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1 ams73cag01808ra high performance 1gbit ddr3 sdram 8 banks x 16mbit x 8 ams73cag01808ra rev.1.0 december 2010 - h7 - i9 ddr3-1066 ddr3-1333 clock cycle time ( t ck6, cwl=5 ) 2.5 ns 2.5 ns clock cycle time ( t ck7, cwl=6 ) 1.875 ns 1.875 ns clock cycle time ( t ck8, cwl=6 ) 1.875 ns 1.875 ns clock cycle time ( t ck9, cwl=7 ) - 1.5 ns clock cycle time ( t ck10, cwl=7 ) - 1.5 ns system frequency (f ck max ) 533 mhz 667 mhz specifications - density : 1g bits - organization : 16m words x 8 bits x 8 banks - package : - 78-ball fbga - lead-free (rohs compliant) and halogen-free - power supply : vdd, vddq = 1.5v 0.075v - data rate : 1333mbps/1066mbps (max.) - 1kb page size - row address: a0 to a13 - column address: a0 to a9 - eight internal banks for concurrent operation - interface : sstl_15 - burst lengths (bl) : 8 and 4 with burst chop (bc) - burst type (bt) : - sequential (8, 4 with bc) - interleave (8, 4 with bc) - cas latency (cl) : 5, 6, 7, 8, 9, 10, 11 - cas write latency (cwl) : 5, 6, 7, 8 - precharge : auto precharge option for each burst ac- cess - driver strength : rzq/7, rzq/6 (rzq = 240 ) - refresh : auto-refresh, self-refresh - refresh cycles : - average refresh period 7.8 s at 0c tc +85c 3.9 s at +85c < tc +95c - operating case temperature range - tc = 0c to +95c features - double-data-rate architecture; two data transfers per clock cycle - the high-speed data transfer is realized by the 8 bits prefetch pipelined architecture - bi-directional differential data strobe (dqs and dqs ) is transmitted/received with data for capturing data at the receiver - dqs is edge-aligned with da ta for reads; center- aligned with data for writes - differential clock inputs (ck and ck ) - dll aligns dq and dqs tran sitions with ck transitions - commands entered on each positive ck edge; data and data mask referenced to both edges of dqs - data mask (dm) for write data - posted cas by programmable additive latency for bet- ter command and data bus efficiency - on-die termination (odt) for better signal quality - synchronous odt - dynamic odt - asynchronous odt - multi purpose register (mpr) for pre-defined pattern read out - zq calibration for dq drive and odt - programmable partial arra y self-refresh (pasr) - reset pin for power-up sequence and reset function - srt range : normal/extended - programmable output driver impedance control device usage chart operating temperature range package outline speed power temperature mark 78-ball fbga - h7 - i9 std. l 0c tc 95c ? ???? blank -40c tc 95c ? ???? i
2 ams73cag01808ra rev. 1.0 december 2010 1 2 345 6 78910 111213141516171819 ams 73 c a g0180 8 r a j i 9 organization & refresh 256mx4, 8k : g0140 64mx16, 8k : g0116 128mx8, 8k : g0180 512mx4, 8k : g0240 128mx16, 8k : g0216 temperature 256mx8, 8k : g0280 blank: 0 - 95 : type i : -40 - 95 : 73 : ddr3 cmos h : -40 - 105 : e : -40 - 125 : speed voltage banks h7 : 533mhz @cl7-7-7 a : 1.5 v 8 : 8 banks i/o h8 : 533mhz @cl8-8-8 r: sstl_15 rev code i8 : 667mhz @cl8-8-8 i9 : 667mhz @cl9-9-9 special feature l : low power grade u : ultra low power grade package green package description jfbga *green: rohs-compliant and halogen-free part number information 1gb ddr3 sdram addressing configuration 128mb x 8 # of bank 8 bank address ba0 ~ ba2 auto precharge a10/ap row address a0 ~ a13 column address a0 ~ a9 bc switch on the fly a12/bc page size 1 kb
3 ams73cag01808ra rev. 1.0 december 2010 pin configurations 78-ball fbga (x8 configuration) 123456789 a v ss v dd nc nu/tdqs v ss v dd a b v ss v ssq dq0 dm/tdqs v ssq v ddq b c v ddq dq2 dqs dq1 dq3 v ssq c d v ssq dq6 dqs v dd v ss v ssq d e v refdq v ddq dq4 dq7 dq5 v ddq e f nc v ss ras ck v ss nc f g odt v dd cas ck v dd cke g h nc cs we a10/ap zq nc h j v ss ba0 ba2 nc v refca v ss j k v dd a3 a0 a12/bc ba1 v dd k l v ss a5 a2 a1 a4 v ss l m v dd a7 a9 a11 a6 v dd m n v ss reset a13 nc a8 v ss n ball locations (x8) populated ball ball not populated top view (see the balls through the package) 1234 89 567 a b c d e f g h j k l n m
4 ams73cag01808ra rev. 1.0 december 2010 signal pin description pin type function ck, ck input clock: ck and ck are differential clock inputs. all addre ss and control input signals are sampled on the crossing of the positive edge of ck and negative edge of ck . output (read) data is referenced to the crossings of ck and ck cke input clock enable: cke high activates, and cke low deactivat es, internal clock si gnals and device input buffers and output drivers. taking cke low provides precharge power-down and self refresh oper- ation (all banks idle), or active power-down (row active in any bank). cke is asynchronous for self refresh exit. after v refca has become stable during the power on and initialization sequence, it must be maintained during all operations (including self-refresh). cke must be maintained high throughout read and write accesses. input buffers, excluding ck, ck , odt and cke are disabled during power- down. input buffers, excluding cke, are disabled during self -refresh. cs input chip select: all commands are masked when cs is registered high. cs provides for external rank selection on systems with multiple ranks. cs is considered part of the command code. odt input on die termination: odt (registered high) enables termination resistance internal to the ddr3 sdram. when enabled, odt is onl y applied to each dq, dqs, dqs and dm/tdqs, nu/tdqs . the odt pin will be ignored if the mode regist er (mr1) is pro-grammed to disable odt. ras , cas , we input command inputs: ras , cas and we (along with cs ) define the command being entered. dm input input data mask: dm is an input mask signal for write data. input data is masked when dm is sampled high coinci-dent with that input data during a wr ite access. dm is sampled on both edges of dqs. ba0 - ba2 input bank address inputs: ba0 - ba2 define to which bank an active, read, write or precharge command is being applied. bank address also determines which mode register is to be accessed during a mrs cycle. a0 - a13 input address inputs: provided the row address for active commands and the column address for read/ write commands to select one location out of the memory array in the respective bank. (a10/ap and a12/bc have additional functions, s ee below)the address inputs also provide the op-code during mode register set commands. a10 / ap input autoprecharge: a10 is sampled during read/write commands to determine whether autoprecharge should be per-formed to the accessed bank after t he read/write operation. (high:autoprecharge; low: no autoprecharge)a10 is sampled during a precharge command to determine whether the pre- charge applies to one bank (a10 low) or all banks (a10 high). if only one bank is to be precharged, the bank is selected by bank addresses. a12 / bc input burst chop: a12 is sampled during read and write commands to determine if burst chop(on-the-fly) will be per-formed. (high : no burst chop, low : burst chopped). see command truth table for details. reset input active low asynchronous reset: reset is active when reset is low, and inactive when reset is high. reset must be high during normal operation. reset is a cmos rail to rail signal with dc high and low at 80% and 20% of vdd, i.e. 1.20v for dc high and 0.30v for dc low. dq0 - dq7 input/ output data input/ output: bi-directional data bus. dqs, dqs input/ output data strobe: output with read data, input with write data. edge-aligned with read data, centered in write data. the data strobe dqs is paired with differential signal dqs to provide differential pair sig- naling to the system during reads and writes. ddr3 sdram supports differential data strobe only and does not support single-ended.
