1 white electronic designs corporation ? (602) 437-1520 ? www.w hiteedc.com white electronic designs white electronic designs corp. reserves the right to change products or speci? cations without notice. ws512k16-xxx april 1998 advanced* 256k x 16 256k x 16 ub# oe# we# cs 1# cs 2# i/o 1-16 a 0-17 lb# 512kx16 sram module data i/o compatible with 3.3v devices 2v minimum data retention for battery back up operation commercial, industrial and military temperature range 5 volt power supply (3.3v parts also available) low power cmos ttl compatible inputs and outputs * this product is under development, is not quali? ed or characterized and is subject to change or cancellation without notice. 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 209) organized as two banks of 256kx16 data byte control: lower byte (lb#) = i/o1-8 upper byte (ub#) = i/o9-16 block diagram top view pin configuration for ws512k16-xxx 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 cs1# 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 cs2# 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 44 csoj 44 flatpack pin description a0-17 address inputs lb# lower-byte control (i/o1-8) ub# upper-byte control (i/o9-16) i/o1-16 data input/output cs1-2# chip select oe# output enable we# write enable v cc +5.0v power gnd ground nc no connection
2 white electronic designs corporation ? (602) 437-1520 ? www.w hiteedc.com white electronic designs ws512k16-xxx april 1998 advanced white electronic designs corp. reserves the right to change products or speci? cations without notice. 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 v g -0.5 v cc +0.5 v junction temperature t j 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 opertating temp. (mil) t a -55 +125 c truth table cs1# cs2# we# oe# lb# ub# mode data i/o power h h x x x x not select i/o1-8 i/o9-16 standby lh hhxx output disable high z high z active hl lh xxhh hl hl hl lh read data out high z active lh h l high z data out l l data out data out hl lh lh write data in high z active lh h l high z data in l l data in data in capacitance t a = +25c parameter symbol conditions max unit input capacitance c in v in = 0v, f = 1.0 mhz 25 pf output capacitance c out v out = 0v, f = 1.0 mhz 25 pf this parameter is guaranteed by design but not tested. dc characteristics v cc = 5.0v, v ss = 0v, -55c t a +125c parameter sym 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 = 5.5 290 ma standby current i sb cs# = v ih , oe# = v ih , f = 5mhz, v cc = 5.5 30 ma output low voltage v ol i ol = 8ma, 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 data retention characteristics -55c t a +125c characteristic sym conditions min typ max units data retention supply voltage v dr cs# v cc -0.2v 2.0 5.5 a data retention current i ccdr1 v cc = 3v 2.0 12.0* ma * also available in low power version. please call factory for informaion.
3 white electronic designs corporation ? (602) 437-1520 ? www.w hiteedc.com white electronic designs ws512k16-xxx april 1998 advanced white electronic designs corp. reserves the right to change products or speci? cations without notice. i current source d.u.t. c = 50 pf eff i ol v 1.5v (bipolar supply) z current source oh 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 0000ns address hold time t ah 0000ns 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 2555ns output enable to output in low z t olz 1 0000ns chip disable to output in high z t chz 1 9 101215ns 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 blz1 0000ns lb#, ub# disable to high z output t bhz1 9 101215ns 1. this parameter is guaranteed by design but not tested. ac test circuit notes: v z is programmable from -2v to +7v. i ol & i oh programmable from 0 to 16ma. tester impedance z0 = 75?. v z is typically the midpoint of v oh and v ol . i ol & i oh are adjusted to simulate a typical resistive load circuit. ate tester includes jig capacitance. 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
4 white electronic designs corporation ? (602) 437-1520 ? www.w hiteedc.com white electronic designs ws512k16-xxx april 1998 advanced white electronic designs corp. reserves the right to change products or speci? cations without notice. read cycle 1, (cs# = oe# = v il , ub# or lb# = v il , we# = v ih ) 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# timing waveform C read cycle write cycle C cs# controlled write cycle C we# controlled write cycle C lb#, ub# controlled 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# 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#
5 white electronic designs corporation ? (602) 437-1520 ? www.w hiteedc.com white electronic designs ws512k16-xxx april 1998 advanced white electronic designs corp. reserves the right to change products or speci? cations without notice. package 102: 44 lead, ceramic soj package 209: 44 lead, ceramic flat pack 9.55 (0.376) 0.25 (0.010) 1.27 (0.050) typ 28.70 (1.13) 0.25 (0.010) pin 1 identifier 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) 1.27 (0.050) 0.25 (0.010) 0.89 (0.035) radius typ 28.45 (1.120) 0.26 (0.010) 12.95 (0.510) 0.13 (0.005) 3.18 (0.125) max 0.13 (0.005) 0.05 (0.002) pin 1 identifier 1.27 (0.050) typ 9.90 (0.390) 0.13 (0.005) 26.67 (1.050) typ 10.16 (0.400) 0.51 (0.020) 0.43 (0.017) 0.05 (0.002) all linear dimensions are millimeters and parenthetically in inches all linear dimensions are millimeters and parenthetically in inches
6 white electronic designs corporation ? (602) 437-1520 ? www.w hiteedc.com white electronic designs ws512k16-xxx april 1998 advanced white electronic designs corp. reserves the right to change products or speci? cations without notice. ordering information w s 512k16 - xx 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 type: dl = 44 lead ceramic soj (package 102) fl = 44 lead ceramic flatpack (package 209) access time (ns) organization, two banks of 256kx16 sram white electronic designs corporation
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