View 50S116T_3323444.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m 512k 2 banks 16 bits sdram table of contents - 1. general descripti on .................................................................................................................. 3 2. features .......................................................................................................................................... 3 3. available pa rt number ............................................................................................................... 3 4. pin configuration ........................................................................................................................ 4 5. pin description .............................................................................................................................. 5 6. block diagram ............................................................................................................................... 6 7. functional descri ption ............................................................................................................ 7 power - up and initialization ................................................................................................................ 7 programming mode register ............................................................................................................ 7 bank activate command .................................................................................................................. 7 read and write access modes ........................................................................................................ 7 burst read command ...................................................................................................................... 8 burst write command ...................................................................................................................... 8 read interrupted by a read .............................................................................................................. 8 read interrupted by a write .............................................................................................................. 8 write interrupted by a write .............................................................................................................. 8 write interrupted by a read .............................................................................................................. 8 burst stop command ....................................................................................................................... 8 addressing sequence of sequential mode ....................................................................................... 9 addressi ng sequence of interleave mode ........................................................................................ 9 auto precharge command ............................................................................................................. 10 precharge command ...................................................................................................................... 10 self refresh command .................................................................................................................. 10 power - down mode .......................................................................................................................... 10 no operation command ................................................................................................................. 11 deselect command ........................................................................................................................ 11 clock suspend mode ...................................................................................................................... 11 8. table of operatin g modes ..................................................................................................... 12 9. electrical charac teristics .................................................................................................. 13 absolute maximum ratings ............................................................................................................ 13 recommended dc operating conditions ...................................................................................... 13 capacitance .................................................................................................................................... 13
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 2 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m dc characteristics .......................................................................................................................... 14 ac characteristics .......................................................................................................................... 15 10. timing waveforms .................................................................................................................... 17 command input timing .................................................................................................................. 17 read timing ................................................................................................................................... 18 control timing of input/output data ............................................................................................... 19 mode reqister set cycle ................................................................................................................ 20 11. operating timing ex ample .................................................................................................... 21 interleaved bank read (burst length = 4, cas latency = 3) ........................................................ 21 interleaved bank read (burst length = 4, cas latency = 3, auto precharge) ............................. 22 interleaved bank read (burst length = 8, cas latency = 3) ........................................................ 23 interleaved bank read (burst length = 8, cas latency = 3, auto precharge) ............................. 24 interleaved bank write (burst length = 8) ..................................................................................... 25 interleaved bank write (burst leng th = 8, auto precharge) .......................................................... 26 page mode read (burst length = 4, cas latency = 3) ................................................................. 27 page mode read/ write (burst length = 8, cas lat ency = 3) ....................................................... 28 auto precharge read (burst length = 4, cas latency = 3) .......................................................... 29 auto precharge write (burst length = 4) ....................................................................................... 30 auto refresh cycle ......................................................................................................................... 31 self refresh cycle .......................................................................................................................... 32 bust read and single write (burst lenght = 4, cas latency = 3) ................................................. 33 power - down mode .......................................................................................................................... 34 auto precharge timing (read cycle) ............................................................................................. 35 auto precharge timing ( write cycle) ............................................................................................. 36 timing chart of write - to - read cycle (in the case of burst length = 4) ......................................... 37 timing chart of burst stop cycle (burst stop command) ............................................................. 37 timing chart of burst stop cycle (prechare command) ................................................................ 38 cke/dq m input timing ( write cycle) ............................................................................................ 39 cke/dqm input timing (read cycle) ............................................................................................ 40 self refresh/power - down mode exit timing .................................................................................. 41 12. package dimensio ns ................................................................................................................ 42 50l - tsop (ii) 400 mill .................................................................................................................... 42
