a 11 a 9 a 8 a 7 a 6 a 5 a 4 v ss v ss dq 7 v ssq nc dq 5 v ddq v ssq nc dq 4 v ddq nc nc nc dq 5 v ssq dqs nc v ref v ss dm ck ck cke nc nc v ss dq 15 v ssq dq 14 dq 13 v ddq v ssq dq 10 dq 9 v ddq dq 8 nc dq 12 dq 11 v ssq udq s nc v ref v ss udm ck ck cke nc nc 66 pin tsop (ii) (400mil x 875 mil) bank address ba0-ba1 row address a0-a11 auto precharge a10 8mb x 16 16mb x 8 32mb x 4 pin names ck, ck differential clock input cke clock enable cs chip select ras row address strobe cas column address strobe we write enable dqs (udqs, ldqs) data strobe (bidirectional) a 0 ?a 11 address inputs ba0, ba1 bank select dq?s data input/output dm (udm, ldm) data mask v dd power (+2.5v) v ss ground v ddq power for i/o?s (+2.5v) v ssq ground for i/o?s nc not connected vref reference voltage for inputs qfc fet control mosel vitelic v58c2128(804/404/164)s 3 v58c2128(804/404/164)s rev. 1.6 march 2002 block diagram row decoder memory array bank 0 4096 x 1024 x 8 column decoder sense amplifier & i(o) bus row decoder memory array bank 1 column decoder sense amplifier & i(o) bus row decoder memory array bank 2 column decoder sense amplifier & i(o) bus row decoder memory array bank 3 column decoder sense amplifier & i(o) bus input buffer output buffer dq 0 -dq 3 column address counter column address buffer row address buffer refresh counter a0 - a11, ba0, ba1 a0 - a9, a11, ap, ba0, ba1 control logic & timing generator ck cke cs ras cas we dm row addresses column addresses dll strobe gen. data strobe ck, ck ck dqs qfc 4096 x 1024 x 8 4096 x 1024 x 8 4096 x 1024 x 8 32m x 4 v 58 c 2 128(80/40/16) 4 s x t xx ddrsdram cmos 2.5v 128mb, 4k refresh 4 banks component rev level component package, t = tsop sstl speed 6 (166mhz@cl2.5) mosel vitelic manufactured 7 (143mhz@cl2.5)) 75(133mhz@cl2.5) x8, x4, x16 8 (125mhz@cl2.5) 4 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 block diagram row decoder memory array bank 0 4096 x 512 x 16 bit column decoder sense amplifier & i(o) bus row decoder memory array bank 1 column decoder sense amplifier & i(o) bus row decoder memory array bank 2 column decoder sense amplifier & i(o) bus row decoder memory array bank 3 column decoder sense amplifier & i(o) bus input buffer output buffer dq 0 -dq 7 column address counter column address buffer row address buffer refresh counter a0 - a11, ba0, ba1 a0 - a9, ap, ba0, ba1 control logic & timing generator ck cke cs ras cas we dm row addresses column addresses dll strobe gen. data strobe ck, ck ck dqs qfc 16m x 8 4096 x 512 x 16 bit 4096 x 512 x 16 bit 4096 x 512 x 16 bit 5 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 block diagram row decoder memory array bank 0 4096 x 256 x 32 bit column decoder sense amplifier & i(o) bus row decoder memory array bank 1 column decoder sense amplifier & i(o) bus row decoder memory array bank 2 column decoder sense amplifier & i(o) bus row decoder memory array bank 3 column decoder sense amplifier & i(o) bus input buffer output buffer dq 0 -dq 15 column address counter column address buffer row address buffer refresh counter a0 - a11, ba0, ba1 a0 - a8, ap, ba0, ba1 control logic & timing generator ck cke cs ras cas we dm row addresses column addresses dll strobe gen. data strobe ck, ck ck dqs qfc 4096 x 256 x 32 bit 4096 x 256 x 32 bit 4096 x 256 x 32 bit 8m x 16 capacitance* t a = 0 to 70 c, v cc = 2.5v 0.2v, f = 1 mhz * note: capacitance is sampled and not 100% tested. absolute maximum ratings* operating temperature range ..................0 to 70 c storage temperature range ................-55 to 150 c v dd supply voltage relative to v ss .....-1v to +3.6v v ddq supply voltage relative to v ss ......................................................-1v to +3.6v vref and inputs voltage relative to v ss ......................................................-1v to +3.6v i/o pins voltage relative to v ss ..........................................-0.5v to v ddq +0.5v power dissipation .......................................... 1.6 w data out current (short circuit)...................... 50 ma *note: stresses above those listed under ?absolute maximum ratings? may cause permanent damage of the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. input capacitance symbol min max unit ba0, ba1, cke, cs , ras , (cas , a0-a11, we ) c ini 23.0pf input capacitance (ck, ck )c in2 23.0pf data & dqs i/o capacitance c out 45pf input capacitance (dm) c in3 45.0pf 6 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s signal pin description pin type signal polarity function ck ck input pulse positive edge the system clock input. all inputs except dqs and dms are sampled on the rising edge of ck. cke input level active high activates the ck signal when high and deactivates the ck signal when low, thereby ini- tiates either the power down mode, or the self refresh mode. cs input pulse active low cs enables the command decoder when low and disables the command decoder when high. when the command decoder is disabled, new commands are ignored but previous operations continue. ras , cas we input pulse active low when sampled at the positive rising edge of the clock, cas , ras , and we define the command to be executed by the sdram. dqs input/ output pulse active high active on both edges for data input and output. center aligned to input data edge aligned to output data a0 - a11 input level ? during a bank activate command cycle, a0-a11 defines the row address (ra0-ra11) when sampled at the rising clock edge. during a read or write command cycle, a0-an defines the column address (ca0-can) when sampled at the rising clock edge.can depends on the sdram organization: 32m x 4 ddr can = ca9, a11 16m x 8 ddr can = ca9 8m x 16 ddr can = ca8 in addition to the column address, a10(=ap) is used to invoke autoprecharge operation at the end of the burst read or write cycle. if a10 is high, autoprecharge is selected and ba0, ba1 defines the bank to be precharged. if a10 is low, autoprecharge is disabled. during a precharge command cycle, a10(=ap) is used in conjunction with ba0 and ba1 to control which bank(s) to precharge. if a10 is high, all four banks will be precharged simultaneously regardless of state of ba0 and ba1. ba0, ba1 input level ? selects which bank is to be active. dqx input/ output level ? data input/output pins operate in the same manner as on conventional drams. dm, ldm, udm input pulse active high in write mode, dm has a latency of zero and operates as a word mask by allowing input data to be written if it is low but blocks the write operation if is high for x 16 ldm corresponds to data on dq0-dq7, udm corresponds to data on dq8-dq15. qfc output level active low fet control: output during every read and write access. can be used to control isolation switches on modules. vdd, vss supply power and ground for the input buffers and the core logic. vddq vssq supply ? ? isolated power supply and ground for the output buffers to provide improved noise immunity. vref input level ? sstl reference voltage for inputs 7 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 address bus cas latency a 6 a 5 a 4 latency 0 0 0 reserve 0 0 1 reserve 01 0 2 01 1 3 1 0 0 reserve reserve 10 1 1 1 0 2.5 1 1 1 reserve burst length a 2 a 1 a 0 latency sequential interleave 0 0 0 reserve reserve 001 2 2 010 4 4 011 8 8 1 0 0 reserve reserve 1 0 1 reserve reserve 1 1 0 reserve reserve 1 1 1 reserve reserve a 7 mode 0 normal 1 test a 3 burst type 0 sequential 1 interleave * rfu(reserved for future use) should stay "0" during mrs cycle. a 8 dll reset 0no 1 yes mode register set 0 rfu : must be set "0" extended mode register mode register dll i/o qfc a 0 dll enable 0 enable 1 disable a 2 qfc contro l 0 disable 1 enable a 1 i/o strength 0 full 1 half ba 0 a n ~ a 0 0 (existing)mrs cycle 1 extended funtions(emrs) command 2 01 5 34 8 67 ck, ck t ck t mrd precharge all banks mode register set t rp *2 *1 any command ba 1 ba 0 a 11 a 10 a 9 a 8 a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 0tm cas latency bt burst length rfu dll mrs mrs mode register set (mrs) the mode register stores the data for c ontrolling t he various operating modes of ddr sdram. it programs cas latency, addressing mode, burst length, test mode, dll reset and various vendor specific options to make ddr sdram useful for a variety of different applications. the default value of the mode register is not defined, therefore t he mode register must be written after emrs setting for proper ddr sdram operation. the mode register is written by asserting low on cs , ras , cas , we and ba 0 (the ddr sdram should be in all bank precharge with cke already high prior to writing into the mode register). the state of address pins a 0 ~ a 11 in the same cycle as cs , ras , cas , we and ba0 low is written in the mode register. two clock cycles are required to meet t mrd spec. the mode register contents can be changed using the same com- mand and clock cycle requirements during operation as long as all banks are in the idle state. the mode reg- ister is divided into various fields depending on functionality. the burst length uses a 0 ~ a 2 , addressing mode uses a 3 , cas latency (read latency from column address) uses a 4 ~ a 6 . a 7 is a mosel vitelic specific test mode during production test. a 8 is used for dll reset. a 7 must be set to low for normal mrs operation. refer to the table for specific codes for various burst length, addressing modes and cas latencies. 1. mrs can be issued only at all banks precharge state. 2. minimum trp is required to issue mrs command. 