wms256k16-xxx 1 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com white electronic designs august 2004 rev. 6 256kx16 monolithic sram, smd 5962-96902 features access times 17, 20, 25, 35ns mil-std-883 compliant devices available packaging ? 44 pin ceramic soj (package 102) ? 44 lead ceramic flatpack (package 225) ? 44 lead formed ceramic flatpack organized as 256kx16 data byte control: ? lower byte (lb#) = i/o 1-8 ? upper byte (ub#) = i/o 9-16 2v minimum data retention for battery back up operation (wms256k16l-xxx low power version only) commercial, industrial and military temperature range 5v power supply low power cmos ttl compatible inputs and outputs pin configuration for wms256k16-xxx a 0-17 address inputs lb# lower-byte control (i/o 1-8 ) ub# upper-byte control (i/o 9-16 ) i/o 1-16 data input/output cs# chip select oe# output enable we# write enable v cc +5.0v power gnd ground nc no connection pin description 44 csoj 44 flatpack 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 a0 a1 a2 a3 a4 cs# i/o1 i/o2 i/o3 i/o4 v cc gnd i/o5 i/o6 i/o7 i/o8 we# a5 a6 a7 a8 a9 a17 a16 a15 oe# ub# lb# i/o16 i/o15 i/o14 i/o13 gnd v cc i/o12 i/o11 i/o10 i/o9 nc a14 a13 a12 a11 a10 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 top view
wms256k16-xxx 2 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com white electronic designs august 2004 rev. 6 truth table cs# we# oe# lb# ub# mode data i/o power i/o 1-8 i/o 9-16 hxxxx not select high z high z standby lhhxx output disable high z high z active lxxhh lhl lh read data out high z active h l high z data out l l data out data out llx lh write data in high z active h l high z data in l l data in data in absolute maximum ratings parameter symbol min max unit operating temperature t a -55 +125 c storage temperature t stg -65 +150 c signal voltage relative to gnd vg -0.5 v cc +0.5 v junction temperature tj 150 c supply voltage v cc -0.5 7.0 v recommended operating conditions parameter symbol min max unit supply voltage v cc 4.5 5.5 v input high voltage v ih 2.2 v cc + 0.3 v input low voltage v il -0.3 +0.8 v operating temp. (mil.) t a -55 +125 c capacitance t a = +25c parameter symbol condition max unit input capacitance c in v in = 0v, f = 1.0mhz 20 pf output capacitance c out v out = 0v, f = 1.0mhz 20 pf this parameter is guaranteed by design but not tested. dc characteristics v cc = 5.0v, gnd = 0v, -55c t a +125c parameter symbol conditions min max units input leakage current i li v cc = 5.5, v in = gnd to v cc 10 a output leakage current i lo cs# = v ih , oe# = v ih , v out = gnd to v cc 10 a operating supply current i cc cs# = v il , oe# = v ih , f = 5mhz, v cc = 5.5 275 ma standby current i sb cs# = v ih , oe# = v ih , f = 5mhz, v cc = 5.5 17 ma output low voltage v ol i ol = 6ma, v cc = 4.5 0.4 v output high voltage v oh i oh = -4.0ma, v cc = 4.5 2.4 v note: dc test conditions: v ih = v cc -0.3v, v il = 0.3v low power data retention characteristics (wms256k16l-xxx only) -55c t a +125c parameter symbol conditions min typ max units data retention supply voltage vdr cs# v cc -0.2v 2.0 5.5 v data retention current i ccdr 1 v cc = 3v 1.0 8.0 ma
wms256k16-xxx 3 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com white electronic designs august 2004 rev. 6 i current source d.u.t. c = 50 pf eff i ol v 1.5v (bipolar supply) z current source oh notes: vz is programmable from -2v to +7v. i ol & i oh programmable from 0 to 16ma. tester impedance z0 = 75 . vz is typically the midpoint of v oh and v ol . i ol & ioh are adjusted to simulate a typical resistive load circuit. ate tester includes jig capacitance. ac test circuit ac test conditions parameter typ unit input pulse levels v il = 0, v ih = 3.0 v input rise and fall 5 ns input and output reference level 1.5 v output timing reference level 1.5 v ac characteristics v cc = 5.0v, gnd = 0v, -55c t a +125c parameter write cycle symbol -17 -20 -25 -35 units min max min max min max min max write cycle time t wc 17 20 25 35 ns chip select to end of write t cw 14 17 20 25 ns address valid to end of write t aw 14 17 20 25 ns data valid to end of write t dw 10 12 15 20 ns write pulse width t wp 14 17 20 25 ns address setup time t as 0000 ns address hold time t ah 2222ns output active from end of write t ow 1 0000ns write enable to output in high z t whz 1 9 101015ns data hold time t dh 0000ns lb#, ub# valid to end of write t bw 14 17 20 25 ns 1. this parameter is guaranteed by design but not tested. ac characteristics v cc = 5.0v, gnd = 0v, -55c t a +125c parameter read cycle symbol -17 -20 -25 -35 units min max min max min max min max read cycle time t rc 17 20 25 35 ns address access time t aa 17 20 25 35 ns output hold from address change t oh 0000ns chip select access time t acs 17 20 25 35 ns output enable to output valid t oe 10 12 15 20 ns chip select to output in low z t clz 1 2555 ns output enable to output in low z t olz 1 0000ns chip disable to output in high z t chz 1 9 10 12 15 ns output disable to output in high z t ohz 1 9 101215ns lb#, ub# access time t ba 10 12 14 17 ns lb#, ub# enable to low z output t blz 1 0000ns lb#, ub# disable to high z output t bhz 1 9 101215ns 1. this parameter is guaranteed by design but not tested.