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 3 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m 1. general descripti on 50 s1 16 t is a high - speed synchronous dynamic random access memory (sdram), organized as 512k words 2 banks 16 bits. using pipelined architecture 50 s 11 6 t de li ve rs a da ta bandwidth of up to 400m bytes per second ( - 5). for different applications th e 50 s 11 6 t is sorted into the following speed grades : - 5, - 6, - 7. the - 5 parts can run up to 200 m h z / cl 3 . the - 6 parts can run up to 166 mhz/cl3. the - 7 parts can run up to 143 mhz/cl3. for handheld device application . accesses to the sdram are burst oriented. consecutive memory location in one page can be accessed at a burst length o f 1, 2, 4, 8 or full page when a bank and row is selected by an active command. column addresses are automatically generated by the sdram internal counter in burst operation. random column read is also possible by providing its address at each clock cycle. the multiple bank nature enables interleaving among internal banks to hide the precharging time. by having a programmable mode register, the system can change burst length, latency cycle, interleave or sequential burst to maximize its performance. 50S116T is ideal for main memory in high performance applications. 3. available part nu mber part number speed (cl = 3 ) self refresh current (m ax.) 50 s 11 6 t - 5 200 mhz 1 ma 50 s 11 6 t - 6 166 mhz 1 ma 50 s1 16 t - 7 143 mhz 1 ma cas latency: 2 and 3 bu rst length: 1, 2, 4, 8, and full page burst read, single write mode byte data controlled by udqm and ldqm auto precharge and controlled precharge 4k refresh cycles/64 ms interface: lvttl packaged in 50 - pin, 400 mil tsop ii 2. features 3.3v 0.3v power supply up to 200 mhz clock frequency 524,288 words x 2 banks x 16 bits organization
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 4 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m 4. pin configuration 46 47 48 49 50 42 43 44 45 38 39 40 41 v ss 1 2 3 4 5 dq0 6 7 8 9 10 11 12 13 cs nc 24 15 14 19 18 17 16 22 21 20 23 25 v cc dq1 v q ss dq2 dq3 v q cc dq4 dq5 v q ss dq6 dq7 v q cc we cas ras ldqm ba a1 a2 a3 a0 a10 v cc 26 27 28 36 37 32 33 34 35 29 30 31 dq15 dq14 v q ss dq13 dq12 v q cc dq11 dq10 v q ss dq9 dq8 v q cc udqm nc clk cke a9 a6 a5 a4 a7 a8 v ss
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 5 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m 5. pin description p in number pin name function description 20 - 24, 27 - 32 a0 - a10 address multiplexed pins for row and column address. row address: a0 - a10. column address: a0 - a7. 19 ba bank select select bank to activate during row address latch time, or bank to read/ write during column address latch time. 2, 3, 5, 6, 8, 9, 11, 12, 39, 40, 42, 43, 45, 46, 48, 49 dq0 - dq15 data input/ output multiplexed pins for data input and output. 18 cs chip select disable or enable the command decoder. whe n command decoder is disabled, new command is ignored and previous operation continues. 17 ras row address strobe command input. when sampled at the rising edge of the clock, ras , cas and we define the operation to be executed. 16 cas column address strobe referred to ras 15 we write enable referred to ras 36, 14 udqm/ ldqm input/output mask the output buffer is placed at hi - z (with latency of 2) when dqm is sampled high in read cycle. in write cycle, sampling dqm high will block the write operation with zero latency. 35 clk clock inputs system clock used to sample inputs on the rising edge of clock. 34 cke clock enable cke controls the clock activation and deactivation. w hen cke is low, power - down mode, suspend mode, or self refresh mode is entered. 1, 25 v cc power (+3.3v) power for input buffers and logic circuit inside dram. 26, 50 v ss ground ground for input buffers and logic circuit inside dram. 7, 13, 38, 44, v cc q power (+3.3v) for i/o buffer separated power from v cc , used for output buffers to improve noise immunity. 4, 10, 41, 47 v ss q ground for i/o buffer separated ground from v ss , used for output buffers to improve noise immunity. 33, 37 nc no connection no connection
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 6 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m 6. block diagram clk cke a10 clock buffer command decoder address buffer refresh counter column counter control signal generator mode register column decoder sense amplifier cell array bank #0 r o w d e c o d e r dq0 dq15 ldqm udqm dq buffer cs ras cas we data control circuit note: the cell array configuration is 2048 * 256 * 16 column decoder sense amplifier cell array bank #1 a0 a9 ba r o w d e c o d e r
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 7 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m 7. functional descri ption power - up and initialization the default power - up state of the mode register is unspecified. the fo llowing power - up and initialization sequence need to be followed to guarantee the device being preconditioned to each user specific needs during power - up, all v cc and v cc q pins must be ramp up simultaneously to the specified voltage when the input signals are held in the "nop" state. the power - up voltage must not exceed v cc +0.3v on any of the input pins or v cc supplies. after power - up, an initial pause of 200 m s is required followed by a precharge of all banks using the precharge command. to prevent data c ontention on the dq bus during power - up, it is required that the dqm and cke pins be held high during the initial pause period. once all banks have been precharged, the mode register set command must be issued to initialize the mode register. an additional eight auto refresh cycles (cbr) are also required before or after programming the mode register to ensure proper subsequent operation. programming mode register after initial power - up, the mode register set command must be issued for proper device operati on. all banks must be in a precharged state and cke must be high at least one cycle before the mode register set command can be issued. the mode register set command is activated by the low signals of ras , cas , cs and we at the positive edge of the clock. the address input data during this cycle defines the parameters to be set as shown in the mode register operation table. a new command may be issued following the mode regist er set command once a delay equal to t rsc has elapsed. please refer to the next page for mode register set cycle and operation table. bank activate command the bank activate command must be applied before any read or write operation can be executed. the op eration is similar to ras activate in edo dram. the delay from when the bank activate command is applied to when the first read or write operation can begin must not be less than the ras to cas delay time (t rcd ). once a bank has been ac tivated it must be precharged before another bank activate command can be issued to the same bank. the minimum time interval between successive bank activate commands to the same bank is determined by the ras cycle time of the device (t rc ). the minimum tim e interval between interleaved bank activate commands (bank a to bank b and vice versa) is the bank - to - bank delay time (t rrd ). the maximum time that each bank can be held active is specified as t ras (max.). read and write access modes after a bank has been activated, a read or write cycle can be followed. this is accomplished by setting ras high and cas low at the clock rising edge after minimum of t rcd delay. we pin voltage level defines whether the access cycle is a read operation ( we high), or a write operation ( we low). the address inputs determine the starting column address. reading or writing to a different row within an activated bank requires the b ank be precharged and a new bank activate command be issued. when more than one bank is activated, interleaved bank read or write operations are possible. by using the programmed burst length and alternating the access and precharge operations between mult iple banks, seamless data access operation among many different pages can be realized. read or write commands can also be issued to the same bank or between active banks on every clock cycle.