5 ams73cag01808ra rev. 1.0 december 2010 tdqs, tdqs output termination data strobe: when enabled via mode register a11= 1 in mr1, dram will enable the same termination resistance function on tdqs/tdqs that is applied to dqs/dqs . when disabled via mode register a11=0 in mr1, dm/tdqs wi ll provide the data mask function and tdqs is not used. nc no connect: no internal el ectrical connection is present. vddq supply dq power supply: 1.5v +/- 0.075v vssq supply dq ground vdd supply power supply: 1.5v +/- 0.075v vss supply ground vrefdq supply reference voltage for dq vrefca supply reference voltage for ca zq supply reference pin for zq calibration note : input only pins ( ba0-ba2, a0-a13, ras , cas , we , cs , cke, odt and reset ) do not supply termination. pin type function
6 ams73cag01808ra rev. 1.0 december 2010 simplified state diagram srx = self refresh exit write = wr, wrs4, wrs8 write ap = wrap, wraps4, wraps8 zqcl = zq long calibration zqcs = zq short calibration bank active reading writing activating refreshing self refresh idle active power- down zq calibration from any state power applied reset procedure power on initialization mrs, mpr, write leveling precharge power- down writing reading automatic sequence command sequence precharging read read read read ap read ap read ap pre, prea pre, prea pre, prea write write cke l cke l cke l write write ap write ap write ap pde pde pdx pdx srx sre ref mrs act reset zqcl zqcl/zqcs act = activate mpr = multipurpose register mrs = mode register set pde = power-down entry pdx = power-down exit pre = precharge prea = precharge all read = rd, rds4, rds8 read ap = rdap, rdaps4, rdaps8 ref = refresh reset = start reset procedure sre = self refresh entry
7 ams73cag01808ra rev. 1.0 december 2010 mode register mr0 the mode register mr0 stores the data for controlling variou s operating modes of ddr3 sdram. it con- trols burst length, read burst type, cas latency, test mode, dll reset, wr and dll control for precharge power-down, which include various vendor specific options to make ddr3 sdram useful for various appli- cations. the mode register is written by asserting low on cs , ras , cas , we , ba0, ba1 and ba2, while controlling the states of address pi ns according to the table below. address field a7 mode 0normal 1test a3 read burst type 0 nibble sequential 1interleave a8 dll reset 0no 1yes mode register 0 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 0 tm cas latency rbt dll 0* 1 wr write recovery for autoprecharge a11 a10 a9 wr(cycles) 000 reserved 001 5 *2 010 6 *2 011 7 *2 100 8 *2 101 10 *2 110 12 *2 111 reserved a 13 0 bl a1 a0 bl 0 0 8 (fixed) 0 1 4 or 8(on the fly) 1 0 4 (fixed) 11 reserved *1 : ba2 and a13 are reserved for future use and must be programmed to 0 during mrs. *2 : wr(write recovery for autoprecharge)min in clock cycles is calculated by dividing twr(in ns) by tck(in ns) and rounding up to the next integer: wrmin[cycles] = roundup(twr[ns]/tck[ns]). the wr value in the mode register must be programmed to be equal or larger than wrmin. the programmed wr value is used with trp to determine tdal . ba 2 0* 1 ba1 ba0 mrs mode 00 mr0 01 mr1 10 mr2 11 mr3 a 12 ppd a12 dll control for precharge pd 0 slow exit (dll off) 1 fast exit (dll on) cas latency a6 a5 a4 a2 latency 0000 reserved 0010 5 0100 6 0110 7 1000 8 1010 9 1100 10 1110 11(optional for ddr3-1600) cl
8 ams73cag01808ra rev. 1.0 december 2010 mode register mr1 the mode register mr1 stores the data for enabling or disabling the dll, output driver strength, rtt_nom impedance, additive latency, write leveling enable, tdqs enable and qoff. the mode register 1 is wri tten by asserting low on cs , ras , cas , we , high on ba0, low on ba1 and ba2, while controlling the states of address pins according to the table below. mode register 1 address field 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 0 al 0* 1 0 * 1 a 13 1 rtt_nom a0 dll enable 0 enable 1 disable * 1 : ba2, a8, a10 and a13 are reserved for future use (rfu) and must be programmed to 0 during mrs. ba 2 0* 1 a 12 note : rzq = 240 ohms a5 a1 output driver impedance control 00 rzq/6 01 rzq/7 10 rzq/tbd 11 rzq/tbd d.i.c dll note : rzq = 240 ohms * 3: in write leveling mode (mr1[bit7] = 1) with mr1[bit12] = 1, all rtt_nom settings are allowed; in write leveling mode (mr1[bit7] = 1) with mr1[bit12] = 0, only rtt_nom settings of rzq/2, rzq/4 and rzq/6 are allowed. * 4: if rtt_nom is used during writes, only the values rzq/2,rzq/4 and rzq/6 are allowed. a9 a6 a2 rtt_nom *3 000 odt disabled 001 rzq/4 010 rzq/2 011 rzq/6 100 rzq/12* 4 101 rzq/8* 4 1 1 0 reserved 1 1 1 reserved a7 write leveling enable 0 disabled 1 enabled a4 a3 additive latency 0 0 0 (al disabled) 01 cl-1 10 cl-2 11 reserved *2: outputs disabled - dqs, dqss, dqss. a12 qoff *2 0 output buffer enabled 1 output buffer disabled *2 qoff level tdqs 0 * 1 rtt_nom d.i.c a11 tdqs enable 0disabled 1 enabled rtt_nom ba1 ba0 mrs mode 00 mr0 01 mr1 10 mr2 11 mr3
9 ams73cag01808ra rev. 1.0 december 2010 mode register mr2 the mode register mr2 stores th e data for controlling refresh relat ed features, rtt_wr impedance and cas write latency (cwl). the mode regist er 2 is written by asserting low on cs , ras , cas , we , high on ba1, low on ba0 and ba2, while controlling the states of address pins according to the table below. mode register 2 address field 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 1 a 13 0* 1 ba 2 0* 1 a 12 pasr* 2 a2 a1 a0 partial array self refresh (optional) 000full array 0 0 1 halfarray (ba[2:0]=000,001,010, &011) 0 1 0 quarter array (ba[2:0]=000, & 001) 0 1 1 1/8th array (ba[2:0] = 000) 1 0 0 3/4 array (ba[2:0] = 010,011,100,101,110, & 111) 1 0 1 halfarray (ba[2:0] = 100, 101, 110, &111) 1 1 0 quarter array (ba[2:0]=110, &111) 1 1 1 1/8th array (ba[2:0]=111) * 1 : ba2, a8, a11 ~ a13 are rfu and must be programmed to 0 during mrs. * 2 : the rtt_wr value can be applied during writes even when rtt_nom is disabled. during write leveling, dynamic odt is not available. srt a5 a4 a3 cas write latency (cwl) 000 5 (tck(avg) 2.5ns) 0 0 1 6 (2.5ns > tck(avg) 1.875ns) 010 7 (1.875ns > tck(avg) 1.5ns) 011 8 (1.5ns > tck(avg) 1.25ns) 1 0 0 reserved 1 0 1 reserved 1 1 0 reserved 1 1 1 reserved a7 self-refresh temperature range (srt) 0 normal operating temperature range 1 extend temperature self-refresh (optional) 0* 1 rtt_wr a10 a9 rtt_wr *2 00 dynamic odt off (write does not affect rtt value) 01 rzq/4 10 rzq/2 1 1 reserved ba1 ba0 mrs mode 00 mr0 01 mr1 10 mr2 11 mr3 0 cwl asr a6 auto self-refresh (asr) 0 1 asr enable (optional) manual sr reference (srt)
10 ams73cag01808ra rev. 1.0 december 2010 mode register mr3 the mode register mr3 controls mult i purpose registers (mpr). the mode register 3 is written by assert- ing low on cs , ras , cas , we , high on ba1 and ba0, and low on ba2 while controlling the states of address pins according to the table below. mode register 3 address field 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 1 a 13 1 0* 1 ba 2 0* 1 a 12 mpr address a1 a0 mpr location 00 predefined pattern* 2 01 10 11 mpr operation a2 mpr 0 normal operation* 3 1 dataflow from mpr mpr loc mpr * 1 : ba2, a3 - a13 are reserved for future use (rfu) and must be programmed to 0 during mrs. * 2 : the predefined pattern will be used for read synchronization. * 3 : when mpr control is set for normal operation, mr3 a[2] = 0, mr3 a[1:0] will be ignored ba1 ba0 mrs mode 00 mr0 01 mr1 10 mr2 11 mr3 rfu rfu rfu