8 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s mode register set timing burst mode operation burst mode operation is used to provide a constant flow of data to memory locations (write cycle), or from memory locations (read cycle). two par ameters define how the burst mode will operate: burst sequence and burst length. these parameters are programmable and are determined by address bits a 0 ?a 3 during the mode register set command. burst type defines the sequence in which the burst data will be delivered or stored to the sdram. two types of burst sequence are supported: sequential and interleave. the burst length controls the number of bits that will be output after a read command, or the number of bits to be input after a write command. the burst length can be programmed to values of 2, 4, or 8. see the burst length and sequence table below for programming information. burst length and sequence burst length starting length (a 2 , a 1 , a 0 ) sequential mode interleave mode 2 xx0 0, 1 0, 1 xx1 1, 0 1, 0 4 x00 0, 1, 2, 3 0, 1, 2, 3 x01 1, 2, 3, 0 1, 0, 3, 2 x10 2, 3, 0, 1 2, 3, 0, 1 x11 3, 0, 1, 2 3, 2, 1, 0 8 000 0,1, 2, 3, 4, 5, 6, 7 0,1, 2, 3, 4, 5, 6, 7 001 1, 2, 3, 4, 5, 6, 7, 0 1, 0, 3, 2, 5, 4, 7, 6 010 2, 3, 4, 5, 6, 7, 0, 1 2, 3, 0, 1, 6, 7, 4, 5 011 3, 4, 5, 6, 7, 0, 1, 2 3, 2, 1, 0, 7, 6, 5, 4 100 4, 5, 6, 7, 0, 1, 2, 3 4, 5, 6, 7, 0, 1, 2, 3 101 5, 6, 7, 0, 1, 2, 3, 4 5, 4, 7, 6, 1, 0, 3, 2 110 6, 7, 0, 1, 2, 3, 4, 5 6, 7, 4, 5, 2, 3, 0, 1 111 7, 0, 1, 2, 3, 4, 5, 6 7, 6, 5, 4, 3, 2, 1, 0 t5 t0 t1 t2 t3 t4 t6 t7 t8 t rp t mrd t ck pre- all mrs/emrs any m ode register set (mrs) or extended mode register set (emrs) can be issued only when all banks are in the idle state. ck, ck command i f a mrs command is issued to reset the dll, then an additional 200 clocks must occur prior to issuing any new command t9 t o allow time for the dll to lock onto the clock. 9 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 bank activate command the bank activate command is issued by holding cas and we high with cs and ras low at the rising edge of the clock. the ddr sdram has four independent banks, so two bank select addresses (ba 0 and ba 1 ) are supported. the bank activate command must be applied before any read or write operation can be executed. the delay from the bank activate command to the first read or write command must meet or exceed the minimum ras to cas delay time (t rcd min). once a bank has been activated, it must be pre- charged before another bank activate command can be applied to the same bank. the minimum time interval between interleaved bank activate commands (bank a to bank b and vice versa) is the bank to bank delay time (t rrd min). bank activation timing read operation with the dll enabled, all devices operating at the same frequency within a system are ensured to have the same timing relationship between dq and dqs relative to the ck input regardless of device density, pro- cess variation, or technology generation. the data strobe signal (dqs) is driven off chip simultaneously with the output data (dq) during each read cycle. the same internal clock phase is used to drive both the output data and data strobe signal off chip to minimize skew between data strobe and output data. this internal clock phase is nominally aligned to the input differential clock (ck, ck ) by the on-chip dll. therefore, when the dll is enabled and the clock fre- quency is within the specified range for proper dll operation, the data strobe (dqs), output data (dq), and the system clock (ck) are all nominally aligned. since the data strobe and output data are tightly coupled in the syst em, the data strobe signal may be de- layed and used to latch the output data into the receiving device. the tolerance for skew between dqs and dq (t dqsq ) is tighter than that possible for ck to dq (t ac ) or dqs to ck (t dqsck ). t0 t1 t2 t3 tn tn+1 tn+2 tn+3 tn+4 tn+5 ( cas latency = 2; burst length = any) t rrd (min) t rp (min) t rc t rcd (min) begin precharge bank a ck, ck b a/address command bank/col read/a bank/row activate/a activate/b pre/a bank/row activate/a bank bank/row t ras (min) 10 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s output data (dq) and data strobe (dqs) timing relative to the clock (ck) during read cycles the minimum time during which the output data (dq) is valid is critical for the receiving device (i.e., a mem- ory controller device). this also applies to the data strobe during the read cycle since it is tightly coupled to the output data. the minimum data output valid time (t dv ) and minimum data strobe valid time (t dqsv ) are de- rived from the minimum clock high/low time minus a margin for variation in data access and hold time due to dll jitter and power supply noise. ( cas latency = 2.5; burst length = 4 ) t0 t1 t2 t3 t4 nop nop nop d 0 ck, ck c ommand dqs dq d 2 t dqsck (max) t dqsck (min) d 1 t ac (min) t ac (max) d 3 read nop 11 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 output data and data strobe valid window for ddr read cycles read preamble and postamble operation prior to a burst of read data and given that the controller is not currently in burst read mode, the data strobe signal (dqs), must transition from hi-z to a valid logic low. the is referred to as the data strobe ?read pream- ble? (t rpre ). this transition from hi-z to logic low nominally happens one clock cycle prior to the first edge of valid data. once the burst of read data is concluded and given that no subsequent burst read operations are initiated, the data strobe signal (dqs) transitions from a logic low level back to hi-z. this is referred to as the data strobe ?read postamble? (t rpst ). this transition happens nominally one-half clock period after the last edge of valid data. consecutive or ?gapless? burst r ead operations are possible from the same ddr sdram device with no requirement for a data strobe ?read? preamble or postamble in between the groups of burst data. the data strobe read preamble is required before the ddr device drives the first output data off chip. similarly, the data strobe postamble is initiated when the device stops driving dq data at the termination of read burst cycles. d 0 d 1 ( cas latency = 2; burst length = 2) t0 t1 t2 t3 t4 read nop nop nop c ommand dqs dq t dv (min) ck, ck t dqsv (min) 12 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s data strobe preamble and postamble timings for ddr read cycles consecutive burst read operation and effects on the data strobe preamble and postamble ( cas latency = 2; burst length = 2) t0 t1 t2 t3 t4 read nop nop nop d 0 d 1 ck, ck c ommand dqs dq t rpre (max) t rpst (min) t rpre (min) t rpst (max) t dqsq (max) t dqsq (min) nop read b nop nop nop nop read a d0 a d1 a nop d2 a d3 a command dqs dq burst read operation (cas latency = 2; burst length = 4) ck, ck nop d0 b d1 b d2 b d3 b nop read b nop nop nop nop read a d0 a d1 a nop d2 a d3 a command dqs dq burst read operation ( cas latency = 2; burst length = 4) ck, ck nop d0 b d1 b d2 b d3 b 13 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 auto precharge operation the auto precharge operation can be issued by having column address a 10 high when a read or write command is issued. if a 10 is low when a read or write command is issued, then normal read or write burst operation is executed and the bank remains active at the completion of the burst sequence. when the auto precharge command is activated, the active bank automatically begins to precharge at the earliest possible moment during the read or write cycle once t ras (min) is satisfied. read with auto precharge if a read with auto precharge command is initiated, the ddr sdram will enter the precharge operation n-clock cycles measured from the last data of the burst read cycle where n is equal to the cas latency pro- grammed into the device. once the autoprecharge operation has begun, the bank cannot be reactivated until the minimum precharge time (t rp ) has been satisfied. read with autoprecharge timing ( cas latency = 2; burst length = 4) t0 t1 t2 t3 t4 t5 t6 t7 t8 d 0 d 1 d 2 d 3 begin autoprecharge ba act r w/ap nop nop nop nop nop nop ck, ck c ommand dqs dq t ras (min) t p (min) earliest bank a reactivate t9 14 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s read with autoprecharge timing as a function of cas latency t0 t1 t2 t3 t4 t5 t6 t7 t8 nop rap nop nop nop nop ba nop ck, ck c ommand dqs dq t ras (min) t rp (min) ba nop t9 d 0 d 1 d 2 d 3 dqs dq cas latency=2 cas latency=2.5 ( cas latency = 2, 2.5, burst length = 4) d 0 d 1 d 2 d 3 15 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 precharge timing during read operation for the earliest possible precharge command without interrupting a read burst, the precharge command may be issued on the rising clock edge which is cas latency (cl) clock cycles before the end of the read burst. a new bank activate (ba) command may be issued to the same bank after the ras precharge time (t rp ). a precharge command can not be issued until t ras (min) is satisfied. read with precharge timing as a function of cas latency t0 t1 t2 t3 t4 t5 t6 t7 t8 d 0 d 1 d 2 d 3 nop read nop nop pre a nop ba nop ck, ck c ommand dqs dq t ras (min) t rp (min) ba nop t9 d 0 d 1 d 2 d 3 dqs dq cas latency=2 cas latency=2.5 ( cas latency = 2, 2.5, 3; burst length = 4) 16 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s burst stop command the burst stop command is valid only during burst read cycles and is initiated by having ras and cas high with cs and we low at the rising edge of the clock. when the burst stop command is issued during a burst read cycle, both the output data (dq) and data strobe (dqs) go to a high impedance state after a delay (l bst ) equal to the cas latency programmed into the device. if the burst stop command is issued during a burst write cycle, the command wi ll be treated as a nop command. read terminated by burst stop command timing ( cas latency = 2, 2.5, 3; burst length = 4) t0 t1 t2 t3 t4 t5 t6 bst nop nop nop nop read d 0 d 1 ck, ck command dqs dq d 0 d 1 dqs dq c as latency = 2 c as latency = 2.5 l bst l bst l bst 17 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 read interrupted by a precharge a burst read operation can be interrupted by a precharge of the same bank. the precharge command to output disable latency is equivalent to the cas latency. read interrupted by a precharge timing burst write operation the burst write command is issued by having cs , cas , and we low while holding ras high at the rising edge of the clock. the address inputs determine the starting column address. the memory controller is re- quired to provide an input data strobe (dqs) to the ddr sdram to strobe or latch the input data (dq) and data mask (dm) into the device. during write cycles, the data strobe applied to the ddr sdram is required to be nominally centered within the data (dq) and data mask (dm) valid windows. the data strobe must be driven high nominally one clock after the write command has been registered. timing parameters t dqss (min) and t dqss (max) define the allowable window when