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 8 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m burst read command the burst read command is initiated by applyi ng logic low level to cs and cas while holding ras and we high at the rising edge of the clock. the address inputs determine the starting column address for the burst. the mo de register sets type of burst (sequential or interleave) and the burst length (1, 2, 4, 8, full page) during the mode register set up cycle. table 1 and 2 in the next page explain the address sequence of interleave mode and sequence mode. burst write comm and the burst write command is initiated by applying logic low level to cs , cas and we while holding ras high at the rising edge of the clock. the address inputs determine th e starting column address. data for the first burst write cycle must be applied on the dq pins on the same clock cycle that the write command is issued. the remaining data inputs must be supplied on each subsequent rising clock edge until the burst length is completed. data supplied to the dq pins after burst finishes will be ignored. read interrupted by a read a burst read may be interrupted by another read command. when the previous burst is interrupted, the remaining addresses are overridden by the new r ead address with the full burst length. the data from the first read command continues to appear on the outputs until the cas latency from the interrupting read command the is satisfied. read interrupted by a write to interrupt a burst read with a write co mmand, dqm may be needed to place the dqs (output drivers) in a high impedance state to avoid data contention on the dq bus. if a read command will issue data on the first and second clocks cycles of the write operation, dqm is needed to insure the dqs are tri - stated. after that point the write command will have control of the dq bus and dqm masking is no longer needed. write interrupted by a write a burst write may be interrupted before completion of the burst by another write command. when the previous bu rst is interrupted, the remaining addresses are overridden by the new address and data will be written into the device until the programmed burst length is satisfied. write interrupted by a read a read command will interrupt a burst write operation on the same clock cycle that the read command is activated. the dqs must be in the high impedance state at least one cycle before the new read data appears on the outputs to avoid data contention. when the read command is activated, any residual data from the bur st write cycle will be ignored. burst stop command a burst stop command may be used to terminate the existing burst operation but leave the bank open for future read or write commands to the same page of the active bank, if the burst length is full page. u se of the burst stop command during other burst length operations is illegal. the burst stop command is defined by having ras and cas high with cs and we low at the rising
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 9 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m ed ge of the clock. the data dqs go to a high impedance state after a delay, which is equal to the cas latency in a burst read cycle, interrupted by burst stop. if a burst stop command is issued during a full page burst write operation, th en any residual data from the burst write cycle will be ignored. addressing sequence of sequential mode a column access is performed by increasing the address from the column address, which is input to the device. the disturb address is varied by the burst length as shown in table 1 . table 1 address sequence of sequential mode data access address burst length data 0 n bl = 2 (disturb address is a0) data 1 n + 1 no address carry from a0 to a1 data 2 n + 2 bl = 4 (disturb addresses are a0 and a1) data 3 n + 3 no address carry from a1 to a2 data 4 n + 4 data 5 n + 5 bl = 8 (disturb addresses are a0, a1 and a2) data 6 n + 6 no address carry from a2 to a3 data 7 n + 7 addressing sequence of interleave mode a column access is started in the input co lumn address and is performed by inverting the address bit in the sequence shown in table 2. table 2 address sequence of interleave mode data access address bust length data 0 a8 a7 a6 a5 a4 a3 a2 a1 a0 bl = 2 data 1 a8 a7 a6 a5 a4 a3 a2 a1 a0 data 2 a8 a7 a6 a5 a4 a3 a2 a1 a0 bl = 4 data 3 a8 a7 a6 a5 a4 a3 a2 a1 a0 data 4 a8 a7 a6 a5 a4 a3 a2 a1 a0 bl = 8 data 5 a8 a7 a6 a5 a4 a3 a2 a1 a0 data 6 a8 a7 a6 a5 a4 a3 a2 a1 a0 data 7 a8 a7 a6 a5 a4 a3 a2 a1 a0
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 10 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m auto precharge command if a10 is set to high when the read or write command is issued, then the auto precharge function is entered. during auto precharge, a read command will execute as normal with the exception that the active bank will begin to precharge automatically before all burst read cycles have been completed. regardless of burst length, it will begin a certain number of clocks prior to the end of the scheduled burst cycle. the number of clocks is determined by cas latency. a read or write command with auto prech arge can not be interrupted before the entire burst operation is completed. therefore, use of a read, write, or precharge command is prohibited during a read or write cycle with auto precharge. once the precharge operation has started, the bank cannot be r eactivated until the precharge time (t rp ) has been satisfied. issue of auto precharge command is illegal if the burst is set to full page length. if a10 is high when a write command is issued, the write with auto precharge function is initiated. the sdram automatically enters the precharge operation one clock delay from the last burst write cycle. this delay is referred to as write t wr . the bank undergoing auto precharge can not be reactivated until t wr and t rp are satisfied. this is referred to as t dal , da ta - in to active delay (t dal = t wr + t rp ). when using the auto precharge command, the interval between the bank activate command and the beginning of the internal precharge operation must satisfy t ras (min). precharge command the precharge command is used to precharge or close a bank that has been activated. the precharge command is entered when cs , ras and we are low and cas is high at the rising edge of the clock. the precharg e command can be used to precharge each bank separately or all banks simultaneously. the address bits, a10, and ba, are used to define which bank(s) is to be precharged when the command is issued. after the precharge command is issued, the precharged bank must be reactivated before a new read or write access can be executed. the delay between the precharge command and the activate command must be greater than or equal to the precharge time (t rp ). self refresh command the self refresh command is defined by h aving cs , ras , cas and cke held low with we high at the rising edge of the clock. all banks must be idle prior to issuing the self refresh command. once the command is regist ered, cke must be held low to keep the device in self refresh mode. when the sdram has entered self refresh mode all of the external control signals, except cke, are disabled. the clock is internally disabled during self refresh operation to save power. th e device will exit self refresh operation after cke is returned high. any subsequent commands can be issued after t rc from the end of self refresh command. if, during normal operation, auto refresh cycles are issued in bursts (as opposed to being evenly di stributed), a burst of 4,096 auto refresh cycles should be completed just prior to entering and just after exiting the self refresh mode. power - down mode the power - down mode is initiated by holding cke low. all of the receiver circuits except cke are gated off to reduce the power. the power - down mode does not perform any refresh operations; therefore the device can not remain in power - down mode longer than the refresh period (t ref ) of the device.