11 ams73cag01808ra rev. 1.0 december 2010 command truth table (a) note 1,2,3,4 apply to the entire command truth table (b) note 5 applies to all read/write commands. [ba=bank address, ra=row address, ca=column address, bc =burst chop, x=don?t care, v=valid] note : 1. all ddr3 sdram commands are defined by states of cs, ras, cas, we and cke at the rising edge of the clock. the msb of ba, ra , and ca are device density and configuration dependant 2. reset is low enable command which will be used only for asynchronous reset so must be maintained high during any function. 3. bank addresses (ba) determine which bank is to be operated upon. for (e)mrs ba selects an (extended) mode register 4. ?v? means ?h or l (but a defined logic level)? and ?x? means either ?defined or undefined (like floating) logic level? 5. burst reads or writes cannot be terminated or interrupted and fixed/on the fly bl will be defined by mrs 6. the power down mode does not perform any refresh operations. 7. the state of odt does not affect the states described in this table. the odt function is not available during self refresh. 8. self refresh exit is asynchronous. 9. v ref (both v refdq and v refca ) must be maintained during self refresh operation. 10. the no operation command should be used in cases when the ddr3 sdram is in an idle or a wait state. the purpose of the no o peration command (nop) is to prevent the ddr3 sdram from registering any unwanted commands between operations. a no operation command wi ll not terminate a previous operation that is still executing, such as a burst read or write cycle. 11. the deselect command performs the same function as a no operation command. 12. refer to the cke truth table for more detail with cke transition function abbreviation cke cs ras cas we ba0 - ba2 a13 - a15 a12 / bc a10 / ap a0 - a9,a11 notes previous cycle current cycle mode register set mrs h h l l l l ba op code refresh ref h h l l l h v v v v v self refresh entry sre h l l l l h v v v v v 7,9,12 self refresh exit srx l h hvvvxxxx x 7,8,9,12 lhhhv v v v v single bank precharge pre h h l l h l ba v v l v precharge all banks prea h h l l h l v v v h v bank activate act h h l l h h ba row address (ra) write (fixed bl8 or bl4) wr h h l h l l ba rfu v l ca write (bl4, on the fly) wrs4 h h l h l l ba rfu l l ca write (bl8, on the fly) wrs8 h h l h l l ba rfu h l ca write with auto precharge (fixed bl8 or bl4) wra h h l h l l ba rfu v h ca write with auto precharge (bl4, on the fly) wras4 h h l h l l ba rfu l h ca write with auto precharge (bl8, on the fly) wras8 h h l h l l ba rfu h h ca read (fixed bl8 or bl4) rd h h l h l h ba rfu v l ca read (bl4, on the fly) rds4 h h l h l h ba rfu l l ca read (bl8, on the fly) rds8 h h l h l h ba rfu h l ca read with auto precharge (fixed bl8 or bl4) rda h h l h l h ba rfu v h ca read with auto precharge (bl4, on the fly) rdas4 h h l h l h ba rfu l h ca read with auto precharge (bl8, on the fly) rdas8 h h l h l h ba rfu h h ca no operation nop h h l h h h v v v v v 10 device deselected des h h h x x x x x x x x 11 zq calibration long zqcl h h l h h l x x x h x zq calibration short zqcs h h l h h l x x x l x power down entry pde h l lhhhv v v v v 6,12 hvxxxxxx x power down exit pdx l h lhhhv v v v v 6,12 hxxxxxxx x
12 ams73cag01808ra rev. 1.0 december 2010 cke truth table (a) note 1~7 apply to the entire command truth table (b) cke low is allowed only if tmrd and tmod are satisfied notes: 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 defined as the state of the ddr3 sdram immediately prior to clock edge n 3. command (n) is the command registered at clock edge n, and action (n) is a result of command (n), odt is not included here 4. all states and sequences not shown are illegal or reserved unless explicitly described elsewhere in this document 5. the state of odt does not affect the states described in this table. the odt function is not available during self refresh 6. cke must be registered with the same value on tckemin consecutive positive clock edges. cke must remain at the valid input l evel the entire time it takes to achieve the tckemin clocks of registeration. thus, after any cke transition, cke may not transition from its valid lev el during the time period of tis + tckemin + tih. 7. deselect and nop are defined in the command truth table 8. on self refresh exit deselect or nop commands must be issued on every clock edge occurring during the txs period. read or od t commands may be issued only after txsdll is satisfied. 9. self refresh mode can only be entered from the all banks idle state. 10. must be a legal command as defined in the command truth table. 11. valid commands for power down entry and exit are nop and deselect only. 12. valid commands for self refresh exit are nop and deselect only. 13. self refresh can not be entered while read or write operations. see ?self-refresh operation? and ?power-d own modes? on detailed list of restrictions. 14. the power down does not perform any refresh operations. 15. ?x? means ?don?t care (including floating around v ref )? in self refresh and power down. it also applies to address pins 16. v ref (both v refdq and v refca ) must be maintained during self refresh operation. 17. if all banks are closed at the conclusion of the read, write or precharge command, then precharge power down is entered, ot herwise active powe r down is entered 18. ?idle state? means that all banks are closed(trp,tdal,etc. satisfied) and cke is high and all timings from previous operati ons are satisfied (tmrd,tmod,trfc,tzqinit,tzqoper,tzqcs,etc)as well as all srf exit and power down exit parameters are satisfied (txs,txp,txpdll, etc) current state 2 cke command (n) 3 ras , cas, we, cs action (n) 3 notes previous cycle 1 (n-1) current cycle 1 (n) power down l l x maintain power-down 14, 15 l h deselect or nop power down exit 11, 14 self refresh l l x maintain self refresh 15, 16 l h deselect or nop self refresh exit 8, 12, 16 bank(s) active h l deselect or nop active power down entry 11, 13, 14 reading h l deselect or nop power down entry 11, 13, 14, 17 writing h l deselect or nop power down entry 11, 13, 14, 17 precharging h l deselect or nop power down entry 11, 13, 14, 17 refreshing h l deselect or nop precharge power down entry 11 all banks idle h l deselect or nop precharge power down entry 11,13, 14, 18 h l refresh self refresh entry 9, 13, 18 for more details with all signals see ?command truth table,? on previous page 10 later section for a