the data strobe must be driven high. input data for the first burst write cycle must be applied one clock cycle after the write command is registered into the device (wl=1). the input data valid window is nominally centered around the midpoint of the data strobe signal. the data window is defined by dq to dqs setup time (t qdqss ) and dq to dqs hold time (t qdqsh ). all data inputs must be supplied on each ri sing and fallin g edge of the data strobe until the burst length is completed. when the burst has finished, any additional data supplied to the dq pins will be ignored. write preamble and postamble operation prior to a burst of write data and given that the controller is not currently in burst write mode, the data strobe signal (dqs), must transition from hi-z to a valid logic low. this is referred to as the data strobe ?write preamble?. this transition from hi-z to logic low nominally happens on the falling edge of the clock after the write com- mand has been registered by the device. the preamble is explicitly defined by a setup time (t wpres (min)) and hold time (t wpreh (min)) referenced to the first falling edge of ck after the write command. t0 t1 t2 t3 t4 t5 t6 t7 t8 d 0 d 1 d 2 d 3 nop read nop nop pre a nop ba nop ck, ck c ommand dqs dq t ras (min) t rp (min) ba nop t9 d 0 d 1 d 2 d 3 dqs dq cas latency=2 cas latency=2.5 ( cas latency = 2, 2.5, 3; burst length = 8) 18 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s burst write timing once the burst of write data is concluded and given that no subsequent burst write operations are initiated, the data strobe signal (dqs) transitions from a logic low level back to hi-z. this is referred to as the data strobe ?write postamble?. this transition happens nominally one-half clock period after the last data of the burst cycle is latched into the device. ( cas latency = any; burst length = 4) t0 t1 t2 t3 t4 write nop nop nop d 0 d 1 d 2 d 3 ck, ck c ommand d qs(nom) dq(nom) t wpres t wpreh t dqss t wpst t qdqsh d 0 d 1 d 2 d 3 dqs(min) dq(min) t dqss (min) d 0 d 1 d 2 d 3 d qs(max) dq(max) t wpres (min) t dqss (max) t qdqss t qdqss t qdqsh t wpreh (min) t wpreh (max) t wpres (max) 19 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 write interrupted by a precharge a burst write can be interrupted before completion of the burst by a precharge command, with the only restriction being that the interval that separ ates the commands be at least one clock cycle. write interrupted by a precharge timing write with auto precharge if a 10 is high when a write command is issued, the write with auto precharge function is performed. any new command to the same bank should not be issued until the internal precharge is completed. the internal precharge begins after keeping t wr (min.). write with auto precharge timing ( cas latency = 2; burst length = 8 ) t0 t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 write a nop pre a nop nop nop nop nop nop nop nop ck, ck c ommand dqs t12 dm d 0 d 1 d 2 d 3 dq data is masked by precharge command data is masked by dm input dqs input ignored d 4 d 5 t wr d 6 ( cas latency = any; burst length = 4) t0 t1 t2 t3 t4 t5 t6 t7 t8 d 0 d 1 d 2 d 3 nop wap nop nop nop nop nop nop ba ck, ck c ommand dqs dq t ras (min) t rp (min) ba nop t9 t10 t wr (min) begin autoprecharge 20 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s precharge timing during write operation precharge timing for write operations in drams requires enough time to satisfy the write recovery require- ment. this is the time required by a dram sense amp to fully store the voltage level. for ddr sdrams, a timing parameter (t wr ) is used to indicate the required amount of time between the last valid write operation and a precharge command to the same bank. the ?write recovery? operation begins on the rising clock edge after the last dqs edge that is used to strobe in the last valid write data. ?write recovery? is complete on the 2nd next rising clock edge that is used to strobe in the precharge command. write with precharge timing ( cas latency = any; burst length = 4) t0 t1 t2 t3 t4 t5 t6 t7 t8 d 0 d 1 d 2 d 3 nop write nop nop nop nop pre a nop ck, ck c ommand dqs dq t ras (min) t rp (min) ba nop t9 t1 0 t wr d 0 d 1 d 2 d 3 dqs dq t wr ba 21 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 data mask function the ddr sdram has a data mask functi on that is used in co njunction with the writ e cycle, but not the read cycle. when the data mask is activated (dm high) during a write operation, the write is blocked (mask to data latency = 0). when issued, the data mask must be referenced to both the rising and falling edges of data strobe. data mask timing burst interruption read interrupted by a read a burst read can be interrupted before completion of the burst by issuing a new read command to any bank. when the previous burst is interrupted, the remaining addresses are overridden with a full burst length starting with the new address. the data from the first read command continues to appear on the outputs until the cas latency from the interrupting read command is satisfied. at this point, the data from the interrupting read command appears on the bus. read commands can be issued on each rising edge of the system clock. it is illegal to interrupt a read with autoprecharge command with a read command. read interrupted by a read command timing ( cas latency = any; burst length = 8) t0 t1 t2 t3 t4 t5 t6 t7 t8 d 0 d 1 d 2 d 3 d 4 d 5 d 6 d 7 nop nop nop nop nop nop nop write ck, ck c ommand dqs dq dm t9 t dmdqss t dmdqss t dmdqsh t dmdqsh ( cas latency = 2; burst length = 4) t0 t1 t2 t3 t4 t5 t6 t7 t8 read b nop nop nop nop nop nop da0 da1 db0 db1 read a db2 db3 ck, ck c ommand dqs dq t9 22 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s read interrupted by a write to interrupt a burst read with a write command, a burst stop command must be asserted to stop the burst read operation and 3-state the dq bus. additionally, control of the dqs bus must be turned around to allow the memory controller to drive the data strobe signal (dqs) into the ddr sdram for the write cycles. once the burst stop command has been issued, a write command can not be issued until a minimum delay or latency (l bst ) has been satisfied. this latency is measured from the burst stop command and is equivalent to the cas latency programmed into the mode register. in instances where cas latency is measured in half clock cycles, the minimum delay (l bst ) is rounded up to the next full cl ock cycle (i.e., if cl=2 then l bst =2, if cl=2.5 then l bst =3). it is illegal to interrupt a read wi th autoprecharge command with a write command. read interrupted by burst stop command followed by a write command timing write interrupted by a write a burst write can be interrupted before completion by a new write command to any bank. when the pre- vious burst is interrupted, the remaining addresses are overridden with a full burst length starting with the new address. the data from the first write command continues to be input into the device until the write latency of the interrupting write command is satisfied (wl=1) at this point, the data from the interrupting write com- mand is input into the device. write commands can be issued on each rising edge of the system clock. it is illegal to interrupt a write with autoprecharge command with a write command. write interrupted by a write command timing ( cas latency = 2; burst length = 4) t0 t1 t2 t3 t4 t5 t6 t7 t8 bst nop write nop nop nop nop d 0 d 1 read d 0 d 1 d 2 d 3 ck, ck c ommand dqs dq t9 l bst ( cas latency = any; burst length = 4) t0 t1 t2 t3 t4 t5 t6 t7 t8 write a nop nop write b nop nop nop nop da0 da1 db0 db1 db2 db3 ck, ck c ommand dqs dq dm t9 write latency dm0 dm1 dm0 dm1 dm2 dm3 23 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 write interrupted by a read a burst write can be interrupted by a read command to any bank. if a burst write operation is interrupted prior to the end of the burst operation, then the last two pieces of input data prior to the read command must be masked off with the data mask (dm) input pin to prevent invalid data from being written into the memory array. any data that is present on the dq pins coincident with or following the read command will be masked off by the read command and will not be written to the array. the memory controller must give up control of both the dq bus and the dqs bus at least one clo ck cycle before the read dat a appears on the outputs in order to avoid contention. in order to avoid data contention within the device, a delay is required (t cdlr ) from the last valid data input before a read command can be issued to the device. it is illegal to interrupt a write with autoprecharge command with a read command. write interrupted by a read command timing auto refresh the auto refresh command is issued by having cs , ras , and cas held low with cke and we high at the rising edge of the clock. all banks must be precharged and idle for a t rp (min) before the auto refresh com- mand is applied. no control of the address pins is required once this cycle has started because of the internal address counter. when the auto refresh cycle has completed, all banks will be in the idle state. a delay be- tween the auto refresh command and the next activate command or subsequent auto refresh command must be greater than or equal to the t rfc (min). commands may not be issued to the device once an auto refresh cycle has begun. cs input must remain high during the refresh period or nop commands must be registered on each rising edge of the ck input until the refresh period is satisfied. auto refresh timing ( cas latency = 2; burst length = 8 ) t0 t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 write nop read nop nop nop nop nop nop nop nop ck, ck c ommand dqs t12 dm d 2 d 3 d 4 d 5 d 0 d 2 d 3 d 4 d 5 d 6 d 1 d 7 dq data is masked by read command data is masked by dm input dqs input ignored d 0 d 1 t wtr t0 t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 nop nop nop ck, ck c ommand cke t11 auto ref any high pre all t rfc t rp 24 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s self refresh a self refresh command is defined by having cs , ras , cas and cke held low with we high at the rising edge of the clock (ck). once the self refresh