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 1 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m the power - down mode is exited by bringing cke high. when cke goes high, a no operation command is required on the next rising clock edge, depending on t ck . the input buffers need to be enabled with cke held high for a period equal to t cks (min) + t ck (min). no operation command the no operation command should be used in cases when the sdram is in an idle or a wait state to prevent the sdram from registering any unwanted commands between operations. a no operation command is registered when cs is low with ras , cas , and we held high at the rising edge of the clock. a no operation command will not terminate a previous operation that is still executing, such as a burst read or write cycle. deselect command the deselect command performs the sam e function as a no operation command. deselect command occurs when cs is brought high, the ras , cas , and we signals become don't cares. clock suspend mode during normal acces s mode, cke must be held high enabling the clock. when cke is registered low while at least one of the banks is active, clock suspend mode is entered. the clock suspend mode deactivates the internal clock and suspends any clocked operation that was current ly being executed. there is a one - clock delay between the registration of cke low and the time at which the sdram operation suspends. while in clock suspend mode, the sdram ignores any new commands that are issued. the clock suspend mode is exited by bring ing cke high. there is a one - clock cycle delay from when cke returns high to when clock suspend mode is exited.
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 2 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m 8. table of operatin g modes fully synchronous operations are performed to latch the commands at the positive edges of clk. table 3 shows the t ruth table for the operation commands. table 3 truth table (note 1, 2) command device state cken - 1 cken dqm ba a10 a9 - 0 cs ras cas we bank active idle h x x v v v l l h h b ank precharge any h x x v l x l l h l precharge all any h x x x h x l l h l write active (3) h x x v l v l h l l write with auto precharge active (3) h x x v h v l h l l read active (3) h x x v l v l h l h read with auto precharge active (3) h x x v h v l h l h mode register set idle h x x v v v l l l l no operation any h x x x x x l h h h burst stop active (4) h x x x x x l h h l device deselect any h x x x x x h x x x auto refresh idle h h x x x x l l l h self refresh entry idle h l x x x x l l l h self refresh exit idle (s.r) l l h h x x x x x x x x h l x h x h x h clock suspend mode entry active h l x x x x x x x x power - down mode entry idle active (5) h h l l x x x x x x x x h l x h x h x h clock suspend mode exit active l h x x x x x x x x power - down mode exit any (power - down) l l h h x x x x x x x x h l x h x h x h data write/output enable active h x l x x x x x x x data write/output disable active h x h x x x x x x x notes: (1) v = valid, x = don't care, l = low level, h = high leve l (2) cken signal is input level when commands are provided. (3) these are state of bank designated by ba signals. (4) device state is full page burst operation. (5) power - down mode can not be entered in the burst cycle. when this command asserts in the burst cycle, device state is clock suspend mode.