13 ams73cag01808ra rev. 1.0 december 2010 absolute maximum dc ratings note : 1. stresses greater than those listed un der ?absolute maximum ratings? may cause permanent damage to the device. this is a stress rating only and functional operation of t he device at these or any other conditions above those indi- cated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. storage temperature is the case surface temperature on the center/top side of the dram. for the measurement conditions, please refer to jesd51-2 standard. 3. v dd and v ddq must be within 300mv of each other at all times;and v ref must be not greater than 0.6 x v ddq , when v dd and v ddq are less than 500mv; v ref may be equal to or less than 300mv. operating temperature condition note : 1. operating temper ature is the case surface temperature on the center/top side of the dram. 2. the normal temperature range specifies the temperatures where all dram specifications will be supported. during operation, the dram case temperature must be maintained between 0c to +85c under all operating conditions. 3. some applications require operation of the dram in the extended temperature range between +85c and +95c case temperature. full sp ecifications are guaranteed in this range, but the followi ng additional conditions apply: a) refresh commands must be doubled in frequency, t herefore reducing the refresh interval trefi to 3.9 s. (this double refresh requirement may not apply for some devices.) b) if self-refresh operation is requir ed in the extended temperat ure range, then it is mandatory to either use the manual self-refresh mode with extended temperature range capability (mr2 bit [a6, a7 ] = [0, 1]) or enable the optional auto self-refresh mode (mr2 bit [a6, a7] = [1, 0]). recommended dc operating conditions note : 1. under all conditions vddq must be less than or equal to vdd. 2. vddq tracks with vdd. ac parameters ar e measured with vdd and vddq tied together. symbol parameter r ating units notes v dd voltage on v dd pin relative to vss -0.4 v ~ 1.975 v v 1,3 v ddq voltage on v ddq pin relative to vss -0.4 v ~ 1.975 v v 1,3 v in , v out voltage on any pin relative to vss -0.4 v ~ 1.975 v v 1 t stg storage temperature -55 to +100 c 1,2 symbol parameter r ating units notes t c operating case temperature 0 to +95 c 1,2,3 symbol parameter rating units notes min. typ. max. v dd supply voltage 1.425 1.5 1.575 v 1,2 v ddq supply voltage for output 1.425 1.5 1.575 v 1,2
14 ams73cag01808ra rev. 1.0 december 2010 ac and dc input m easurement levels single-ended ac and dc input levels for command and address note : 1. for input only pins except /reset : v ref = v refca (dc). 2. see overshoot and undersh oot specifications section. 3. the ac peak noise on v ref may not allow v ref to deviate from v refca (dc) by more than 1% vdd (for reference : approx. 15 mv). 4. for reference : approx. vdd/2 15 mv. single-ended ac and dc input levels for dq and dm note : 1. for dq and dm : v ref = v refdq (dc). 2. see overshoot and undersh oot specifications section. 3. the ac peak noise on v ref may not allow v ref to deviate from v refdq (dc) by more than 1% vdd (for reference: approx. 15 mv). 4. for reference: approx. vdd/2 15 mv. symbol parameter min . max. units notes v ihca (dc100) dc input logic high v ref + 0.100 vdd v 1 v ilca (dc100) dc input logic low vss v ref - 0.100 v 1 v ihca (ac175) ac input logic high v ref + 0.175 - v 1,2 v ilca (ac175) ac input logic low - v ref - 0.175 v 1,2 v ihca (ac150) ac input logic high v ref + 0.150 - v 1,2 v ilca (ac150) ac input logic low - v ref - 0.150 v 1,2 v refca (dc) reference voltage for add, cmd inputs 0.49 * vdd 0.51 * vdd v 3,4 symbol parameter min . max. units notes v ihdq (dc100) dc input logic high v ref + 0.100 vdd v 1 v ildq (dc100) dc input logic low vss v ref - 0.100 v 1 v ihdq (ac175) ac input logic high v ref + 0.175 - v 1,2 v ildq (ac175) ac input logic low - v ref - 0.175 v 1,2 v ihdq (ac150) ac input logic high v ref + 0.150 - v 1,2 v ildq (ac150) ac input logic low - v ref - 0.150 v 1,2 v refdq (dc) reference voltage for dq, dm inputs 0.49 * vdd 0.51 * vdd v 3,4
15 ams73cag01808ra rev. 1.0 december 2010 vref tolerances the dc-tolerance limits and ac-noise limits for the reference voltages vr efca and vrefdq are illustrate in figure vref(dc) tolerance and vref ac-noise limit s. it shows a valid reference voltage vref(t) as a function of time. (vref stands fo r vrefca and vrefdq likewise). vref(dc) is the linear average of vref(t) over a very lo ng period of time (e.g. 1 sec). this average has to meet the min/max requirement in table of ?singl e-ended ac and dc input levels for command and address?. furthermore vref(t) may temporarily deviate from vref(dc) by no more than +/- 1% vdd. the voltage levels for setup and hold time measur ements vih(ac), vih(dc), vil(ac) and vil(dc) are dependent on vref. "vref" shall be understood as vref(dc), as defined in figure above, vref(dc) tolerance and vref ac- noise limits. this clarifies, that dc-variations of vref affect the absolute voltage a signal has to reach to achieve a valid high or low level and therefore the time to which setup and hold is measured. system timing and voltage budgets need to account for vref(dc) deviations fr om the optimum position within the data-eye of the input signals. this also clarifies that the dram set up/hold specification and derating va lues need to include time and volt- age associated with vref ac-noise. timing and voltage effects due to ac-noise on vref up to the speci- fied limit (+/- 1% of vdd) are included in dram timings and their associated deratings. vref(dc) tolerance and vref ac-noise limits voltage v dd v ss time
16 ams73cag01808ra rev. 1.0 december 2010 ac and dc logic input levels for differential signals differential signals definition differential swing requirement for clock (ck - ck ) and strobe (dqs - dqs ) differential ac and dc input levels note : 1. used to define a differential signal slew-rate. 2. for ck - ck use vih/vil(ac) of address/comma nd and vrefca; for strobes (dqs, dqs ) use vih/vil(ac) of dqs and vrefdq; if a reduced ac-high or ac-low level is used for a signal group, then the reduced level applies also here. 3. these values are not defined, howe ver they single-ended signals ck, ck , dqs, dqs need to be within the respec- tive limits (vih(dc) max, vil(dc)min) for single-ended signals as well as the limitations for overshoot and under- shoot. refer to "overshoot and undershoot specification". symbol parameter min . max. units notes vihdiff differential input high +0.2 note 3 v 1 vildiff differential in put low note 3 -0.2 v 1 vihdiff(ac) differential input high ac 2 x (vih(ac) - vref) note 3 v 2 vildiff(ac) differentia l input low ac note 3 2 x (vref - vil(ac)) v 2 definition of differential ac-swing and "time above ac level" tdvac 0.0 tdvac v ih .diff.min half cycle s q d - s q d . e . i ( e g a t l o v t u p n i l a i t n e r e f f i d k c - k c , ) time tdvac v ih .diff.ac.min v il .diff.max v il .diff.ac.max
17 ams73cag01808ra rev. 1.0 december 2010 allowed time before ringback (tdvac) for ck - ck and dqs - dqs single-ended requirements for differential signals each individual component of a di fferential signal (ck, dqs, ck , dqs ) has also to comply with certain requirements for single-ended signals. ck and ck have to approximately reach vseh min / vsel max [ approxim ately equal to the ac-levels ( vih(ac) / vil(ac) ) for address/command signals ] in every half-cycle. dqs, dqs have to reach vseh mi n / vsel max [ approximately the ac-l evels ( vih(ac) / vil(ac) ) for dq signals ] in every half-cycle proceeding and following a valid transition. note that the applicable ac-levels for address/comma nd and dq?s might be different per speed-bin etc. e.g. if vih150(ac) / vil150(ac) is used for address/command signals, th en these ac-levels apply also for the single-ended components of differential ck and ck . slew rate [v/ns] tdvac [ps] @ |vih/ldiff(ac)| = 350mv t dvac [ps] @ |vih/ldiff(ac)| = 300mv min. max. min. max. > 4.0 75 - 175 - 4.0 57 - 170 - 3.0 50 - 167 - 2.0 38 - 163 - 1.8 34 - 162 - 1.6 29 - 161 - 1.4 22 - 159 - 1.2 13 - 155 - 1.0 0 - 150 - < 1.0 0 - 150 -