command is initiated, cke must be held low to keep the device in self refresh mode. during the self refresh operation, all inputs except cke are ignored. the clock is inter- nally disabled during self refresh operation to reduce power consumption. the self refresh is exited by sup- plying stable clock input before returning cke high, asserting deselect or nop command and then asserting cke high for longer than t srex for locking of dll. the auto refresh is required before self refresh entry and after self refresh exit. power down mode the power down mode is entered when cke is low and exited when cke is high. once the power down mode is initiated, all of the receiver circuits except clock, cke and dll circuit are gated off to reduce power consumption. all banks should be in idle state prior to entering the precharge power down mode and cke should be set high at least 1tck+tis prior to row active command. during power down mode, refresh opera- tions cannot be performed, therefore the device cannot remain in power down mode longer than the refresh period (t ref ) of the device. command cke stable clock t srex auto refresh nop self refresh ck, ck cke precharge active read nop active power down power down exit active entry power exit down power entry down precharge precharge command ck, ck 25 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 qfc function qfc function when driven low on reads coincident with the start of preamble, this dram output signal says that one cy- cle later there will be the first valid dqs output and returned to hi-z after this finishing a burst operation. it is also driven low shortly after a write command is received and returned to hi-z shortly after the last data strobe transition is received. whenever the device is in standby, the signal is hi-z. dqs is intended to enable an external data switch. qfc can be enabled or disabled through emrs control. qfc timing on read operation qfc on reads is enabled coincident with the start of dqs preamble, and disabled coincident with the end of dqs postamble figure 26. qfc timing on read operation c ommand 2 01 5 34 8 67 read dout 0 dout 1 hi-z dqs dq? s qfc t qpre t qpst cl = 2, bl = 2 ck ck 26 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s qfc timing on write operation qfc on writes is enabled as soon as possible after the clock edge of write command and disabled as soon as possible after the last dqs-in low going edge. figure 27. : qfc timing on write operation with tdqssmax figure 28. : qfc timing on write operation with tdqssmin 1. the value of tqck min. is 1.25ns from the last low going data strobe edge to qfc hi-z. 2. the value of tqck max. is 0.5tck from the first high going clock edge after the last low going data strobe edge to qfc hi-z. 2 01 5 34 8 67 hi-z dqs@tdqssmax qfc t qck *1 t qoh ? min. dout ? 0 dout ? 1 ????????????? bl ? = ? 2 write dq? s@tdqssmax command ck ck *2 t qoh ? max. dqs@tdqssmin dq? s@tdqssmin 2 01 5 34 8 67 hi-z qfc t qck *1 t qoh ? min. dout ? 0 dout ? 1 ????????????? bl ? = ? 2 write command ck ck *2 t qoh ? max. 27 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 truth table 2 ? cke (notes: 1-4) note: 1. cke n is the logic state of cke at clock edge n ; cke n-1 was the state of cke at the previous clock edge. 2. current state is the state of the ddr sdram immediately prior to clock edge n . 3. commandn is the command registered at clock edge n , and actionn is a result of commandn. 4. all states and sequences not shown are illegal or reserved. 5. deselect or nop commands should be issued on any clock edges occurring during the t xsr period. a minimum of 200 clock cycles is needed before applying a read command, for the dll to lock. cken-1 cken current state commandn actionn notes ll power-down x maintain power-down self refresh x maintain self refresh lh power-down deselect or nop exit power-down self refresh deselect or nop exit self refresh 5 hl all banks idle deselect or nop precharge power-down entry bank(s) active deselect or nop active power-down entry all banks idle auto refresh self refresh entry h h see truth table 3 28 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s truth table 3 ? current state bank n - command to bank n (notes: 1-6; notes appear below and on next page) note: 1. this table applies when cke n-1 was high and cke n is high (see truth table 2) and after t xsr has been met (if the previous state was self refresh). 2. this table is bank-specific, except where noted, i.e., the current state is for a specific bank and the commands shown are those allowed to be issued to that bank when in that state. exceptions are covered in the notes below. 3. current state definitions: idle: the bank has been precharged, and t rp has been met. row active: a row in the bank has been activated, and t rcd has been met. no data bursts/accesses and no register accesses are in progress. read: a read burst has been initiated, with auto precharge disabled, and has not yet terminated or been terminated. write: a write burst has been initiated, with auto precharge disabled, and has not yet terminated or been terminated. 4. the following states must not be interrupted by a command issued to the same bank. deselect or nop com- mands, or allowable commands to the other bank should be issued on any clock edge occurring during these states. allowable commands to the other bank are determined by its current state and truth table 3, and according to truth table 4. precharging: starts with registration of a precharge command and ends when t rp is met. once t rp is met, the bank will be in the idle state. current state /cs /ras /cas /we command/action notes any h x x x deselect (nop/continue previous operation) l h h h no operation (nop/continue previous operation) idle l l h h active (select and activate row) lllhauto refresh 7 l l l l mode register set 7 row active l h l h read (select column and start read burst) 10 l h l l write (select column and start write burst) 10 l l h l precharge (deactivate row in bank or banks) 8 read (auto precharge disabled) l h l h read (select column and start new read burst) 10 l l h l precharge (truncate read burst, start precharge) 8 l h h l burst terminate 9 write (auto precharge disabled) l h l h read (select column and start read burst) 10, 11 l h l l write (select column and start new write burst) 10 l l h l precharge (truncate write burst, start precharge) 8, 11 29 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 note: (continued) row activating: starts with registration of an active command and ends when t rcd is met. once t rcd is met, the bank will be in the ?row active? state. read w/auto-precharge enabled: starts with registration of a read command with auto precharge enabled and ends when t rp has been met. once t rp is met, the bank will be in the idle state. write w/auto-precharge enabled: starts with registration of a write command with auto precharge enabled and ends when t rp has been met. once t rp is met, the bank will be in the idle state. 5. the following states must not be interrupted by any executable command; deselect or nop commands must be applied on each positive clock edge during these states. refreshing: starts with registration of an auto refresh command and ends when t rc is met. once t rfc is met, the ddr sdram will be in the ?all banks idle? state. accessing mode register: starts with registration of a mode register set command and ends when t mrd has been met. once t mtc is met, the ddr sdram will be in the ?all banks idle? state. precharging all: starts with registration of a precharge all command and ends when t rp is met. once t rp is met, all banks w ill be in the idle state. 6. all states and sequences not shown are illegal or reserved. 7. not bank-specific; requires that all banks are idle and no bursts are in progress. 8. may or may not be bank-specific; if multiple banks are to be precharged, each must be in a valid state for precharging. 9. not bank-specific; burst terminate affects the most recent read burst, regardless of bank. 10. reads or writes listed in the command/action column include reads or writes with auto precharge enabled and reads or writes with auto precharge disabled. 11. requires appropriate dm masking. 30 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s truth table 4 ? current state bank n - command to bank m (notes: 1-6; notes appear below and on next page) note: 1. this table applies when cke n-1 was high and cke n is high (see truth table 2) and after t xsr has been met (if the previous state was self refresh). 2. this table describes alternate bank operation, except where noted, i.e., the current state is for bank n and the commands shown are those allowed to be issued to bank m (assuming that bank m is in such a state that the given command is allowable). exceptions are covered in the notes below. 3. current state definitions: idle: the bank has been precharged, and t rp has been met. row active: a row in the bank has been activated, and t rcd has been met. no data bursts/accesses and no register accesses are in progress. read: a read burst has been initiated, with auto precharge disabled, and has not yet terminated or been terminated. write: a write burst has been initiated, with auto precharge disabled, and has not yet terminated or been terminated. current state /cs /ras /cas /we command/action notes any h x x x deselect (nop/continue previous operation) l h h h no operation (nop/continue previous operation) idle x x x x any command otherwise allowed to bank m row activating, active, or precharging l l h h active (select and activate row) l h l h read (select column and start read burst) 7 l h l l write (select column and start write burst) 7 l l h l precharge read (auto-precharge disabled) l l h h active (select and activate row) l h l h read (select column and start new read burst) 7 l l h l precharge write (auto- precharge disabled) l l h h active (select and activate row) l h l h read (select column and start read burst) 7, 8 l h l l write (select column and start new write burst) 7 l l h l precharge read (with auto-precharge) l l h h active (select and activate row) l h l h read (select column and start new read burst) 3a, 7 l h l l write (select column and start write burst) 3a, 7, 9 l l h l precharge write (with auto-precharge) l l h h active (select and activate row) l h l h read (select column and start read burst) 3a, 7 l h l l write (select column and start new write burst) 3a, 7 l l h l precharge 31 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 note: (continued) read with auto precharge enabled: see following text write with auto precharge enabled: see following text 3a. the read with auto precharge enabled or write with auto precharge enabled states can each be broken into two parts: the access period and the precharge period. for read with auto precharge, the precharge period is defined as if the same burst was executed with auto precharge disabled and then followed with the earliest possible precharge command that still accesses all of the data in the burst. for write with auto precharge, the precharge period begins when twr ends, with twr measured as if auto precharge was disabled. the access period starts with registration of the command and ends where the precharge period (or t rp) begins. during the precharge period of the read with auto precharge enabled or write with auto precharge enabled states, active, precharge, read and write commands to the other bank may be applied; during the access period, only active and precharge commands to the other bank may be applied. in either case, all other related limitations apply (e.g. contention between read data and write data must be avoided). 4. auto refresh and mode register set comman ds may only be issued when all banks are idle. 5. a burst terminate command cannot be issued to another bank; it applies to the bank represented by the current state only. 6. all states and sequences not shown are illegal or reserved. 7. reads or writes listed in the command/action column include reads or writes with auto precharge enabled and reads or writes with auto precharge disabled. 8. requires appropriate dm masking. 9. a write command may be applied after the completion of data output. 32 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s simplified state diagram preall = precharge all banks ckel = enter power down mrs = mode register set ckeh = exit power down emrs = extended mode register set act = active refs = enter self refresh write a = write with autoprecharge refsx = exit self refresh read a = read with autoprecharge refa = auto refresh pre = precharge self auto idle mrs emrs row precharge write write write read read power act read a read refs refsx refa ckel mrs ckeh ckeh ckel write power applied automatic sequence command sequence read a write a read pre pre pre pre refresh refresh active active power down precharge power down on a read a read a write a burst stop preall precharge preall 33 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 dc operating conditions & specifications dc operating conditions recommended operating conditions(voltage referenced to vss=0v, ta=0 to 70c) notes: 1. v ref is expected to be equal to 0.5*v ddq of the transmitting device, and to track variations in the dc level of the same. peak- to-peak noise on v ref may not exceed 2% of the dc value 2.v tt is not applied directly to the device. v tt is a system supply for signal termination resistors, is expected to be set equal to v ref , and must track variations in the dc level of v ref 3. v id is the magnitude of the difference between the input level on ck and the input level on ck . table 11. dc operating condition parameter symbol min max unit note supply voltage (for device with a nominal v dd of 2.5v) v dd 2.3 2.7 i/o supply voltage v ddq 2.3 2.7 v i/o reference voltage v ref 0.49*vddq 0.51*vddq v 1 i/o termination voltage(system) v tt v ref -0.04 v ref +0.04 v 2 input logic high voltage v ih (dc) v ref +0.15 v ddq +0.3 v input logic low voltage v il (dc) -0.3 v ref -0.15 v input voltage level, ck and ck inputs v in (dc) -0.3 v ddq +0.3 v input differential voltage, ck and ck inputs v id (dc) 0.3 v ddq +0.6 v 3 input leakage current i i -2 2 ua output leakage current i oz -5 5 ua output high current (v out = 1.95v) i oh -16.8 ma output low current (v out = 0.35v) i ol 16.8 ma 34 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s idd specifications and conditions (0c < ta < 70c, vddq=25v+ 0.2v, vdd=2.5 ia2v) conditions version symbol -6 -7 -7.5 -8 operating current - one bank active-precharge; trc=trcmin;tck=100mhz for ddr200, 133mhz for ddr266a & ddr266b, 166mhz for ddr333b; dq,dm and dqs inputs changing twice per clock cycle; address and control inputs changing once per clock cycle idd0 115 100 95 85 operating current - one bank operation; one bank open, bl=4 idd1 165 150 150 135 percharge power-down standby current; all banks idle; power - down mode; cke = 35 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 ac operating conditions & timming specification ac operating conditions note: 1.vih(max) = 4.2v. the overshoot voltage duration is < 3ns at vdd. 2. vil(min) = -1.5v. the undershoot voltage duration is < 3ns at vss. 3. vid is the magnitude of the difference between the input level on ck and the input on ck . 4. the value of v ix is expected to equal 0.5*v ddq of the transmitting device and must track variations in the dc level of the same. electrical characteristics and ac timing for pc333/pc266/pc200 -absolute specifications (notes: 1-5, 14-17) (0c < t a < 70c; v dd q = +2.5v 0.2v, +2.5v 0.2v) parameter/condition symbol min max unit note input high (logic 1) voltage, dq, dqs and dm signals vih(ac) vref + 0.31 v 1 input low (logic 0) voltage, dq, dqs and dm signals. vil(ac) vref - 0.31 v 2 input differential voltage, ck and ck inputs vid(ac) 0.62 vddq+0.6 v 3 input crossing point voltage, ck and ck inputs vix(ac) 0.5*vddq-0.2 0.5*vddq+0.2 v 4 ac characteristics -6 -7 -75 -8 parameter sym- bol min max min max min max min max units notes access window of dqs from ck/ck t ac -0.7 0.7 -0.75 0.75 -0.75 0.75 -0.8 0.8 ns ck high-level width t ch 0.45 0.55 0.45 0.55 0.45 0.55 0.45 0.55 t ck 30 ck low-level width t cl 0.45 0.55 0.45 0.55 0.45 0.55 0.45 0.55 t ck 30 clock cycle time cl = 2.5 t ck (2.5) 6 12 7 12 7.5 12 8 12 ns 52 cl = 2 t ck (2) 7.5 12 7.5 12 10 12 10 12 ns 52 dq and dm input hold time relative to dqs t dh 0.45 0.5 0.5 0.6 ns 26,31 dq and dm input setup time relative to dqs t ds 0.45 0.5 0.5 0.6 ns 26,31 dq and dm input pulse width (for each in- put) t dipw 1.5 1.75 1.75 2 ns 31 access window of dqs from ck/ck t dqsck -0.6 0.6 -0.75 0.75 -0.75 0.75 -0.8 0.8 ns dqs input high pulse width t dqsh 0.35 0.35 0.35 0.35 t ck dqs input low pulse width t dqsl 0.35 0.35 0.35 0.35 t ck dqs-dq skew, dqs to last dq valid, per group, per access t dqsq 0.45 0.5 0.5 0.6 ns 25,26 write command to first dqs latching tran- sition t dqss 0.75 1.25 0.75 1.25 0.75 1.25 0.75 1.25 t ck dqs falling edge to ck rising - setup time t dss 0.2 0.2 0.2 0.2 t ck dqs falling edge from ck rising - hold time t dsh 0.2 0.2 0.2 0.2 t ck half clock period t hp t ch, t cl t ch, t cl t ch, t cl t ch, t cl ns 34 36 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s data-out high-impedance window from ck/ck t hz -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 -0.8 +0.8 ns 18 data-out low-impedance window from ck/ ck t lz -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 -0.8 +0.8 ns 18 address and control input hold time (fast slew rate) t ih f .75 .90 .90 1.1 ns 14 address and control input setup time (fast slew rate) t is f .75 .90 .90 1.1 ns 14 address and control input hold time (slow slew rate) t ih s 0.80 1 1 1.1 ns 14 address and control input setup time (slow slew rate) t is s 0.80 1 1 1.1 ns 14 load mode register command cycle time t mrd 2 2 2 2 t ck dq-dqs hold, dqs to first dq to go non- valid, per access t qh t hp - t qhs t hp - t qhs t hp - t qhs t hp - t qhs ns 25, 26 data hold skew factor t qhs 0.60 0.75 0.75 1 ns active to precharge command t ras 42 120,00 0 45 120,00 0 45 120,00 0 50 120,00 0 ns 35 active to read with auto precharge command t rap t ras(min) - (burst length * t ck/2) ns 46 active to active/auto refresh command period t rc 60 65 65 70 ns auto refresh command period t rfc 72 75 75 80 ns 50 active to read or write delay t rcd 18 20 20 20 ns precharge command period t rp 18 20 20 20 ns dqs read preamble t rpre 0.9 1.1 0.9 1.1 0.9 1.1 0.9 1.1 t ck 42 dqs read postamble t rpst 0.4 0.6 0.4 0.6 0.4 0.6 0.4 0.6 t ck active bank a to active bank b com- mand t rrd 12 15 15 15 ns dqs write preamble t wpre 0.25 0.25 0.25 0.25 t ck dqs write preamble setup time t wpres 0 0 0 0 ns 20, 21 dqs write postamble t wpst 0.4 0.6 0.4 0.6 0.4 0.6 0.4 0.6 t ck 19 write recovery time t wr 15 15 15 15 ns internal write to read command delay t wtr 1 1 1 1 t ck data valid output window na t qh - t dqsq t qh - t dqsq t qh - t dqsq t qh - t dqsq ns 25 average periodic refresh interval t refi 15.6 15.6 15.6 15.6 us terminating voltage delay to vdd t vtd 0 0 0 0 ns ac characteristics -6 -7 -75 -8 parameter sym- bol min max min max min max min max units notes 37 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 exit self refresh to non-read com- mand t xsnr 75 75 75 80 ns exit self refresh to read command t xsrd 200 200 200 200 t ck ac characteristics -6 -7 -75 -8 parameter sym- bol min max min max min max min max units notes 38 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s slew rate derating values (notes: 14; notes appear on pages 50-53) 0c t a +70c; v ddq = +2.5v 0.2v, v dd = +2.5v 0.2v) slew rate derating values (note: 31; notes appear on pages 50-53) (0c t a +70c; v ddq = +2.5v 0.2v, v dd = +2.5v 0.2v) notes: 1. all voltages referenced to vss. 2. tests for ac timing, idd, and electrical ac and dc characteristics may be conducted at nominal reference/supply voltage levels, but the related specifications and device operation are guaranteed for the full voltage range specified. 