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 3 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m 9. electrical charac teristics absolute maximum ratings parameter symbol rating unit note input, output voltage v in , v out - 0.3 - 4.6 v 1 power supply voltage v cc , v cc q - 0.3 - 4.6 v 1 operating temperatur e t opr 0 - 70 c 1 storage temperature t stg - 55 - 1 25 c 1 soldering temperature (10s) t solder 260 c 1 power dissipation p d 1 w 1 short circuit output current i out 50 ma 1 note: exposure to conditions beyond those listed under absolute maximum rating s may adversely affect the life and reliability of the device. recommended dc operating conditions (t a = 0 to 70 c) parameter sym. min. typ. max. unit note power supply voltage v cc 3.0 3.3 3.6 v 2 power supply voltage (for i/o buffer) v cc q 3.0 3.3 3.6 v 2 input high voltage v ih 2.0 - v cc +0.3 v 2 input low voltage v il - 0.3 - 0.8 v 2 note : v ih (max.) = v cc /v cc q +1.2v for pulse width < 5 ns v il (min.) = v ss /v ss q - 1.2v for pulse width < 5 ns capacitance (v cc = 3.3v, t a = 25 c, f = 1mhz) parameter sym. min. max. unit input capacitance (a0 to a10, ba, cs , ras , cas , we , udqm, ldqm, cke) c i - 5 pf input capacitance (clk) - 5 pf input/output capacitance (dq0 to dq15) c io - 7 pf note: these parameters are periodically sampled and not 100% tested
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 4 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m dc characteristics (v cc = 3.3v 0.3v, t a = 0 ~70 c) parameter sym. - 5 max. - 6 max. - 7 max. unit notes operating current t ck = min., t rc = min. active precharge command cycling w ithout burst operation 1 bank operation i cc1 70 60 50 3 cke = v ih i cc2 35 30 25 3 standby current t ck = min., cs = v ih v ih /l = v ih (min.) /v il (max.) bank: inactive state cke = v il (power - down mode) i cc2p 1 1 1 3 cke = v ih i cc2s 8 8 8 standby curren t clk = v il , cs = v ih v ih /l = v ih (min.) /v il (max.) bank: inactive state cke = v il (power - down mode) i cc2ps 1 1 1 ma cke = v ih i cc3 45 40 35 no operating current t ck = min., cs = v ih (min.) bank: active state (2 banks) cke = v il (power - down mode) i cc3p 3 3 3 burst operating current ( t ck = min.) read/ write command cycling i cc4 120 110 100 3, 4 auto refresh current ( t ck = min.) auto refresh command cyclin i cc 5 60 55 50 3 standrad i cc6 1 1 1 self refresh current (cke = 0.2v) self refresh mode parameter sym. min. max. unit notes lvttl outputt 2 h 2 level voltage (i out = - 2 ma) v oh 2.4 - v lvttl output 2 l 2 level voltage (i out = 2 ma) v ol - 0.4 v input leakage current (0v v in v cc , all other pins not under test = 0v) i i - 10 10 m a out put leakage current (output disable , 0v v out v cc q ) i o - 10 10 m a
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 5 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m ac characteristics (v cc = 3.3v 0.3v, v ss = 0v, t a = 0 to 70 c, notes: 5, 6, 7, 8) parameter sym. - 5 - 6 - 7 unit min. max. min. max. min. max. ref/active to ref/active command period t rc 54 60 65 ns active to precharge command period t ras 40 100000 42 100000 45 100000 active to read/ write command delay ti me t rcd 1 5 18 20 read/ write(a) to read/write(b)command period t ccd 1 1 1 cycle precharge to active(b) command period t rp 1 5 18 20 ns active(a) to active(b) command period t rpd 10 12 14 write recovery time cl* = 2 t wr 7 8 10 cl* = 3 5 6 7 clk cycle time cl* = 2 t ck 7 1000 8 1000 10 1000 cl* = 3 5 1000 6 1000 7 1000 clk high level width t ch 2 2 2 . 5 clk low level width t cl 2 2 2 . 5 access time from clk cl* = 2 t ac 5 .5 6 6 .5 cl* = 3 4.5 5 5 . 5 output data ho ld time t oh 1. 8 2 2.5 output data high impedance time t hz 1.5 5 2 6 2.5 7 output data low impedance time t lz 1 1 1 power - down mode entry time t sb 1 5 1 6 1 7 transition time of clk (rise and fall) t t 0.5 10 0.5 10 0.5 10 data - in - set - up time t ds 1.5 1.5 1.5 data - in hold time t dh 1 1 1 address set - up time t as 1.5 1.5 1.5 address hold time t ah 1 1 1 cke set - up time t cks 1.5 1.5 1.5 cke hold time t ckh 1 1 1 command set - up time t cms 1.5 1.5 1.5 command hold time t cmh 1 1 1 refresh time t ref 64 64 64 ms mode register set cycle time t rsc 10 12 14 ns
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 6 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m notes: 1. operation exceeds "absolute maximum rating" may cause permanent damage to the devices. 2. all voltages are referenced to v ss 3. these parameters depend on the cycle rate and listed values are measured at a cycle rate with the minimum values of t ck and t rc . 4. these parameters depend on the output loading conditions. specified values are obtained with output open. 5. power - up sequence is furt her described in the "functional description" section. 6. ac test conditions. parameter conditions output reference level 1.4v/1.4v output load see diagram below input signal levels 2.4v/0.4v transition time (rise and fall) of input signal 2 ns input ref erence level 1.4v 50 ohms 1.4 v z = 50 ohms output ac test load 30pf 7. transition times are measured between v ih and v il . 8. t hz defines the time at which the outputs achieve the open circuit condition and is not referenced to output level.