18 ams73cag01808ra rev. 1.0 december 2010 note that while address/command and dq signal requirements are with respect to vref, the single-ended components of differential signals have a requirement with respect to vdd/2; th is is nominally the same. the transition of single-ended signals through the ac-levels is used to measure setup time. for single- ended components of differen tial signals the requirem ent to reach vsel max, vseh min has no bearing on timing, but adds a restriction on the common mode characteristics of these signals. single-ended levels for ck, dqs, ck , dqs note : 1. for ck, ck use vih/vil(ac) of address/co mmand; for strobes (dqs, dqs ) use vih/vil(ac) of dqs. 2. vih(ac)/vil(ac) for dqs is based on vrefdq; vih(ac)/vil(ac) for address/ command is based on vrefca; if a reduced ac-high or ac-low level is used for a si gnal group, then the reduced level applies also here. 3. these values are not defined, however the sing le-ended components of differential signals ck, ck , dqs, dqs need to be within the respective limits (vih (dc) max, vil(dc) min) for single-ended signals as well as the limitations for overshoot and undershoot. refer to "overshoot and undershoot specifications?. symbol parameter min . max. units notes vseh single-ended high-level for strobes (vdd/2) + 0.175 note 3 v 1,2 single-ended high-level for ck, ck (vdd/2) + 0.175 note 3 v 1,2 vsel single-ended low-level for strobes note 3 (vdd/2) - 0.175 v 1,2 single-ended low-level for ck, ck note 3 (vdd/2) - 0.175 v 1,2 single-ended requirement for differential signals vss or vssq vdd or vddq vsel max vseh min vseh vsel time vdd/2 or vddq/2 ck or dqs
19 ams73cag01808ra rev. 1.0 december 2010 to guarantee tight setup and hold times as well as outpu t skew parameters with respect to clock and strobe, each cross point voltage of differential input signals (ck, ck and dqs, dqs ) must meet the requirements in below table. the differential input cross point voltage vix is measured from the actual cross point of true and complement signal to the mid level between of vdd and vss. cross point voltage for differential input signals ( ck, dqs ) note :1. extended range for vix is only allowed for clock and if single-ended clock input signals ckand ck are mono- tonic, have a single-ended swing vsel / vseh of at leas t vdd/2 +/- 250 mv, and the differential slew rate of ck-ck is larger than 3 v/ ns. refer to the table of cross point voltage for differential input signals (ck, dqs) for vsel and vseh st andard values. differential input sl ew rate definition note : the differential signal (i.e. ck - ck and dqs - dqs ) must be linear between these thresholds. symbol parameter min. max. units notes vix differential input cross point voltage relative to vdd/2 for ck, ck -150 150 mv -175 175 mv 1 vix differential input cross point voltage relative to vdd/2 for dqs, dqs -150 150 mv description measured defined by from to differential input slew rate for rising edge ( ck-ck and dqs-dqs ) vildiff (max) vihdiff (min) vihdiff (min) - vildiff (max) delta trdiff differential input slew rate for falling edge ( ck-ck and dqs-dqs ) vihdiff (min) vildiff (max) vihdiff (min) - vildiff (max) delta tfdiff vix definition v dd ck , dqs v dd /2 ck, dqs v ss v ix v ix v ix differential input slew rate definition for dqs, dqs , and ck, ck v ihdiffmin 0 v ildiffmax delta trdiff delta tfdiff
20 ams73cag01808ra rev. 1.0 december 2010 idd specification ( vdd = 1.5v0.075v; vddq =1.5v0.075v ) conditions symbol - h7 - i9 unit operating one bank active-precharge current; cke: high; external clock: on; tck, nrc, nras, cl: see timing used table; bl: 8; al: 0; cs : high between act and pre; command, address: partially toggling; data io: floating; dm:stable at 0; bank activity: cycling with one bank active at a time; output buffer and rtt: enabled in mode registers; odt signal: stable at 0 idd0 85 95 ma operating one bank active-read-precharge current; cke: high; external clock: on; tck, nrc, nras, nrcd, cl: see timing used table; bl: 81; al: 0; cs : high between act, rd and pre; com- mand, address, data io: partially t oggling; dm:stable at 0; bank acti vity: cycling with one bank active at a time; output buffer and rtt: enabled in mode registers; odt signal: stable at 0 idd1 100 110 ma precharge power-down current slow exit; cke: low; external clock: on; tck, cl: see timing used table; bl: 8; al: 0; cs : stable at 1; command, address: stable at 0; data io: floating; dm: stable at 0; bank activity: all banks closed; output buff er and rtt: enabled in mo de registers; odt signal: stable at 0; pre-charge power down mode: slow exit idd2p0 13 14 ma precharge power-down current fast exit; cke: low; external clock: on; tck, cl: see timing used table; bl: 8; al: 0; cs : stable at 1; command, address: stable at 0; data io: floating; dm:stable at 0; bank activity: all banks closed; output buff er and rtt: enabled in mo de registers; odt signal: stable at 0; pre-charge power down mode: fast exit idd2p1 35 40 ma precharge standby current; cke: high; external clock: on; tck, cl: see timing used table; bl: 8; al: 0; cs : stable at 1; command, address: partially t oggling; data io: floating; dm:stable at 0; bank activity: all banks closed; output buffer and rtt: enabled in mode registers; odt signal: stable at 0 idd2n 55 60 ma precharge standby odt current; cke: high; external clock: on; tc k, cl: see timing used table; bl: 8; al: 0; cs : stable at 1; command, address: partially toggling; data io: floating; dm:stable at 0; bank activity: all banks cl osed; output buffer and rtt: enabled in mode registers; odt signal: tog- gling idd2nt 55 60 ma precharge quiet standby current; cke: high; external clock: on ; tck, cl: see timing used table; bl: 8; al: 0; cs : stable at 1; command, address: stable at 0; data io: floating; dm: stable at 0; bank activity: all banks closed; output buffer and rtt: enabled in mode registers; odt signal: stable at 0 idd2q 50 55 ma active power-down current; cke: low; external clock: on; tck, cl: see timing used table; bl: 8; al: 0; cs : stable at 1; command, address: stable at 0; data io: floating; dm: stable at 0; bank activity: all banks open; output buffer and rtt: en abled in mode registers; odt signal: stable at 0 idd3p 35 40 ma active standby current; cke: high; external clock: on; tck, cl: see timing used table; bl: 8; al: 0; cs : stable at 1; command, address: partially toggl ing; data io: floating; dm: stable at 0; bank activity: all banks open; output buffer and rtt: en abled in mode registers; odt signal: stable at 0 idd3n 60 65 ma operating burst read current; cke: high; external clock: on; tck, cl: see timing used table; bl: 8; al: 0; cs : high between rd; command, address: par-tially toggling; data io: seamless read data burst with different data between one burst and the nex t one; dm: stable at 0; bank activity: all banks open, rd commands cycling through banks: 0,0,1,1,2,2,...; output buffer and rtt: enabled in mode registers; odt signal: stable at 0 idd4r 160 200 ma operating burst write current; cke: high; external clock: on; tck, cl: see timing used table; bl: 8; al: 0; cs : high between wr; command, address: par-tially toggling; data io: seamless write data burst with different data between one burst and the nex t one; dm: stable at 0; bank activity: all banks open, wr commands cycling through banks: 0,0,1,1,2,2,...; output buffer and rtt: enabled in mode registers; odt signal: stable at high idd4w 170 210 ma