3. outputs measured with equivalent load: address / command speed slew rate t is t ih units notes -6, -7, -75 0.500v / ns 1 1 ns 14 -6, -7, -75 0.400v / ns 1.05 1 ns 14 -6, -7, -75 0.300v / ns 1.10 1 ns 14 -6, -7, -75 0.200v / ns 1.15 1 ns 14 -8 0.500v / ns 1.1 1.1 ns 14 -8 0.400v / ns 1.15 1.1 ns 14 -8 0.300v / ns 1.20 1.1 ns 14 -8 0.200v / ns 1.25 1.1 ns 14 date, dqs, dm speed slew rate t ds t dh units notes -7, -75 0.500v / ns 0.50 0.50 ns 31 -7, -75 0.400v / ns 0.55 0.55 ns 31 -7, -75 0.300v / ns 0.60 0.60 ns 31 -7, -75 0.200v / ns 0.65 0.65 ns 31 -8 0.500v / ns 0.60 0.60 ns 31 -8 0.400v / ns 0.65 0.65 ns 31 -8 0.300v / ns 0.70 0.70 ns 31 -8 0.200v / ns 0.75 0.75 ns 31 o utput ( v out ) v tt 50 ? referenc e point 30pf 39 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 notes: (continued) 4. ac timing and idd tests may use a vil-to-vih swing of up to 1.5v in the test environment, but input timing is still referenced to vref (or to the crossing point for ck/ck ), and parameter specifications are guaranteed for the specified ac input levels under normal use conditions. the minimum slew rate for the input signals used to test the device is 1v/ns in the range between vil(ac) and vih(ac). 5. the ac and dc input level specifications are as defined in the sstl_2 standard (i.e., the receiver will effectively switch as a result of the signal crossing the ac input level, and will remain in that state as long as the signal does not ring back above [below] the dc input low [high] level). 6. vref is expected to equal vddq/2 of the transmit-ting device and to track variations in the dc level of the same. peak-to-peak noise (non-common mode) on vref may not exceed 2 percent of the dc value. thus, from vddq/2, vref is allowed 25mv for dc error and an additional 25mv for ac noise. 7. vtt is not applied directly to the device. vtt is a system supply for signal termination resistors, is expected to be set equal to vref and must track variations in the dc level of vref. 8. vid is the magnitude of the difference between the input level on ck and the input level on ck . 9. the value of vix is expected to equal vddq/2 of the transmitting device and must track varia-tions in the dc level of the same. 10. idd is dependent on output loading and cycle rates. specified values are obtained with minimum cycle time at cl = 2 for -6, -7 and -8, cl = 2.5 for -75 with the outputs open. 11. enables on-chip refresh and address counters. 12. idd specifications are tested after the device is properly initialized, and is averaged at the defined cycle rate. 13. this parameter is sampled. vdd = +2.5v 0.2v, vddq = +2.5v 0.2v, vref = vss, f = 100 mhz, t a = 25c, vout(dc) = vddq/2, vout (peak to peak) = 0.2v. dm input is grouped with i/o pins, reflecting the fact that they are matched in loading. 14. command/address input slew rate = 0.5v/ns. for -6, -7 and -75 with slew rates 1v/ns and faster, t is and t ih are reduced to 900ps. if the slew rate is less than 0.5v/ns, timing must be derated: t is has an additional 50ps per each 100mv/ns reduction in slew rate from the 500mv/ns. t ih has 0ps added, that is, it remains constant. if the slew rate exceeds 4.5v/ns, functionality is uncertain. 15. the ck/ck input reference level (for timing referenced to ck/ck ) is the point at which ck and ck cross; the input reference level for signals other than ck/ck is vref. 16. inputs are not recognized as valid until vref stabilizes. exception: during the period before vref stabilizes, cke 0.3 x vddq is recognized as low. 17. the output timing reference level, as measured at the timing reference point indicated in note 3, is vtt. 18. t hz and t lz transitions occur in the same access time windows as valid data transitions. these parameters are not referenced to a specific voltage level, but specify when the device output is no longer driving (hz) or begins driving (lz). 19. the maximum limit for this parameter is not a device limit. the device will operate with a greater value for this parameter, but system performance (bus turnaround) will degrade accordingly. 20. this is not a device limit. the device will operate with a negative value, but system performance could be degraded due to bus turnaround. 21. it is recommended that dqs be valid (high or low) on or before the write command. the case shown (dqs going from high-z to logic low) applies when no writes were previously in progress on the bus. if a previous write was in progress, dqs could be high during this time, depending on t dqss. 22. min ( t rc or t rfc) for idd measurements is the smallest multiple of t ck that meets the minimum absolute value for the respective parameter. t ras (max) for idd measurements is the largest multiple of t ck that meets the maximum absolute value for t ras. 40 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s notes: (continued) 23. the refresh period 64ms. this equates to an average refresh rate of 15.625s. 24. the i/o capacitance per dqs and dq byte/group will not differ by more than this maximum amount for any given device. 25. the valid data window is derived by achieving other specifications - t hp ( t ck/2), t dqsq, and t qh ( t qh = t hp - t qhs). the data valid window derates directly porportional with the clock duty cycle and a practical data valid window can be derived. the clock is allowed a maximum duty cycle variation of 45/55. functionality is uncertain when operating beyond a 45/55 ratio. the data valid window derating curves are provided below for duty cycles rang- ing between 50/50 and 45/55. 26. referenced to each output group: x4 = dqs with dq0-dq3; x8 = dqs with dq0-dq7; x16 = ldqs with dq0- dq7; and udqs with dq8-dq15. 27. this limit is actually a nominal value and does not result in a fail value. cke is high during refresh command period ( t rfc [min]) else cke is low (i.e., during standby). 28. to maintain a valid level, the transitioning edge of the input must: a) sustain a constant slew rate from the current ac level through to the target ac level, vil(ac) or vih(ac). b) reach at least the target ac level. c) after the ac target level is reached, continue to maintain at least the target dc level, vil(dc) or vih(dc). 29. the input capacitance per pin group will not differ by more than this maximum amount for any given device.. 30. ck and ck input slew rate must be 1v/ns. 31. dq and dm input slew rates must not deviate from dqs by more than 10%. if the dq/dm/dqs slew rate is less than 0.5v/ns, timing must be derated: 50ps must be added to t ds and t dh for each 100mv/ns reduction in slew rate. if slew rate exceeds 4v/ns, functionality is uncertain. 32. vdd must not vary more than 4% if cke is not active while any bank is active. notes: (continued) 3.8 3.750 3.700 3.650 3.600 3.550 3.500 3.450 3.400 3.350 3.300 3.250 3.400 50/50 49.5/50.5 49/51 48.5/52.5 48/52 47.5/53.5 47/53 46.5/54.5 46/54 45.5/55.5 45/55 2.463 2.500 2.425 2.388 2.350 2.313 2.275 2.238 2.200 2.163 2.125 3.350 3.300 3.250 3.200 3.150 3.100 3.050 3.000 2.950 2.90 0 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 -7, -75 @tck = 10ns -8, @tck = 10ns -7, -75 @tck = 7.5ns -8, @tck = 8ns -7, @tck = 7ns ns 41 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 33. the clock is allowed up to 150ps of jitter. each timing parameter is allowed to vary by the same amount. 34. t hp min is the lesser of t cl minimum and t ch minimum actually applied to the device ck and ck/ inputs, collectively during bank active. 35. reads and writes with auto precharge are not allowed to be issued until t ras(min) can be satisfied prior to the internal precharge com-mand being issued. 36. applies to x16 only. first dqs (ldqs or udqs) to transition to last dq (dq0-dq15) to transition valid. initial jedec specifications suggested this to be same as t dqsq. 37. normal output drive curves: a) the full variation in driver pull-down current from minimum to maximum process, temperature and voltage will lie within the outer bounding lines of the v-i curve of figure a. b) the variation in driver pull-down current within nominal limits of voltage and temperature is expected, but no guaranteed, to lie within the inner bounding lines of the v-i curve of figure a. c) the full variation in driver pull-up current from minimum to maximum process, temperature and voltage will lie within the outer bounding lines of the v-i curve of figure b. d)the variation in driver pull-up current within nominal limits of voltage and temperature is expected, but not guaranteed, to lie within the inner bounding lines of the v-i curve of figure b. e) the full variation in the ratio of the maximum to minimum pull-up and pull-down current should be between .71 and 1.4, for device drain-to-source voltages from 0.1v to 1.0 volt, and at the same voltage and temperature. f) the full variation in the ratio of the nominal pull-up to pull-down current should be unity 10%, for device drain-to-source voltages from 0.1v to 1.0 volt. g) on the x4, the qfc# output only has the pull-down characteristics which apply. 38. reduced output drive curves: a) the full variation in driver pull-down current from minimum to maximum process, tem-perature and voltage will lie within the outer bounding lines of the v-i curve of figure c. b) the variation in driver pull-down current within nominal limits of voltage and temperature is expected, but not guaranteed, to lie within the inner bounding lines of the v-i curve of figure c. c) the full variation in driver pull-up current from minimum to maximum process, temperature and voltage will lie within the outer bounding lines of the v-i curve of figure d. d)the variation in driver pull-up current within nominal limits of voltage and temperature is expected, but not guaranteed, to lie within the inner bounding lines of the v-i curve of figure d. e) the full variation in the ratio of the maximum to minimum pull-up and pull-down current should be between .71 and 1.4, for device drain-to-source voltages from 0.1v to 1.0 v, and at the same voltage. f) the full variation in the ratio of the nominal pull-up to pull-down current should be unity 10%, for device drain-to-source voltages from 0.1v to 1.0 v. 39. the voltage levels used are derived from the referenced test load. in practice, the voltage levels obtained from a properly terminated bus will provide significantly different voltage values. 40. vih overshoot: vih(max) = vddq+1.5v for a pulse width 3ns and the pulse width can not be greater than 1/3 of the cycle rate. vil undershoot: vil(min) = -1.5v for a pulse width 3ns and the pulse width can not be greater than 1/3 of the cycle rate. 41. vdd and vddq must track each other. 42. note 42 is not used. notes: (continued) 42 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s 43. note 43 is not used. 44. during initialization, vddq, vtt, and vref must be equal to or less than vdd + 0.3v. alternatively, vtt may be 1.35v maximum during power up, even if vdd /vddq are 0 volts, provided a minimum of 42 ohms of series re- sistance is used between the vtt supply and the input pin. 45. note 45 is not used. 46. t rap t rcd. 47. note 47 is not used. 48. random addressing changing 50% of data changing at every transfer. 