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 7 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m t ck clk a0-a10 ba v ih v il t cmh t cms t ch t cl t t t t t cks t ckh t ckh t cks t cks t ckh cs ras cas we cke t cms t cmh t cms t cmh t cms t cmh t cms t cmh t as t ah 10. timing waveforms command input timing
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 8 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m ti ming waveforms, continued read timing read cas latency t ac t lz t ac t oh t hz t oh burst length read command clk cs ras cas we a0-a10 ba dq valid data-out valid data-out
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 1 9 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m timing waveforms, continued control timing of input/output data t cmh t cms t cmh t cms t ds t dh t ds t dh t ds t dh t ds t dh valid data-out valid data-out valid data-out valid data-in valid data-in valid data-in valid data-in t ckh t cks t ckh t cks t ds t dh t ds t dh t dh t ds t ds t dh valid data-in valid data-in valid data-in valid data-in t cmh t cms t cmh t cms t oh t ac t oh t ac t oh t hz open t lz t ac t oh t ac t ckh t cks t ckh t cks t oh t ac t oh t ac t oh t ac t oh t ac valid data-out valid data-out valid data-out clk dqm dq0 -15 (word mask) (clock mask) clk cke dq0 -15 clk input data output data (output enable) (clock mask) dqm dq0 -15 cke clk dq0 -15
* all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 20 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m timing waveforms, continued mode reqister set cycle a0 a1 a2 a3 a4 a5 a6 burst length addressing mode cas latency (test mode) a8 reserved a0 a7 a0 a9 a0 write mode a10 ba "0" "0" a3 addressing mode a0 0 sequential a0 1 interleave a9 single write mode 0 burst read and burst write 1 burst read and single write a2 a1 a0 a0 0 0 0 a0 0 0 1 a0 0 1 0 a0 0 1 1 a0 1 0 0 a0 1 0 1 a0 1 1 0 a0 1 1 1 burst length a0 sequential a0 interleave 1 1 2 2 4 4 a0 8 8 reserved reserved a0 full page cas latency reserved a0 reserved 2 3 reserved a0 a6 a5 a4 a0 0 0 0 0 1 0 0 1 1 1 0 0 0 0 1 t rsc t cms t cmh t cms t cmh t cms t cmh t cms t cmh t as t ah clk cs ras cas we a0-a10 ba register set data next command a0 reserved "0" "0"
11. operating timing example interleaved ba nk read (burst length = 4, cas latency = 3) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 (clk = 100 mhz) clk dq cke dqm a0-a9 a10 ba we cas ras cs t rc t rc t rc t rc t ras t rp t ras t rp t rp t ras t ras t rcd t rcd t rcd t rcd t ac t ac t ac t ac t rrd t rrd t rrd t rrd active read active read active active active read read precharge precharge precharge raa rbb rac rbd rae raa caw rbb cbx rac cay rbd cbz rae aw0 aw1 aw2 aw3 bx0 bx1 bx2 bx3 cy0 cy1 cy2 cy3 bank #0 bank #1 * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 2 1 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued interleaved bank read (burst length = 4, cas latency = 3, auto precharge) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 (clk = 100 mhz) clk cke dqm a0-a9 a10 ba we cas ras cs t rc t rc t rc t ras t rp t ras t rp t ras t rp t ras t rcd t rcd t rcd t rcd t ac t ac t ac t ac t rrd t rrd t rrd t rrd active read active read active active active read read t rc raa rac rbd rae dq aw0 aw1 aw2 aw3 bx0 bx1 bx2 bx3 cy0 cy1 cy2 cy3 dz0 * ap is the internal precharge start timing bank #0 bank #1 ap* ap* ap* raa caw rbb cbx rac cay rbd rae cbz rbb * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 22 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued interleaved bank read (burs t length = 8, cas latency = 3) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 t rc t rc t rc t ras t rp t ras t rp t ras t rp t rcd t rcd t rcd t rrd t rrd raa raa cax rbb rbb cby rac rac caz ax0 ax1 ax2 ax3 ax4 ax5 ax6 by0 by1 by4 by5 by6 by7 cz0 (clk = 100 mhz) clk dq cke dqm a0-a9 a10 we cas ras cs ba active read precharge active read precharge active t ac t ac read precharge t ac bank #0 bank #1 50 s 11 6t sdr a m * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 23 of 4 2 rev 1. 0 a u g . 20 ,20 0 2
operating timing example, continued interleaved bank read (burst length = 8, cas latency = 3, auto precharge) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 t rc t rc t ras t rp t ras t ras t rp t rcd t rcd t rcd t rrd t rrd ax0 ax1 ax2 ax3 ax4 ax5 ax6 ax7 by0 by1 by4 by5 by6 cz0 raa raa cax rbb rbb cby (clk = 100 mhz) rac rac caz * ap is the internal precharge start timing active read active active read t cac t cac t cac clk dq cke dqm a0-a9 a10 ba we cas ras cs bank #0 bank #1 read ap* ap* * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 24 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued interleaved bank write (burst length = 8) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 t rc t ras t rp t ras t rp t rcd t rcd t rcd t rrd t rrd raa raa cax rbb rbb cby rac rac caz ax0 ax1 ax4 ax5 ax6 ax7 by0 by1 by2 by3 by4 by5 by6 by7 cz0 cz1 cz2 (clk = 100 mhz) write precharge active active write precharge active write clk dq cke dqm a0-a9 a10 we cas ras cs ba bank #0 bank #1 t ras * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 25 