21 ams73cag01808ra rev. 1.0 december 2010 note : 1) burst length: bl8 fixed by mrs: set mr0 a[1,0]=00b 2) output buffer enable: set mr1 a[12] = 0b; set mr1 a[5,1] = 01b; rtt_nom enable: set mr1 a[9,6,2] = 011b; rtt_wr enable: set mr2 a[10,9] = 10b 3) precharge power down mode: set mr0 a12=0b for slow exit or mr0 a12=1b for fast exit 4) auto self-refresh (asr): set mr2 a6 = 0b to disable or 1b to enable feature 5) self-refresh temperature range (srt): set mr2 a7=0b for normal or 1b for extended temperature range 6) refer to dram supplier data sheet and/or dimm spd to determi ne if optional features or requirements are supported by ddr3 sd ram 7) read burst type : nibble sequential, set mr0 a[3]=0b timing used for idd and iddq measured - loop patterns burst refresh current; cke: high; external clock: on; tck, cl, nrfc: see timing used table; bl: 8; al: 0; cs : high between ref; command, address: partia lly toggling; data io: floating; dm:stable at 0; bank activity: ref command every nrfc; ou tput buffer and rtt: enabled in mode registers; odt signal: stable at 0 idd5b 260 270 ma self refresh current: normal temperature range; tcase: 0- 85c; auto self-refresh (asr): dis- abled; self-refresh temperature range (srt): no rmal; cke: low; external clock: off; ck and ck : low; cl: see timing used table; bl: 8; al: 0; cs , command, address, data io: floating; dm: sta- ble at 0; bank activity: self-refresh operation; output buffer and rtt: enabled in mode registers; odt signal: floating idd6 10 10 ma self refresh current: extended temperature range; tcase: 0- 95c; auto self-refresh (asr): disabled; self-refresh temperature range (srt): extended; cke: low; external clock: off; ck and ck : low; cl: see timing used table; bl: 8; al: 0; cs , command, address, data io: floating; dm: stable at 0; bank activity: extended temperature se lf-refresh operation; output buffer and rtt: en- abled in mode registers; odt signal: floating idd6et 18 18 ma operating bank interleave read current; cke: high; external clock: on; tck, nrc, nras, nrcd, nrrd, nfaw, cl: see timing used table; bl: 8; al: cl-1; cs: high between act and rda; com- mand, address: partially toggling; data io: read dat a bursts with different data between one burst and the next one; dm: stable at 0; bank activity: two ti mes interleaved cycling through banks (0, 1, ...7) with different addressing; output buffer and rtt: enabled in mode registers; odt signal: stable at 0 idd7 270 310 ma reset low current; reset: low; external clock: off; ck and ck: low; cke: floating; cs, command, address, data io: floating; odt signal : floating idd8 88 ma speed ddr3-1066 ddr3-1333 unit cl-nrcd-nrp 7-7-7 8-8-8 8-8-8 9-9-9 tckmin 1.875 1.5 ns cl 7889nck trcdmin 7889nck trcmin 27 28 33 34 nck trasmin 20 20 nck trpmin 7889nck tfaw 20 20 nck trrd 4 4 nck trfc - 1gb 59 74 nck conditions symbol - h7 - i9 unit
22 ams73cag01808ra rev. 1.0 december 2010 ddr3-1066 speed bins ddr3-1333 speed bins speed bin -h7 (ddr3-1066) unit notes cl-nrcd-nrp 7-7-7 parameter symbol min max internal read command to first data taa 13.125 20 ns 9 active to read or write delay time trcd 13.125 - ns 9 precharge command period trp 13.125 - ns 9 active to active/auto-refresh command time trc 50.625 - ns 9 active to precharge command period tras 37.5 9 * trefi ns 8 average clock cycle time cl = 6 cwl = 5 tck(avg) 2.5 3.3 ns 1,2,3,6 cwl = 6 tck(avg) reserved reserved ns 1,2,3,4 cl = 7 cwl = 5 tck(avg) reserved reserved ns 4 cwl = 6 tck(avg) 1.875 < 2.5 ns 1,2,3,4 cl = 8 cwl = 5 tck(avg) reserved reserved ns 4 cwl = 6 tck(avg) 1.875 < 2.5 ns 1,2,3 supported cl setting 6, 7, 8 nck supported cwl setting 5, 6 nck speed bin -i9 (ddr3-1333) unit notes cl-nrcd-nrp 9-9-9 parameter symbol min max internal read command to first data taa 13.125 20 ns 9 active to read or write delay time trcd 13.125 - ns 9 precharge command period trp 13.125 - ns 9 active to active/auto-refresh command time trc 49.125 - ns 9 active to precharge command period tras 36 9 * trefi ns 8 average clock cycle time cl = 6 cwl = 5 tck(avg) 2.5 3.3 ns 1,2,3,7 cwl = 6 tck(avg) reserved reserved ns 1,2,3,4,7 cwl = 7 tck(avg) reserved reserved ns 4 cl = 7 cwl = 5 tck(avg) reserved reserved ns 4 cwl = 6 tck(avg) 1.875 < 2.5 ns 1,2,3,4,7 cwl = 7 tck(avg) reserved reserved ns 1,2,3,4 cl = 8 cwl = 5 tck(avg) reserved reserved ns 4 cwl = 6 tck(avg) 1.875 < 2.5 ns 1,2,3,7 cwl = 7 tck(avg) reserved reserved ns 1,2,3,4 cl = 9 cwl = 5, 6 tck(avg) reserved reserved ns 4 cwl = 7 tck(avg) 1.5 < 1.875 ns 1,2,3,4 cl = 10 cwl = 5, 6 tck(avg) reserved reserved ns 4 cwl = 7 tck(avg) 1.5 < 1.875 ns 1,2,3 supported cl setting 6, 7, 8, 9, 10 nck supported cwl setting 5, 6, 7 nck
23 ams73cag01808ra rev. 1.0 december 2010 speed bin table notes note : 1. the cl setting and cwl setting result in tck(avg) min and tck(avg) max requirements. when making a selection of tck(avg), both need to be fulfilled: requirements from cl setting as well as requirements from cwl setting. 2. tck(avg) min limits: since cas latency is not purely analog - data and strobe output are synchronized by the dll - all possible intermediate frequencies may not be guarant eed. an application should use the next smaller jedec standard tck(avg) value (2.5, 1.875, 1.5, or 1.25 ns) when calculating cl [nck] = taa [ns] / tck(avg) [ns], rounding up to the next "supported cl". 3. tck(avg) max limits: calculate tck(avg) = taa max / cl selected and round the resulting tck(avg) down to the next valid speed bin (i.e. 3.3ns or 2.5ns or 1.875 ns or 1. 25 ns). this result is tck(avg) max corresponding to cl selected. 4. "reserved" settings are not allowed. user must program a different value. 5. "optional" settings allow certain devices in the industry to support this setting, however, it is not a mandatory feature. 6. any ddr3-1066 speed bin also supports functional opera tion at lower frequencies as shown in the table which are not subject to production tests but verified by design/characterization. 7. any ddr3-1333 speed bin also supports functional opera tion at lower frequencies as shown in the table which are not subject to production tests but verified by design/characterization. 8. trefi depends on operatin g case temperature (tc). 9. for devices supporting optional down binning to cl=7 and cl=9, taa/trcd/trp min must be 13.125 ns or lower. spd settings must be programmed to match. for exampl e, ddr3-1333(cl9) devices supporting down binning to ddr3-1066(cl7) should program 13.125 ns in spd bytes fo r taamin (byte 16), trcdmin (byte 18), and trpmin (byte 20). once trp (byte 20) is programmed to 13.125ns, trcmin (byte 21,23) also should be programmed accord- ingly. for example, 49.125ns (trasmin + trpmin=36ns+13.125ns) for ddr3-1333(cl9).
