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K4M641633K - r(b)n/g/l/f january 2006 1 mobile-sdram ? 3.0v & 3.3v power supply. ? lvcmos compatible with multiplexed address. ? four banks operation. ? mrs cycle with address key programs. -. cas latency (1, 2 & 3). -. burst length (1, 2, 4, 8 & full page). -. burst type (sequential & interleave). ? emrs cycle with address key programs. ? all inputs are sampled at the positive going edge of the system clock. ? burst read single-bit write operation. ? special function support. -. pasr (partial array self refresh). -. internal tcsr (temperature compensated self refresh) -. ds (driver strength) ? dqm for masking. ? auto refresh. ? 64ms refresh period (4k cycle). ? commercial temperature operation (-25 c ~ 70 c). ? extended temperature operation (-25 c ~ 85 c). ? 54balls fbga( -rxxx -pb, -bxxx -pb free). features the K4M641633K is 67,108,864 bits synchronous high data rate dynamic ram organized as 4 x 1,048,576 words by 16 bits, fabricated with samsung?s high performance cmos technol- ogy. synchronous design allows pr ecise cycle control with the use of system clock and i/o trans actions are pos sible on every clock cycle. range of operating frequencies, programmable burst lengths and programmable latencies allow the same device to be useful for a variety of high bandwidth and high per- formance memory system applications. general description ordering information - r(b)n/g : low power, extended temperature(-25 c ~ 85 c) - r(b)l/f : low power, commercial temperature(-25 c ~ 70 c) notes : 1. in case of 40mhz frequency, cl1 can be supported. 2. samsung are not designed or manufactured fo r use in a device or system that is us ed under circumstance in which human life i s potentially at stake. please contact to the memory marketing team in samsung el ectronics when considering the use of a product contained herein for any specific pur pose, such as medical, aerospace, nucle ar, military, vehicular or undersea repeater use. part no. max freq. interface package K4M641633K-r(b)n/g/l/f75 133mhz(cl=3),111mhz(cl=2) lvcmos 54 fbga pb (pb free) K4M641633K-r(b)n/g/l/f1h 111mhz(cl=2) K4M641633K-r(b)n/g/l/f1l 111mhz(cl=3) *1 ,83mhz(cl=2) 1m x 16bit x 4 banks mobile sdram in 54fbga
K4M641633K - r(b)n/g/l/f january 2006 2 mobile-sdram bank select data input register 1m x 16 1m x 16 sense amp output buffer i/o control column decoder latency & burst length programming register address register row buffer refresh counter row decoder col. buffer lras lcbr lcke lras lcbr lwe ldqm clk cke cs ras cas we l(u)dqm lwe ldqm dqi clk add lcas lwcbr 1m x 16 1m x 16 timing register functional block diagram
K4M641633K - r(b)n/g/l/f january 2006 3 mobile-sdram #a1 ball origin indicator K4M641633K sec week xxxx 54ball(6x9) fbga 123789 a vss dq15 vssq vddq dq0 vdd b dq14 dq13 vddq vssq dq2 dq1 c dq12 dq11 vssq vddq dq4 dq3 d dq10 dq9 vddq vssq dq6 dq5 e dq8 nc vss vdd ldqm dq7 f udqm clk cke cas ras we g nc a11 a9 ba0 ba1 cs ha8a7a6a0a1a10 j vss a5 a4 a3 a2 vdd pin name pin function clk system clock cs chip select cke clock enable a 0 ~ a 11 address ba 0 ~ ba 1 bank select address ras row address strobe cas column address strobe we write enable l(u)dqm data input/output mask dq 0 ~ 15 data input/output v dd /v ss power supply/ground v ddq /v ssq data output power/ground symbol min typ max a - - 1.00 a 1 0.25 - - e 7.90 8.00 8.10 e 1 - 6.40 - d 7.90 8.00 8.10 d 1 - 6.40 - e - 0.80 - b 0.45 0.50 0.55 z - - 0.10 [unit:mm] package dimension and pin configuration < top view *2 > < bottom view *1 > 521 63 4 8 97 f e d c b j h g a e d d 1 e 1 e < top view *2 > *2: top view *1: bottom view b a a1 z