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued interleaved bank write (burst length = 8, auto precharge) bank #0 bank #1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 t rc t ras t rp t ras t rcd t rcd t rcd t rrd t rrd raa raa cax rbb rbb cby rab rab ax0 ax1 ax4 ax5 ax6 ax7 by0 by1 by2 by3 by4 by5 by6 by7 cz0 cz1 cz2 caz (clk = 100 mhz) * ap is the internal precharge start timing clk dq cke dqm a0-a9 a10 we cas ras cs active write write active ap* active write ap* ba * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 26 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued page mode read (burst length = 4, cas latency = 3) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 t ccd t ccd t ccd t ras t rp t ras t rp t rcd t rcd t rrd raa raa cai rbb rbb cbx cay cam cbz a0 a1 a2 a3 bx0 bx1 ay0 ay1 ay2 am0 am1 am2 bz0 bz1 bz2 bz3 (clk = 100 mhz) * ap is the internal precharge start timing clk dq cke dqm a0-a9 a10 we cas ras cs ba active read active read read read read precharge t ac t ac t ac t ac t ac bank #0 bank #1 ap* * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 27 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
op erating timing example, continued page mode read/write (burst length = 8, cas latency = 3) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 t ras t rp t rcd t wr raa raa cax cay ax0 ax1 ax2 ax3 ax4 ax5 ay1 ay0 ay2 ay4 ay3 q q q q q q d dd d d (clk = 100 mhz) clk dq cke dqm a0-a9 a10 we cas ras cs ba active read write precharge t ac bank #0 bank #1 * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 28 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued auto precharge read (burst length = 4, cas latency = 3) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 (clk = 100 mhz) clk dq cke dqm a0-a9 a10 ba we cas ras cs t rc t rc t ras t rp t ras t rp t rcd t rcd t ac t ac active read ap* active read ap* raa rab raa caw rab cax aw0 aw1 aw2 aw3 bx0 bx1 bx2 bx3 * ap is the internal precharge start timing bank #0 bank #1 * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 29 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continue d auto precharge write (burst length = 4) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 (clk = 100 mhz) clk dq cke dqm a0-a9, a11 a10 bs1 we cs bs0 t rc t rc t ras t rp t ras t rp raa t rcd t rcd rab rac raa caw rab cax rac aw0 aw1 aw2 aw3 bx0 bx1 bx2 bx3 active active write ap* active write ap* * ap is the internal precharge start timing bank #0 bank #1 ras cas * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 30 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued auto refresh cycle 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 (clk = 100 mhz) all banks prechage auto refresh auto refresh (arbitrary cycle) t rc t rp t rc clk dq cke dqm a0-a9 a10 we cas ras cs ba * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 3 1 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued self refresh cycle 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 (clk = 100 mhz) clk dq cke dqm a0-a9 a10 ba we cas ras cs t cks t sb t cks t cks all banks precharge self refresh entry arbitrary cycle t rp self refresh cycle t rc no operation cycle * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 32 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, c ontinued bust read and single write (burst lenght = 4, cas latency = 3) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 clk cs ras cas we ba a10 a0-a9 dqm cke dq (clk = 100 mhz) t rcd rba rba cbv cbw cbx cby cbz av0 av1 av2 av3 aw0 ax0 ay0 az0 az1 az2 az3 q q q q d dd q q q q t ac t ac read read single write active bank #0 bank #1 * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 33 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued power - down mode 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 (clk = 100 mhz) raa caa raa cax raa raa ax0 ax1 ax2 ax3 t sb t cks t cks t cks t sb t cks active standby power down mode precharge standby power down mode active nop precharge nop active note: the powerdown mode is entered by asserting cke "low". all input/output buffers (except cke buffers) are turned off in the powerdown mode. when cke goes high, command input must be no operation at next clk rising edge. clk dq cke dqm a0-a9 a10 ba we cs read ras cas * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 34 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued auto precharge timing (read cycle) read ap 0 11 10 9 8 7 6 5 4 3 2 1 q0 q0 read ap act q1 read ap act q1 q2 ap act read act q0 q3 (1) cas latency=2 read act ap when the auto precharge command is asserted, the period from bank activate command to the start of internal precgarging must be at least t ras (min). represents the read with auto precharge command. represents the start of internal precharging. represents the bank activate command. note: t rp t rp t rp ( a ) burst length = 1 command ( b ) burst length = 2 command ( c ) burst length = 4 command ( d ) burst length = 8 command dq dq dq dq q0 q1 q2 q3 q4 q5 q6 q7 t rp q0 read ap act q0 read ap act q1 q0 read ap act q1 q2 q3 read ap act q0 q1 q2 q3 q4 q5 q6 q7 (2) cas latency=3 t rp t rp t rp t rp ( a ) burst length = 1 command ( b ) burst length = 2 command ( c ) burst length = 4 command ( d ) burst length = 8 command dq dq dq dq * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 35 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