24 ams73cag01808ra rev. 1.0 december 2010 ac characteristics ( vdd = 1.5v0.075v; vddq =1.5v0.075v ) parameter symbol -h7 (ddr3-1066) -i9 (ddr3-1333) unit note min max min max average clock cycle time t ck (avg) see speed bins table ns minimum clock cycle time (dll-off mode) t ck (dll-off) 8- 8- ns 6 average ck high level width t ch (avg) 0.47 0.53 0.47 0.53 t ck (avg) average ck low level width t cl (avg) 0.47 0.53 0.47 0.53 t ck (avg) active bank a to active bank b command period t rrd 7.5 - 6 - ns 4-4-nck four activate window t faw 37.5 - 30 - ns address and control input hold time (vih/vil (dc100) levels) t ih (base) dc100 200 - 140 - ps 16 address and control input setup time (vih/vil (ac175) levels) t is (base) ac175 125 - 65 - ps 16 address and control input setup time (vih/vil (ac150) levels) t is (base) ac150 125+150 - 65+125 - ps 16,24 dq and dm input hold time (vih/vil (dc) levels) t dh (base) 100 - 65 - ps 17 dq and dm input setup time (vih/vil (ac) levels) t ds (base) 25 - 30 - ps 17 control and address input pulse width for each input t ipw 780 - 620 - ps 25 dq and dm input pulse width for each input t dipw 490 - 400 - ps 25 dq high impedance time t hz (dq) - 300 - 250 ps 13,14 dq low impedance time t lz (dq) -600 300 -500 250 ps 13,14 dqs, dqs high impedance time (rl + bl/2 reference) t hz (dqs) - 300 - 250 ps 13,14 dqs, dqs low impedance time (rl - 1 reference) t lz (dqs) -600 300 -500 250 ps 13,14 dqs, dqs to dq skew, per group, per access t dqsq - 150 - 125 ps 12,13 cas to cas command delay t ccd 4 - 4 - nck dq output hold time from dqs, dqs t qh 0.38 - 0.38 - t ck (avg) 12,13 dqs, dqs rising edge output access time from rising ck, ck t dqsck -300 300 -255 255 ps 12,13 dqs latching rising transitions to associated clock edges t dqss -0.25 0.25 -0.25 0.25 t ck (avg) dqs falling edge hold time from rising ck t dsh 0.2 - 0.2 - t ck (avg) 29 dqs falling edge setup time to rising ck t dss 0.2 - 0.2 - t ck (avg) 29 dqs input high pulse width t dqsh 0.45 0.55 0.45 0.55 t ck (avg) 27,28
25 ams73cag01808ra rev. 1.0 december 2010 dqs input low pulse width t dqsl 0.45 0.55 0.45 0.55 t ck (avg) 26,28 dqs output high time t qsh 0.38 - 0.40 - t ck (avg) 12,13 dqs output low time t qsl 0.38 - 0.40 - t ck (avg) 12,13 mode register set command cycle time t mrd 4- 4- nck mode register set command update delay t mod 15 - 15 - ns 12 - 12 - nck read preamble time t rpre 0.9 - 0.9 - t ck (avg) 13,19 read postamble time t rpst 0.3 - 0.3 - t ck (avg) 11,13 write preamble time t wpre 0.9 - 0.9 - t ck (avg) 1 write postamble time t wpst 0.3 - 0.3 - t ck (avg) 1 write recovery time t wr 15 - 15 - ns auto precharge write recovery + precharge time t dal (min) wr + roundup [trp / tck(avg)] nck multi-purpose register recovery time t mprr 1-1-nck 22 internal write to read command delay t wtr 7.5 - 7.5 - ns 18 4-4-nck 18 internal read to precharge command delay t rtp 7.5 - 7.5 - ns 4-4-nck minimum cke low width for self-refresh entry to exit timing t ckesr t cke (min) +1nck -t cke (min) +1nck - valid clock requirement after self- refresh entry or power-down entry t cksre 10 - 10 - ns 5-5-nck valid clock requirement before self- refresh exit or power-down exit t cksrx 10 - 10 - ns 5-5-nck exit self-refresh to commands not requiring a locked dll t xs t rfc (min) +10 - t rfc (min) +10 - ns 5-5-nck exit self-refresh to commands requiring a locked dll t xsdll t dllk (min) -t dllk (min) - nck auto-refresh to active/auto-refresh command time t rfc 110 - 110 - ns average periodic refresh interval 0c < tc < +85c t refi - 7.8 - 7.8 s average periodic refresh interval +85c < tc < +95c t refi - 3.9 - 3.9 s cke minimum high and low pulse width t cke 5.625 - 5.625 - ns 3 - 3 - nck exit reset from cke high to a valid command t xpr t rfc (min) +10 - t rfc (min) +10 - ns 5-5-nck dll locking time t dllk 512 - 512 - nck parameter symbol -h7 (ddr3-1066) -i9 (ddr3-1333) unit note min max min max
26 ams73cag01808ra rev. 1.0 december 2010 power-down entry to exit time t pd t cke (min) 9*t refi t cke (min) 9*t refi 15 exit precharge power-down with dll frozen to commands requiring a locked dll t xpdll 24 - 24 - ns 2 10 - 10 - nck 2 exit power-down with dll on to any valid command; exit precharge power-down with dll frozen to commands not requiring a locked dll t xp 7.5 - 6 - ns 3- 3- nck command pass disable delay t cpded 1-1-nck timing of act command to power-down entry t actpden 1-1 - nck 20 timing of pre command to power-down entry t prpden 1-1 - nck 20 timing of rd/rda command to power-down entry t rdpden rl+4+1 - rl+4+1 - nck timing of wr command to power-down entry (bl8otf, bl8mrs, bl4otf) t wrpden (min) wl + 4 + [twr/tck(avg)] nck 9 timing of wr command to power-down entry (bc4mrs) t wrpden (min) wl + 2 + [twr/tck(avg)] nck 9 timing of wra command to power-down entry (bl8otf, bl8mrs, bl4otf) t wrapden wl+4 +wr+1 -wl+4 +wr+1 - nck 10 timing of wra command to power-down entry (bc4mrs) t wrapden wl+2 +wr+1 -wl+2 +wr+1 - nck 10 timing of ref command to power-down entry t refpden 1-1 - nck 20,21 timing of mrs command to power-down entry t mrspden t mod (min) - t mod (min) - rtt turn-on t aon -300 300 -250 250 ps 7 asynchronous rtt turn-on delay (power-down with dll frozen) t aonpd 2 8.5 2 8.5 ns rtt_nom and rtt_wr turn-off time from odtloff reference t aof 0.3 0.7 0.3 0.7 t ck (avg) 8 asynchronous rtt turn-off delay (power-down with dll frozen) t aofpd 2 8.5 2 8.5 ns odt high time without write command or with write command and bc4 odth4 4-4 - nck odt high time with write command and bl8 odth8 6-6 - nck rtt dynamic change skew t adc 0.3 0.7 0.3 0.7 t ck (avg) power-up and reset calibration time t zqinit 512 - 512 - nck normal operation full calibration time t zqoper 256 - 256 - nck normal operation short calibration time t zqcs 64 - 64 - nck 23 first dqs pulse rising edge after write leveling mode is programmed t wlmrd 40 - 40 - nck 3 parameter symbol -h7 (ddr3-1066) -i9 (ddr3-1333) unit note min max min max
27 ams73cag01808ra rev. 1.0 december 2010 dqs, dqs delay after write leveling mode is pro-grammed t wldqsen 25 - 25 - nck 3 write leveling setup time from rising ck, ck crossing to rising dqs, dqs crossing t wls 245 - 195 - ps write leveling hold time from rising dqs, dqs crossing to rising ck, ck crossing t wlh 245 - 195 - ps write leveling output delay t wlo 0909ns write leveling output error t wloe 0202ns absolute clock period t ck (abs) tck(avg)min + tjit(per)min tck(avg)max + tjit(per)max tck(avg)min + tjit(per)min tck(avg)max + tjit(per)max ps absolute clock high pulse width t ch (abs) 0.43 - 0.43 - t ck (avg) 30 absolute clock low pulse width t cl (abs) 0.43 - 0.43 - t ck (avg) 31 clock period jitter t jit (per) -90 90 -80 80 ps clock period jitter during dll locking period t jit (per,lck) -80 80 -70 70 ps cycle to cycle period jitter t jit (cc) -180-160ps cycle to cycle period jitter during dll locking period t jit (cc,lck) -160-140ps cumulative error across 2 cycles t err (2per) -132 132 -118 118 ps cumulative error across 3 cycles t err (3per) -157 157 -140 140 ps cumulative error across 4 cycles t err (4per) -175 175 -155 155 ps cumulative error across 5 cycles t err (5per) -188 188 -168 168 ps cumulative error across 6 cycles t err (6per) -200 200 -177 177 ps cumulative error across 7 cycles t err (7per) -209 209 -186 186 ps cumulative error across 8 cycles t err (8per) -217 217 -193 193 ps cumulative error across 9 cycles t err (9per) -224 224 -200 200 ps cumulative error across 10 cycles t err (10per) -231 231 -205 205 ps cumulative error across 11 cycles t err (11per) -237 237 -210 210 ps cumulative error across 12 cycles t err (12per) -242 242 -215 215 ps cumulative error across n = 13,14,...49,50 cycles t err (nper) t err (nper)min = (1 + 0.68ln(n))*t jit (per)min t err (nper)max = (1 + 0.68ln(n))*t jit (per)max ps 32 parameter symbol -h7 (ddr3-1066) -i9 (ddr3-1333) unit note min max min max
28 ams73cag01808ra rev. 1.0 december 2010 notes for ac electrical characteristics note : 1. actual value dependant upon measurement level definitions which are tbd. 2. commands requiring a locked dll are: read (and reada) and synchronous odt commands. 3. the max values are system dependent. 4. wr as programmed in mode register. 5. value must be rounded-up to next higher integer value. 6. there is no maximum cycle time limit besides th e need to satisfy the refresh interval, trefi. 7. odt turn on time (min.) is when the device leaves high impedance and odt resistance begins to turn on. odt turn on time (max.) is when the odt resistance is fully on. both are measured from odtlon. 8. odt turn-off time (min.) is when the device starts to turn-off odt resistan ce. odt turn-off ti me (max.) is when the bus is in high impedance. both are measured from odtloff. 9. twr is defined in ns, for calculation of twrpden it is necessary to round up twr / tck to the next integer. 10. wr in clock cycles as programmed in mr0. 11. the maximum read postamble is bound by tdqsck(min) plus tqsh(min) on the left side and thz(dqs)max on the right side. 12. output timing deratings are relative to the sdram input clock. when the device is operated with input clock jitter, this parameter needs to be derated by tbd. 13. value is only valid for ron34. 14. single ended signal parameter. refer to the section of tlz(dqs), tlz(dq), thz(dqs), thz(dq) notes for definition and measurement method. 15. trefi depends on operating case temperature (tc). 16. tis(base) and tih( base) values are for 1v/ns command/addresss singl e-ended slew rate and 2v/ns ck, ck differential slew rate, note for dq and dm signals, vref(dc) = vrefdq(dc). for input only pins except reset , vref(dc) = vrefca(dc). see address / co mmand setup, hold and derating section. 17. tds(base) and tdh(base) values are for 1v/n s dq single-ended slew rate and 2v/ns dqs, dqs differential slew rate. note for dq and dm signals,vref(dc)= vrefdq( dc). for input only pins except reset, vref(dc) = vrefca(dc). see data setup, hold and and slew rate derating section. 18. start of internal write tran saction is defined as follows ; for bl8 (fixed by mrs and on-the-fly) : rising clock edg e 4 clock cycles after wl. for bc4 (on-the-fly) : rising cl ock edge 4 clock cycles after wl. for bc4 (fixed by mrs) : rising cl ock edge 2 clock cycles after wl. 19. the maximum read preamble is bound by tlzdqs(min) on the left side and tdqsck(max) on the right side. 20. cke is allowed to be registered low while operations su ch as row activation, precharge, autoprecharge or refresh are in progress, but power-down idd spec will not be applied until finishing those operation. 21. although cke is allowed to be registered low after a refresh command once trefpden(min) is satisfied, there are cases where additional time such as txpdll(min) is also required. 22. defined between end of mpr read burst and mrs which reloads mpr or disables mpr function. 23. one zqcs command can effectively correct a minimum of 0.5 % (zqcorrection) of ron and rtt impedance error within 64 nck for all speed bins assuming the maximum sens itivities specified in the ?output driver voltage and temperature sensitivity? and ?odt voltage and temperature sensitivity? tables. the appropriate interval between zqcs commands can be determined from these tables and other ap plication specific parameters. one method for calculating the interval between zqcs co mmands, given the temperatur e (tdriftrate) and voltage (vdriftrate) drift rates that the sdram is subject to in the application, is illu strated. the interval could be defined by the following formula: zqcorrection (tsens x tdriftrate) + (vsens x vdriftrate) where tsens = max(drttdt, drondtm) and vsens = max(drttdv, drondvm) define the sdram temperature and voltage sensitivities.
29 ams73cag01808ra rev. 1.0 december 2010 24. the tis(base) ac150 specific ations are adjusted from the tis(base) spec ification by adding an additional 100 ps of derating to accommodate for the lower al ternate threshold of 150 mv and another 25 ps to account for the earlier reference point [(175 mv - 150 mv) / 1 v/ns]. 25. pulse width of a input signal is defined as the width between the first crossing of vref(dc) and the consecutive crossing of vref(dc). 26. tdqsl describes the instantaneous differ ential input low pulse width on dqs - dqs , as measured from one falling edge to the next consecutive rising edge. 27. tdqsh describes the instantaneous differ ential input high pulse width on dqs - dqs , as measured from one rising edge to the next consecutive falling edge. 28. tdqsh,act + tdqsl,act = 1 tck,act ; with txyz,act bein g the actual measured value of the respective timing parameter in the application. 29. tdsh,act + tdss,act = 1 tck,act ; with txyz,act being the ac tual measured value of the respective timing parameter in the application. 30. tch(abs) is the absolute instantaneous clock high pulse width, as measured from one rising edge to the following falling edge. 31. tcl(abs) is the absolute instantaneous clock low pulse width, as measured from one falling edge to the following rising edge. 32. n = from 13 cycles to 50 cycles. this row defines 38 parameters.
30 ams73cag01808ra rev. 1.0 december 2010 package diagram (x8) 78-ball fine pitch ball grid array outline
31

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