49. random addressing changing 100% of data changing at every transfer. 50. cke must be active (high) during the entire time a refresh command is executed. that is, from the time the auto refresh command is registered, cke must be active at each rising clock edge, until t ref later. 51. idd2n specifies the dq, dqs, and dm to be driven to a valid high or low logic level. idd2q is similar to idd2f except idd2q specifies the address and control inputs to remain stable. although idd2f, idd2n, and idd2q are similar, idd2f is ?worst case.? 52. whenever the operating frequency is altered, not including jitter, the dll is required to be reset. this is followed by 200 clock cycles. m a x i m u m nom inal h ig h nominal low nominal low nominal high minimum minimum maximum 80 70 60 50 40 30 20 10 0 .0 0.5 1.0 1.5 2.0 2.5 0.0 -120 -100 -80 -60 -40 -20 0 0.5 1.0 1.5 2.0 2 .5 0 43 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 ibis: i/v characteristics for input and output buffers normal strength driver 1. the nominal pulldown v-i curve for ddr sdram devices will be within the inner bounding lines of the v-i curve of figure a. 2. the full variation in driver pulldown current from minimum to maximum process, temperature and voltage will lie within the o uter bounding lines the of the v-i curve of figure a. 3. the nominal pullup v-i curve for ddr sdram devices will be within the inner bounding lines of the v-i curve of below figure b. 4. the full variation in driver pullup current from minimum to maximum process, temperature and voltage will lie within the out er bounding lines of the v-i curve of figure b. 5. the full variation in the ratio of the maximum to minimum pullup and pulldown current will not exceed 1.7, for device drain to source voltage from 0 to vddq/2 6. the full variation in the ratio of the nominal pullup to pulldown current should be unity 10%, for device drain to source v oltages from 0 to vddq/2 figure 25. i/v characteristics for input/output buffers:pull up(above) and pull down(below) pulldown current (ma) pullup current (ma) voltage (v) typical low typical high minimum maximum typical low typical high minimum maximum 0.1 6.0 6.8 4.6 9.6 -6.1 -7.6 -4.6 -10.0 minimum typical ? low typical ? high maximum 0 20 40 60 80 100 120 140 160 0.0 0.5 1.0 1.5 2.0 2.5 iout(ma) vout(v) maximum typical ? high minumum iout(ma) -220 -200 -180 -160 -140 -120 -100 -80 -60 -40 -20 0 0.0 0.5 1.0 1.5 2.0 2.5 typical ? low v ddq ? ? ? vout(v) 44 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s table 17. pull down and pull up current values temperature (tambient) typical 25c minimum 70c maximum 0c vdd/vddq typical 2.5v minimum 2.3v maximum 2.7v the above characteristics are specified under best, worst and normal process variation/conditions 0.2 12.2 13.5 9.2 18.2 -12.2 -14.5 -9.2 -20.0 0.3 18.1 20.1 13.8 26.0 -18.1 -21.2 -13.8 -29.8 0.4 24.1 26.6 18.4 33.9 -24.0 -27.7 -18.4 -38.8 0.5 29.8 33.0 23.0 41.8 -29.8 -34.1 -23.0 -46.8 0.6 34.6 39.1 27.7 49.4 -34.3 -40.5 -27.7 -54.4 0.7 39.4 44.2 32.2 56.8 -38.1 -46.9 -32.2 -61.8 0.8 43.7 49.8 36.8 63.2 -41.1 -53.1 -36.0 -69.5 0.9 47.5 55.2 39.6 69.9 -41.8 -59.4 -38.2 -77.3 1.0 51.3 60.3 42.6 76.3 -46.0 -65.5 -38.7 -85.2 1.1 54.1 65.2 44.8 82.5 -47.8 -71.6 -39.0 -93.0 1.2 56.2 69.9 46.2 88.3 -49.2 -77.6 -39.2 -100.6 1.3 57.9 74.2 47.1 93.8 -50.0 -83.6 -39.4 -108.1 1.4 59.3 78.4 47.4 99.1 -50.5 -89.7 -39.6 -115.5 1.5 60.1 82.3 47.7 103.8 -50.7 -95.5 -39.9 -123.0 1.6 60.5 85.9 48.0 108.4 -51.0 -101.3 -40.1 -130.4 1.7 61.0 89.1 48.4 112.1 -51.1 -107.1 -40.2 -136.7 1.8 61.5 92.2 48.9 115.9 -51.3 -112.4 -40.3 -144.2 1.9 62.0 95.3 49.1 119.6 -51.5 -118.7 -40.4 -150.5 2.0 62.5 97.2 49.4 123.3 -51.6 -124.0 -40.5 -156.9 2.1 62.9 99.1 49.6 126.5 -51.8 -129.3 -40.6 -163.2 2.2 63.3 100.9 49.8 129.5 -52.0 -134.6 -40.7 -169.6 2.3 63.8 101.9 49.9 132.4 -52.2 -139.9 -40.8 -176.0 2.4 64.1 102.8 50.0 135.0 -52.3 -145.2 -40.9 -181.3 2.5 64.6 103.8 50.2 137.3 -52.5 -150.5 -41.0 -187.6 2.6 64.8 104.6 50.4 139.2 -52.7 -155.3 -41.1 -192.9 2.7 65.0 105.4 50.5 140.8 -52.8 -160.1 -41.2 -198.2 45 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 half strength driver 1. the nominal pulldown v-i curve for ddr sdram devices will be within the inner bounding lines of the v-i curve of figure a. 2. the full variation in driver pulldown current from minimum to maximum process, temperature and voltage will lie within the o uter bounding lines the of the v-i curve of figure a. 3. thenominal pullup v-i curve for ddr sdram devices will be within the inner bounding lines of the v-i curve of below figure b . 4. the full variation in driver pullup current from minimum to maximum process, temperature and voltage will lie within the out er bounding lines of the v-i curve of figure b. 5. the full variation in the ratio of the maximum to minimum pullup and pulldown current will not exceed 1.7, for device drain to source voltage from 0 to vddq/2 6. the full variation in the ratio of the nominal pullup to pulldown current should be unity 10%, for device drain to source v oltages from 0 to vddq/2 figure 26. i/v characteristics for input/output buffers:pull up(above) and pull down(below) pulldown current (ma) pullup current (ma) voltage (v) typical low typical high minimum maximum typical low typical high minimum maximum 0.1 3.4 3.8 2.6 5.0 -3.5 -4.3 -2.6 -5.0 iout(ma) minimum typical ? low typical ? high maximum 0 10 20 30 40 50 60 70 80 90 0.0 1.0 2.0 iout(ma) vout(v) maximum typical ? high minumum iout(ma) -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0.0 0.5 1.0 1.5 2.0 2.5 typical ? low v ddq ? ? ? vout(v) 46 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s table 18. pull down and pull up current values temperature (tambient) typical 25c minimum 70c maximum 0c vdd/vddq typical 2.5v minimum 2.3v maximum 2.7v the above characteristics are specified under best, worst and normal process variation/conditions 0.2 6.9 7.6 5.2 9.9 -6.9 -8.2 -5.2 -9.9 0.3 10.3 11.4 7.8 14.6 -10.3 -12.0 -7.8 -14.6 0.4 13.6 15.1 10.4 19.2 -13.6 -15.7 -10.4 -19.2 0.5 16.9 18.7 13.0 23.6 -16.9 -19.3 -13.0 -23.6 0.6 19.6 22.1 15.7 28.0 -19.4 -22.9 -15.7 -28.0 0.7 22.3 25.0 18.2 32.2 -21.5 -26.5 -18.2 -32.2 0.8 24.7 28.2 20.8 35.8 -23.3 -30.1 -20.4 -35.8 0.9 26.9 31.3 22.4 39.5 -24.8 -33.6 -21.6 -39.5 1.0 29.0 34.1 24.1 43.2 -26.0 -37.1 -21.9 -43.2 1.1 30.6 36.9 25.4 46.7 -27.1 -40.3 -22.1 -46.7 1.2 31.8 39.5 26.2 50.0 -27.8 -43.1 -22.2 -50.0 1.3 32.8 42.0 26.6 53.1 -28.3 -45.8 -22.3 -53.1 1.4 33.5 44.4 26.8 56.1 -28.6 -48.4 -22.4 -56.1 1.5 34.0 46.6 27.0 58.7 -28.7 -50.7 -22.6 -58.7 1.6 34.3 48.6 27.2 61.4 -28.9 -52.9 -22.7 -61.4 1.7 34.5 50.5 27.4 63.5 -28.9 -55.0 -22.7 -63.5 1.8 34.8 52.2 27.7 65.6 -29.0 -56.8 -22.8 -65.6 1.9 35.1 53.9 27.8 67.7 -29.2 -58.7 -22.9 -67.7 2.0 35.4 55.0 28.0 69.8 -29.2 -60.0 -22.9 -69.8 2.1 35.6 56.1 28.1 71.6 -29.3 -61.2 -23.0 -71.6 2.2 35.8 57.1 28.2 73.3 -29.5 -62.4 -23.0 -73.3 2.3 36.1 57.7 28.3 74.9 -29.5 -63.1 -23.1 -74.9 2.4 36.3 58.2 28.3 76.4 -29.6 -63.8 -23.2 -76.4 2.5 36.5 58.7 28.4 77.7 -29.7 -64.4 -23.2 -77.7 2.6 36.7 59.2 28.5 78.8 -29.8 -65.1 -23.3 -78.8 2.7 36.8 59.6 28.6 79.7 -29.9 -65.8 -23.3 -79.7 pulldown current (ma) pullup current (ma) voltage (v) typical low typical high minimum maximum typical low typical high minimum maximum 47 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 figure 36 - data input (write) timing di n = data in for column n burst length = 4 in the case shown 3 subsequent elements of data in are applied in the programmed order following di n figure 37 - data output (read) timing 1. tdqsq max occurs when dqs is the earliest among dqs and dq signals to transition. 2. tdqsq min occurs when dqs is the latest among dqs and dq signals to transition. 3. tdqsq nom, shown for reference, occurs when dqs transitions in the center among dq signal transitions. don't care dq dm d qs di n t ds t dh t ds t dh t dsl t dsh t min dqsq t max dqsq dq d qs t min dqsq t max dqsq t nom dqsq burst length = 4 in the case shown t dv d qs, dq 48 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s figure 38 - initialize and mode register sets cke lvcmos low level dq ba0, ba1 200 cycles of clk** extended mode register set load mode register, reset dll (with a8 = h) load mode register (with a8 = l) t mrd t mrd t mrd t rp t rfc t rfc t is power-up: vdd and clk stable t = 200 s ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) high-z t ih ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) dm ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) dqs high-z ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) a0-a9, a11 ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) a10 all banks don't care ck /ck t ck t ch t cl vtt (system*) t vtd vref vdd vddq c ommand mrs nop pre emrs ar ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ar t is t ih ba0=h, ba1=l t is t ih t is t ih ba0=l, ba1=l t is t ih ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) code t is t ih code mrs ba0=l, ba1=l code code ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) pre all banks t is t ih ra ra act ba * = vtt is not applied directly to the device, however tvtd must be greater than or equal to zero to avoid device latch-up. ** = tmrd is required before any command can be applied, and 200 cycles of ck are required before a read command can be applied . the two auto refresh commands may be moved to follow the first mrs, but precede the second precharge all command. ( ) ( ) ( ) ( ) code code 49 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 figure 39 - power-down mode ck /ck c ommand valid* nop addr cke valid valid don't care no column accesses are allowed to be in progress at the time power-down is entered * = if this command is a precharge (or if the device is already in the idle state) then the power-down mode shown is precharge power down. if this command is an active (or if at least one row is already active) then the power-down mode shown is active power down. dq dm dqs valid t ck t ch t cl t is t is t ih t is t is t ih t ih t is enter power-down mode exit power-down mode ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) nop 50 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s figure 40 - auto refresh mode ck /ck c ommand nop valid valid nop nop pre a0-a8 cke ra ra a9, a11 a10 ba0, ba1 *bank(s) ba don't care * = "don't care", if a10 is high at this point; a10 must be high if more than one bank is active (i.e. must precharge all activ e banks) pre = precharge, act = active, ra = row address, ba = bank address, ar = autorefresh nop commands are shown for ease of illustration; other valid commands may be possible at these times dm, dq and dqs signals are all "don't care"/high-z for operations shown ar nop ar nop act nop one bank all banks t ck t ch t cl t is t is t ih t ih t is t ih ra ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) dq dm dqs ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) t rc t rp t rc 51 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 figure 41 - self refresh mode ck /ck c ommand nop ar addr cke valid don't care dq dm dqs valid nop t ck clock must be stable before exiting self refresh mode t rp* t ch t cl t is t is t ih t is t is t ih t ih t is enter self refresh mode exit self refresh mode ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) * = device must be in the "all banks idle" state prior to entering self refresh mode ** = txsnr is required before any non-read command can be applied, and txsrd (200 cycles of clk) are required before a read command can be applied. t xsnr/ txsrd** 52 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s figure 42 - read - without auto precharge ck /ck command nop nop pre read cke col n ra ra a10 ba0, ba1 bank x *bank x don't care do n = data out from column n burst length = 4 in the case shown 3 subsequent elements of data out are provided in the programmed order following do n dis ap = disable autoprecharge * = "don't care", if a10 is high at this point pre = precharge, act = active, ra = row address, ba = bank address nop commands are shown for ease of illustration; other commands may be valid at these times dq dm dqs c ase 1: t ac/tdqsck = min c ase 2: t ac/tdqsck = max dq dqs nop nop act nop nop nop valid valid valid dis ap one bank all banks t ck t ch t cl t is t is t ih t ih t is t is t ih t ih t ih t is t ih t rpre t qpre t rpre t rp t t ra cl = 2 t min hz t max hz t min lz t max lz t max lz t min ac t max t min t max ac bank x x4:a0-a9 x8:a0-a8 x16:a0-a7 x4:a11 x8:a9, a11 x16:a8, a9, a11 do n do n dqsck rpst t qpst /qfc (optional) dqsck rpst t qpre t qpst /qfc (optional) t min lz start ? autoprecharge 53 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 figure 43 - read - with auto precharge ck /ck command nop nop pre read cke col n ra ra a10 ba0, ba1 bank x *bank x don't care do n = data out from column n burst length = 4 in the case shown 3 subsequent elements of data out are provided in the programmed order following do n dis ap = disable autoprecharge * = "don't care", if a10 is high at this point pre = precharge, act = active, ra = row address, ba = bank address nop commands are shown for ease of illustration; other commands may be valid at these times dq dm dqs c ase 1: t ac/tdqsck = min c ase 2: t ac/tdqsck = max dq dqs nop nop act nop nop nop valid valid valid dis ap one bank all banks t ck t ch t cl t is t is t ih t ih t is t is t ih t ih t ih t is t ih t rpre t qpre t rpre t rp t t ra cl = 2 t min hz t max hz t min lz t max lz t max lz t min ac t max t min t max ac bank x x4:a0-a9 x8:a0-a8 x16:a0-a7 x4:a11 x8:a9, a11 x16:a8, a9, a11 do n do n dqsck rpst t qpst /qfc (optional) dqsck rpst t qpre t qpst /qfc (optional) t min lz 54 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s figure 44 - bank read access ck /ck command nop nop nop nop read act cke ra ra ra ra ra a10 ba0, ba1 bank x bank x nop nop nop pre dis ap one bank all banks t ck t ch t cl t is t is t ih t is t is t ih t ih t ih t is t ih ra do n = data out from column n burst length = 4 in the case shown 3 subsequent elements of data out are provided in the programmed order following do n dis ap = disable autoprecharge * = "don't care", if a10 is high at this point pre = precharge, act = active, ra = row address, ba = bank address nop commands are shown for ease of illustration; other commands may be valid at these times note that trcd > trcd min so that the same timing applies if autoprecharge is enabled (in which case tras would be limiting) t rcd t ras t rc *bank x bank x t rp cl = 2 col n act x4:a0-a9 x8:a0-a8 x16:a0-a7 x4:a11 x8:a9, a11 x16:a8, a9, a11 don't care dq dm dqs c ase 1: t ac/tdqsck = min c ase 2: t ac/tdqsck = max dq dqs t rpre t qpre t rpre t t t min hz t max hz t min lz t max lz t max lz t min lz t min ac t max t min t max ac do n do n dqsck rpst t qpst /qfc (optional) dqsck rpst t qpre t qpst /qfc (optional) 55 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 figure 45 - write - without auto precharge ck /ck command nop nop nop write cke col n ra ra a10 ba0, ba1 bank x *bank x ba don't care di n = data in for column n burst length = 4 in the case shown 3 subsequent elements of data in are applied in the programmed order following di n dis ap = disable autoprecharge * = "don't care", if a10 is high at this point pre = precharge, act = active, ra = row address, ba = bank address nop commands are shown for ease of illustration; other valid commands may be possible at these times nop nop pre nop valid act nop dis ap one bank all banks t ck t ch t cl t is t is t ih t ih t is t is t ih t ih t rp t ih t is t ih ra x4:a0-a9 x8:a0-a8 x16:a0-a7 x4:a11 x8:a9, a11 x16:a8, a9, a11 dq dm dqs di n t t dqss t t c ase 1: t dqss = min c ase 2: t dqss = max dq dm dqs di n t t wr t dqss t t t t wpst dqsh dqsl t wpres wpst dqsh dqsl wpre wpres t wpre t dss t dss t dsh t dsh t qoh max t qck /qfc (optional) t qck t qoh min /qfc (optional) 56 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s figure 46 - write - with auto precharge ck /ck command nop nop nop write cke col n ra ra a10 ba0, ba1 bank x ba don't care di n = data in for column n burst length = 4 in the case shown 3 subsequent elements of data in are applied in the programmed order following di n en ap = enable autoprecharge act = active, ra = row address, ba = bank address nop commands are shown for ease of illustration; other valid commands may be possible at these times nop nop nop nop valid valid act nop en ap t ck t ch t cl t is t is t ih t is t is t ih t ih t dal ra valid t ih x4:a0-a9 x8:a0-a8 x16:a0-a7 x4:a11 x8:a9, a11 x16:a8, a9, a11 dq dm dqs di n t t dqss t t c ase 1: t dqss = min c ase 2: t dqss = max dq dm dqs di n t t dqss t t t t wpst dqsh dqsl t wpres wpst dqsh dqsl wpre wpres t wpre t dss t dss t dsh t dsh t qoh max t qck /qfc (optional) t qck t qoh min /qfc (optional) 57 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 figure 47 - bank write access ck /ck command nop nop nop write act cke ra a10 ba0, ba1 bank x bank x don't care di n = data in for column n burst length = 4 in the case shown 3 subsequent elements of data in are applied in the programmed order following di n dis ap = disable autoprecharge * = "don't care", if a10 is high at this point pre = precharge, act = active, ra = row address nop commands are shown for ease of illustration; other valid commands may be possible at these times nop nop nop nop pre dis ap one bank all banks t ck t ch t cl t is t is t ih t is t is t ih t ih t rcd t ras t ih t is t ih ra x4:a0-a9 x8:a0-a8 x16:a0-a7 x4:a11 x8:a9, a11 x16:a8, a9, a11 col n *bank x ra t wr dq dm dqs di n t t dqss t t c ase 1: t dqss = min c ase 2: t dqss = max dq dm dqs di n t t dqss t t t t wpst dqsh dqsl t wpres wpst dqsh dqsl wpre wpres t wpre t dss t dss t dsh t dsh t qoh max t qck /qfc (optional) t qck t qoh min /qfc (optional) 58 v58c2128(804/404/164)s rev. 1.6 march 2002 mosel vitelic v58c2128(804/404/164)s package diagram 66-pin tsop-ii (400 mil) units : millimeters 0.30 0.08 1.00 0.10 11.76 0.20 0.65typ (0.71) 22.22 0.10 0.125 (0.80) 10.16 0.10 0~8 #1 #33 #66 #34 (1.50) (1.50) 0.65 0.08 1.20max (0.50) (0.50) (10.76) (10 ) (10 ) +0.075 -0.035 (0.80) 0.10 max 0.075 max [] 0.05 min (10 ) (10) ( r 0 . 1 5 ) 0.210 0.05 0.665 0.05 ( r0. 1 5) ( 4 ) ( r 0 . 2 5 ) ( r 0 .2 5 ) 0.45~0.75 0.25typ note 1. ( ) is reference 59 mosel vitelic v58c2128(804/404/164)s v58c2128(804/404/164)s rev. 1.6 march 2002 worldwide offices ? copyright , mosel vitelic corp. printed in u.s.a. the information in this document is subject to change without notice. mosel vitelic makes no commitment to update or keep cur- rent the information contained in this document. no part of this document may be copied or reproduced in any form or by any means without the prior written consent of mosel-vitelic. mosel vitelic subjects its products to normal quality contr ol sampling techniques which are intended to provide an assuranc e of high quality products suitable for usual commercial applic a- tions. mosel vitelic does not do testing appropriate to provid e 100% product quality assurance and does not assume any liab il- ity for consequential or incidental arising from any use of its pro d- ucts. if such products are to be used in applications in whic h personal injury might occur from failure, purchaser must do its own quality assurance testing appropriate to such applications . u.s. sales offices u .s.a. 3 910 north first street s an jose, ca 95134 p hone: 408-433-6000 fax: 408-433-0952 taiwan 7f, no. 102 min-chuan e. road, sec. 3 taipei phone: 886-2-2545-1213 fax: 886-2-2545-1209 no 19 li hsin road science based ind. park hsin chu, taiwan, r.o.c. phone: 886-3-579-5888 fax: 886-3-566-5888 singapore 10 anson road #23-13 international plaza singapore 079903 phone: 65-3231801 fax: 65-3237013 japan onze 1852 building 6f 2-14-6 shintomi, chuo-ku tokyo 104-0041 phone: 03-3537-1400 fax: 03-3537-1402 uk & ireland suite 50, grovewood business centre strathclyde business park bellshill, lanarkshire, scotland, ml4 3nq phone: 44-1698-748515 fax: 44-1698-748516 germany (continental europe & israel) benzstrasse 32 71083 herrenberg germany phone: +49 7032 2796-0 fax: +49 7032 2796 22 w est 3 910 north first street s an jose, ca 95134 p hone: 408-433-6000 fax: 408-433-0952 central / east 604 fieldwood circle richardson, tx 75081 phone: 214-352-3775 fax: 214-904-9029 |
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