K4M641633K - r(b)n/g/l/f january 2006 4 mobile-sdram dc operating conditions recommended operating conditions (voltage referenced to v ss = 0v, t a = -25 c ~ 85 c for extended, -25 c ~ 70 c for commercial) notes : 1. under all conditions vddq must be less than or equal to vdd. 2. vih (max) = 5.3v ac.the overshoot voltage duration is 3ns. 3. vil (min) = -2.0v ac. the undershoot voltage duration is 3ns. 4. any input 0v vin vddq. input leakage currents include hi-z output leakag e for all bi-directional buffers with tri-state outputs. 5. dout is disabled, 0v vout vddq. parameter symbol min typ max unit note supply voltage v dd 2.7 3.0 3.6 v 1 v ddq 2.7 3.0 3.6 v 1 input logic high voltage v ih 2.2 3.0 v ddq + 0.3 v 2 input logic low voltage v il -0.3 0 0.5 v 3 output logic high voltage v oh 2.4 - - v i oh = -2ma output logic low voltage v ol - - 0.4 v i ol = 2ma input leakage current i li -2 - 2 ua 4 capacitance (v dd = 3.0v & 3.3v, t a = 23 c, f = 1mhz, v ref =0.9v 50 mv) pin symbol min max unit note clock c clk 1.5 3.5 pf ras , cas , we , cs , cke, dqm c in 1.5 3.0 pf address c add 1.5 3.0 pf dq 0 ~ dq 15 c out 2.0 4.5 pf absolute maximum ratings notes: permanent device damage may occur if absolute maximum ratings are exceeded. functional operation should be restricted to recommended operating condition. exposure to higher than recommended voltage for extended periods of time could affect device reliability. parameter symbol value unit voltage on any pin relative to v ss v in , v out -1.0 ~ 4.6 v voltage on v dd supply relative to v ss v dd , v ddq -1.0 ~ 4.6 v storage temperature t stg -55 ~ +150 c power dissipation p d 1.0 w short circuit current i os 50 ma
K4M641633K - r(b)n/g/l/f january 2006 5 mobile-sdram dc characteristics recommended operating conditions (voltage referenced to v ss = 0v, t a = -25 to 85 c for extended, -25 to 70 c for commercial) notes: 1. measured with outputs open. 2. refresh period is 64ms. 3. internal tcsr can be supported. in commercial temp : max 45 c/max 70 c, in extended temp : max 45 c/max 85 c 4. K4M641633K-r(b)g/f** 5. it has +/-5 c tolerance. 6. unless otherwise noted, input swing ievei is cmos(vih /vil=vddq/vssq). parameter symbol test condition version unit note -75 -1h -1l operating current (one bank active) i cc1 burst length = 1 t rc t rc (min) i o = 0 ma 50 50 45 ma 1 precharge standby current in power-down mode i cc2 p cke v il (max), t cc = 10ns 0.5 ma i cc2 ps cke & clk v il (max), t cc = 0.5 precharge standby current in non power-down mode i cc2 n cke v ih (min), cs v ih (min), t cc = 10ns input signals are changed one time during 20ns 10 ma i cc2 ns cke v ih (min), clk v il (max), t cc = input signals are stable 7 active standby current in power-down mode i cc3 p cke v il (max), t cc = 10ns 5 ma i cc3 ps cke & clk v il (max), t cc = 5 active standby current in non power-down mode (one bank active) i cc3 n cke v ih (min), cs v ih (min), t cc = 10ns input signals are changed one time during 20ns 20 ma i cc3 ns cke v ih (min), clk v il (max), t cc = input signals are stable 20 ma operating current (burst mode) i cc 4 i o = 0 ma page burst 4banks activated t ccd = 2clks 80 65 65 ma 1 refresh current i cc 5 t rc t rc (min) 115 110 100 ma 2 self refresh current i cc 6 cke 0.2v -n/l 300 ua -g/f internal tcsr 45 *5 85/70 c 3 full array 180 300 ua 4 1/2 of full array 140 220 1/4 of full array 120 180
K4M641633K - r(b)n/g/l/f january 2006 6 mobile-sdram ac operating test conditions (v dd = 2.7v 3.6v, t a = -25 to 85 c for extended, -25 to 70 c for commercial) parameter value unit ac input levels (vih/vil) 2.4 / 0.4 v input timing measurement reference level 0.5 x v ddq v input rise and fall time tr/tf = 1/1 ns output timing measurement reference level 0.5 x v ddq v output load condition see figure 2 vddq 1200 ? 870 ? output 30pf voh (dc) = 2.4v, ioh = -2ma vol (dc) = 0.4v, iol = 2ma vtt=0.5 x vddq 50 ? output 30pf z0=50 ? figure 2. ac output load circuit figure 1. dc output load circuit
K4M641633K - r(b)n/g/l/f january 2006 7 mobile-sdram operating ac parameter (ac operating conditions unless otherwise noted) notes: 1. the minimum number of clock cycles is determined by dividing the mini mum time required with clock cycle time and then rounding off to the next higher integer. 2. minimum delay is required to complete write. 3. minimum trdl=2clk and tdal(= trdl + trp) is required to complete both of last data write command(trdl) and precharge command (trp). 4. all parts allow every cycle column address change. 5. in case of row precharge interrupt, auto precharge and read burst stop. 6. maximum burst refresh cycle : 8 parameter symbol version unit note -75 -1h -1l row active to row active delay t rrd (min) 15 18 18 ns 1 ras to cas delay t rcd (min) 18 18 24 ns 1 row precharge time t rp (min) 18 18 24 ns 1 row active time t ras (min) 45 50 60 ns 1 t ras (max) 100 us row cycle time t rc (min) 63 68 84 ns 1,6 last data in to row precharge t rdl (min) 2 clk 2 last data in to active delay t dal (min) trdl + trp - 3 last data in to new col. address delay t cdl (min) 1 clk 2 last data in to burst stop t bdl (min) 1 clk 2 col. address to col. address delay t ccd (min) 1 clk 4 number of valid output data cas latency=3 2 ea 5 number of valid output data cas latency=2 1 number of valid output data cas latency=1 0
K4M641633K - r(b)n/g/l/f january 2006 8 mobile-sdram ac characteristics (ac operating conditions unless otherwise noted) notes : 1. parameters depend on programmed cas latency. 2. if clock rising time is longer than 1ns, (tr/2-0.5)ns should be added to the parameter. 3. assumed input rise and fall time (tr & tf) = 1ns. if tr & tf is longer than 1ns, trans ient time compensation should be considered, i.e., [(tr + tf)/2-1]ns should be added to the parameter. parameter symbol -75 -1h -1l unit note min max min max min max clk cycle time cas latency=3 t cc 7.5 1000 9.0 1000 9.0 1000 ns 1 clk cycle time cas latency=2 t cc 9.0 9.0 12 clk cycle time cas latency=1 t cc - - 25 clk to valid output delay cas latency=3 t sac 5.4 7 7 ns 1,2 clk to valid output delay cas latency=2 t sac 7 7 8 clk to valid output delay cas latency=1 t sac - - 20 output data hold time cas latency=3 t oh 2.5 2.5 2.5 ns 2 output data hold time cas latency=2 t oh 2.5 2.5 2.5 output data hold time cas latency=1 t oh - - 2.5 clk high pulse width t ch 2.5 3.0 3.0 ns 3 clk low pulse width t cl 2.5 3.0 3.0 ns 3 input setup time t ss 2.0 2.5 2.5 ns 3 input hold time t sh 1.0 1.0 1.0 ns 3 clk to output in low-z t slz 1 1 1 ns 2 clk to output in hi-z cas latency=3 t shz 5.4 7 7 ns cas latency=2 7 7 8 cas latency=1 - - 20
K4M641633K - r(b)n/g/l/f january 2006 9 mobile-sdram simplified truth table (v=valid, x=don t care, h=logic high, l=logic low) notes : 1. op code : operand code a0 ~ a11 & ba0 ~ ba1 : program keys. (@mrs) 2. mrs can be issued only at all banks precharge state. a new command can be issued after 2 clk cycles of mrs. 3. auto refresh functions are the same as cbr refresh of dram. the automatical precharge without ro w precharge command is meant by "auto". auto/self refresh can be issued only at all banks precharge state. partial self refresh can be issued only after setting partial self refresh mode of emrs. 4. ba0 ~ ba1 : bank select addresses. 5. during burst read or write with auto precharge, new read/write command can not be issued. another bank read/write command can be issued after the end of burst. new row active of the associated bank can be issued at trp after the end of burst. 6. burst stop command is valid at every burst length. 7. dqm sampled at the positive going edge of clk masks the data-in at that same clk in write oper ation (write dqm latency is 0) , but in read operation, it makes the data-out hi-z state after 2 clk cycles. (read dqm latency is 2). command cken-1 cken cs ras cas we dqm ba 0,1 a10/ap a11, a9 ~ a0 note register mode register set h x l l l l x op code 1, 2 refresh auto refresh h h l l l h x x 3 self refresh entry l 3 exit l h l h h h x x 3 h x x x 3 bank active & row addr. h x l l h h x v row address read & column address auto precharge disable h x l h l h x v l column address (a0~a7) 4 auto precharge enable h 4, 5 write & column address auto precharge disable h x l h l l x v l column address (a0~a7) 4 auto precharge enable h 4, 5 burst stop h x l h h l x x 6 precharge bank selection h x l l h l x v l x all banks x h clock suspend or active power down entry h l h x x x x x l v v v exit l h x x x x x precharge power down mode entry h l h x x x x x l h h h exit l h h x x x x l v v v dqm h x v x 7 no operation command h x h x x x x x l h h h
K4M641633K - r(b)n/g/l/f january 2006 10 mobile-sdram register programmed with extended mrs address ba1 ba0 a11 ~ a10/ap a9 a8 a7 a6 a5 a4 a3 a2 a1 a0 function mode select rfu *1 ds rfu *1 pasr normal mrs mode test mode cas latency burst type burst length a8 a7 type a6 a5 a4 latency a3 type a2 a1 a0 bt=0 bt=1 0 0 mode register set 0 0 0 reserved 0 sequential 0 0 0 1 1 0 1 reserved 0 0 1 1 1 interleave 0 0 1 2 2 1 0 reserved 0 1 0 2 mode select 0 1 0 4 4 1 1 reserved 0 1 1 3 ba1 ba0 mode 0 1 1 8 8 write burst length 1 0 0 reserved 0 0 setting for nor- mal mrs 1 0 0 reserved reserved a9 length 1 0 1 reserved 1 0 1 reserved reserved 0 burst 1 1 0 reserved 1 1 0 reserved reserved 1 single bit 1 1 1 reserved 1 1 1 full page reserved full page length x16 : 64mb(256), 128mb(512),256mb(512),512mb(1024) register programmed with normal mrs address ba0 ~ ba1 a11 ~ a10/ap a9 *2 a8 a7 a6 a5 a4 a3 a2 a1 a0 function "0" setting for normal mrs rfu w.b.l test mode cas latency bt burst length a. mode register field table to program modes notes: 1.rfu(reserved for future use) should stay "0" during mrs cycle. 2.if a9 is high during mrs cycle, "burst read single bit write" function will be enabled. mode select driver strength pasr ba1 ba0 mode a6 a5 driver strength a2 a1 a0 size of refreshed array 0 0 normal mrs 0 0 full 0 0 0 full array 0 1 reserved 0 1 1/2 0 0 1 1/2 of full array 1 0 emrs for mobile sdram 1 0 reserved 0 1 0 1/4 of full array 1 1 reserved 1 1 reserved 0 1 1 reserved reserved address 1 0 0 reserved a11~a10/ap a9 a8 a7 a4 a3 1 0 1 reserved 0 0 0 0 0 0 1 1 0 reserved 1 1 1 reserved emrs for pasr(partial array self ref.) & ds(driver strength)
K4M641633K - r(b)n/g/l/f january 2006 11 mobile-sdram 1. in order to save power consumpt ion, mobile sdram has pasr option. 2. mobile sdram supports 3 kinds of pasr in self refresh mo de : full array, 1/2 of full array and 1/4 of full array. ba1=0 partial self refresh area 1. apply power and attempt to maintain cke at a high state and all other inputs may be undefined. - apply vdd before or at the same time as vddq. 2. maintain stable power, stable clock and nop input condition for a minimum of 200us. 3. issue precharge commands for all banks of the devices. 4. issue 2 or more auto-refresh commands. 5. issue a mode register set command to initialize the mode register. 6. issue a extended mode register set command to define ds or pasr operating type of the device after normal mrs. for operating with ds or pasr , set ds or pasr mode in emrs setting stage. in order to adjust another mode in the state of ds or pasr mode, additional emrs set is requir ed but power up sequence is not needed again at this time. in that case, all banks have to be in idle state prior to adjusting emrs set. ba0=0 ba1=0 ba0=0 ba1=0 ba0=1 ba1=1 ba0=1 ba1=1 ba0=0 ba1=1 ba0=1 ba1=1 ba0=0 ba1=0 ba0=1 ba1=0 ba0=0 ba1=0 ba0=1 ba1=1 ba0=1 ba1=1 ba0=0 partial array self refresh b. power up sequence - full array - 1/2 array - 1/4 array internal temperature compensated self refresh (tcsr) 1. in order to save power consumption, mobi le-dram includes the internal temperature s ensor and control uni ts to control the se lf refresh cycle au tomatically according to the two temperature range : 45 c and 85 c(for extended), 70 c(for commercial). 2. if the emrs for external tcsr is issued by the c ontroller, this emrs code for tcsr is ignored. 3. it has +/-5 c tolerance. temperature range self refresh current (icc6) unit -n/l -g/f full array 1/2 of full array 1/4 of full array 85/70 c 300 300 220 180 ua 45 c *3 180 140 120
K4M641633K - r(b)n/g/l/f january 2006 12 mobile-sdram c. burst sequence 1. burst length = 4 initial address sequential interleave a1 a0 0 0 0 1 2 3 0 1 2 3 0 1 1 2 3 0 1 0 3 2 1 0 2 3 0 1 2 3 0 1 1 1 3 0 1 2 3 2 1 0 2. burst length = 8 initial address sequential interleave a2 a1 a0 0 0 0 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 0 1 1 2 3 4 5 6 7 0 1 0 3 2 5 4 7 6 0 1 0 2 3 4 5 6 7 0 1 2 3 0 1 6 7 4 5 0 1 1 3 4 5 6 7 0 1 2 3 2 1 0 7 6 5 4 1 0 0 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 1 0 1 5 6 7 0 1 2 3 4 5 4 7 6 1 0 3 2 1 1 0 6 7 0 1 2 3 4 5 6 7 4 5 2 3 0 1 1 1 1 7 0 1 2 3 4 5 6 7 6 5 4 3 2 1 0

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