wms256k16-xxx 4 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com white electronic designs august 2004 rev. 6 timing waveform - read cycle write cycle - cs# controlled write cycle - we# controlled address data i/o read cycle 1 (cs# = oe# = v il , ub# or lb# = v il , we# = v ih ) t aa t oh t rc data valid previous data valid address data i/o read cycle 2 (we# = v ih ) t aa t acs t oe t clz t olz t ohz t rc data valid high impedance cs# oe# t chz lb#, ub# t bhz t ba t blz address data i/o write cycle 1, we# controlled t aw t cw t ah t wp t dw t whz t as t ow t dh t wc data valid cs# we# t bw lb#, ub# address data i/o write cycle 2, cs# controlled t aw t as t cw t ah t wp t dh t dw t wc cs# we# data valid t bw lb#, ub# write cycle - lb#, ub# controlled address data i/o write cycle 3, lb#, ub# controlled t aw t as t cw t ah t wp t dh t dw t wc cs# we# data valid t bw lb#, ub#
wms256k16-xxx 5 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com white electronic designs august 2004 rev. 6 all linear dimensions are millimeters and parenthetically in inches package 102: 44 lead, ceramic soj 1.27 (0.050) typ 28.70 (1.13) 0.25 (0.010) 26.7 (1.050) typ 11.3 (0.446) 0.2 (0.009) 3.96 (0.156) max 0.2 (0.008) 0.05 (0.002) 9.55 (0.376) 0.25 (0.010) 1.27 (0.050) 0.25 (0.010) 0.89 (0.035) radius typ package 225: 44 lead, ceramic flat pack all linear dimensions are millimeters and parenthetically in inches 28.45 (1.120) 0.26 (0.010) 12.95 (0.510) 0.13 (0.005) 2.60 (0.102) max 0.14 (0.006) 0.05 (0.002) 1.27 (0.050) typ 26.67 (1.050) typ 10.16 (0.400) 0.51 (0.020) 0.43 (0.017) 0.05 (0.002)
wms256k16-xxx 6 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com white electronic designs august 2004 rev. 6 ordering information package 211: 44 lead formed, ceramic flat pack all linear dimensions are millimeters and parenthetically in inches 12.95 (0.510) 0.13 (0.005) 3.81 (0.150) max 0.14 (0.006) 0.05 (0.002) pin 1 identifier 1.27 (0.050) typ 26.67 (1.050) typ 1.52 (0.060) typ 0.43 (0.017) 0.05 (0.002) + + 1.90 (0.075) typ 28.45 (1.120) 0.26 (0.010) 0.46 (0.030) typ 16.76 (0.660) 0.13 (0.005) w m s 256k16 x - xxx x x x lead finish: blank = gold plated leads a = solder dip leads device grade: m = military screened -55c to +125c i = industrial -40c to +85c c = commercial 0c to +70c package: dl = 44 lead ceramic soj (package 102) fl = 44 lead ceramic flatpack (package 225) fg = 44 lead formed ceramic flatpack access time (ns) improvement mark: blank = standard power l = low power data retention organization, 256k x 16 sram monolithic white electronic designs corp.
wms256k16-xxx 7 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com white electronic designs august 2004 rev. 6 device type speed package smd no. 256k x 16 sram monolithic 35ns 44 lead soj (dl) 5962-96902 01hmx 256k x 16 sram monolithic 25ns 44 lead soj (dl) 5962-96902 02hmx 256k x 16 sram monolithic 20ns 44 lead soj (dl) 5962-96902 03hmx 256k x 16 sram monolithic 17ns 44 lead soj (dl) 5962-96902 04hmx 256k x 16 sram monolithic 35ns 44 lead flatpack (fl) 5962-96902 01hnx 256k x 16 sram monolithic 25ns 44 lead flatpack (fl) 5962-96902 02hnx 256k x 16 sram monolithic 20ns 44 lead flatpack (fl) 5962-96902 03hnx 256k x 16 sram monolithic 17ns 44 lead flatpack (fl) 5962-96902 04hnx 256k x 16 sram monolithic 35ns 44 lead formed flatpack (fg) 5962-96902 01htx 256k x 16 sram monolithic 25ns 44 lead formed flatpack (fg) 5962-96902 02htx 256k x 16 sram monolithic 20ns 44 lead formed flatpack (fg) 5962-96902 03htx 256k x 16 sram monolithic 17ns 44 lead formed flatpack (fg) 5962-96902 04htx
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