ope rating timing example, continued auto precharge timing (write cycle) 0 1110987654321 act ap ap ap write act ap d0 d0 d0 ap act d1 ap act d1 d2 d3 ap act write write write d0 d0 d1 d2 d3 d4 d5 d6 d7 ap act d1 d0 act d1 d2 d3 act d0 d1 d2 d3 d4 d5 d6 d7 write write write write d0 (1) cas latency = 2 (2) cas latency = 3 write act ap when the auto precharge command is asserted, the period from bank activate command to the start of internal precgarging must be at least tras(min). represents the write with auto precharge command. represents the start of internal precharging. represents the bank activate command. note: t rp t wr t rp t wr t rp t wr t rp t wr t rp t wr t rp t wr t rp t wr t rp t wr ( a ) burst length = 1 command ( b ) burst length = 2 command ( c ) burst length = 4 command ( d ) burst length = 8 command dq dq dq dq ( a ) burst length = 1 command ( b ) burst length = 2 command ( c ) burst length = 4 command ( d ) burst length = 8 command dq dq dq dq * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 36 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued timing chart of write - to - read cycle (in the case of burst length = 4) 0 1110987654321 q0 read q1 q2 q3 read write write d0 d1 dq dq ( a ) command ( b ) command dqm dqm (2) cas latency = 3 q0 q1 q2 q3 d0 read write read write q0 q1 q2 q3 q0 q1 q2 q3 ( a ) command dq dq dqm ( b ) command dqm (1) cas latency = 2 d0 d0 d1 timing chart of burst stop cycle (burst s top command) read bst 0 1110987654321 dq dq q0 q1 q2 q3 q0 q1 q2 q3 read bst ( a ) cas latency =2 command ( b ) cas latency = 3 command (3) read cycle q4 q4 dq d0 d1 d2 d3 write bst command (2) write cycle d4 note: represents the burst stop command bst * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 37 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued timing chart of burst stop cycle (prechare command) (in the case of burst length = 8) note: represents the precharge command prcg read prcg 0 1110987654321 q0 q1 q2 q3 q0 q1 q2 q3 read prcg q4 q4 ( a ) cas latency = 2 ( b ) cas latency = 3 dq dq (1) read cycle (2) write cycle commad commad write prcg d0 d1 d2 d3 d0 d1 d2 d3 write prcg d4 d4 ( b ) cas latency = 3 dq ( a ) cas latency = 2 dqm dqm dq t wr t wr commad commad * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 38 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued cke/dqm input timing (write cycle) 7 6 5432 1 cke mask ( 1 ) d1 d6 d5 d3 d2 clk cycle no. external internal cke dqm dq 7 6 5432 1 ( 2 ) d1 d6 d5 d3 d2 76 5432 1 ( 3 ) d1 d6 d5 d4 d3 d2 clk cycle no. external cke dqm dq dqm mask dqm mask cke mask cke mask internal clk clk cycle no. external internal cke dqm dq clk clk * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 39 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued cke/dqm input timing (read cycle) 7 6 5 4 3 2 1 ( 1 ) q1 q6 q4 q3 q2 clk cycle no. external internal cke dqm dq open open 7 6 5 4 3 2 1 q1 q6 q3 q2 clk cycle no. external internal cke dqm dq open ( 2 ) 7 6 5 4 3 2 1 q1 q6 q3 q2 clk cycle no. external internal cke dqm dq q5 q4 ( 3 ) q4 clk clk clk * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 40 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
operating timing example, continued self refresh/power - down mode exit timing asynchronous control input buffer turn on time ( power down mode exit time ) is specified by t cks (min) + t ck (min) command nop clk cke command a ) t ck < t cks (min)+t ck (min) input buffer enable command clk cke command b) t ck >= t cks (min) + t ck (min) input buffer enable note ) command nop all input buffer(include clk buffer) are turned off in the power down mode and self refresh mode represents the no-operation command represents one command t ck t ck t cks (min) +t ck (min) t cks (min) +t ck (min) * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 4 1 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m
12. package dimensio ns 50l - ts op (ii) 400 mill seating plane d a2 a1 a e b zd 1 25 50 26 e h e l c l1 q zd 0.88 0.031 0.035 0.002 0.012 max. min. nom. a2 b a a1 0.30 0.90 1.00 0.05 1.10 0.45 1.20 0.15 sym. dimension (mm) max. min. nom. e 0.80 0.031 0.016 l 0.40 0.50 0.60 0.020 0.024 0.395 e 10.03 10.16 10.29 0.400 0.405 0.820 d 20.9520.82 21.08 0.825 0.830 0.039 0.043 0.018 0.047 0.006 dimension (inch) 0.10 0.004 l1 0.80 0.031 0.004 c 0.200.10 0.008 0.15 0.006 0.455 11.76 11.56 11.96 0.463 0.471 h e y q 0.10 0 o 10 o 0 o 10 o 0.004 controlling dimension: millimeters y * all specs and applications shown above subject to change without prior notice. 1f - 5 no.66 sec.2 nan - kan rd ., luchu , taoyuan, taiwan, r.o.c email: server@ceramate.com.tw tel:886 - 3 - 3214525 http: ww w .ceramate.com.tw fax:886 - 3 - 3521052 page 42 of 4 2 rev 1. 0 a u g . 20 ,20 0 2 50 s 11 6t sdr a m

▲Up To Search▲

Price & Availability of 50S116T

	To Download 50S116T Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .