1 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs ws512k8-xcx may 2004 rev. 4 512kx8 sram module, smd 5962-92078 access times 20, 25, 35, 45ns standard microcircuit drawing, 5962-92078 mil-std-883 compliant devices available rad tolerant devices available jedec standard 32 pin, hermetic ceramic dip (package 300) commercial, industrial and military temperature range (-55c to +125c) figure 1 C pin configuration block diagram 128k x 8 i/o0-7 128k x 8 128k x 8 128k x 8 a0-16 oe# decoder we# cs# a17 a18 pin description a0-18 address inputs i/o 0-7 data input/output cs# chip select oe# output enable we# write enable v cc +5.0v power gnd ground features 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 a18 a16 a14 a12 a7 a6 a5 a4 a3 a2 a1 a0 i/o0 i/o1 i/o2 gnd vcc a15 a17 we# a13 a8 a9 a11 oe# a10 cs# i/o7 i/o6 i/o5 i/o4 i/o3 top view organized as 512k x 8 5v power supply low power cmos ttl compatible inputs and outputs battery back-up operation
2 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs ws512k8-xcx may 2004 rev. 4 figure 2 C ac test circuit current source current source i ol i oh d.u.t. c eff = 50 pf v z 1.5v (bipolar supply) truth table cs# oe# we# mode data i/o power h x x standby high z standby l l h read data out active l x l write data in active l h h out disable high z active capacitance (t a = +25c) parameter symbol condition max unit input capacitance c in v in = 0v, f = 1.0mh z 45 pf output capicitance c out v out = 0v, f = 1.0mh z 45 pf this parameter is guaranteed by design but not tested. 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 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. 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 -0.5 +0.8 v operating temp. (mil.) t a -55 +125 c dc characteristics (v cc = 5.0v, gnd = 0v, -55c t a 125c) parameter symbol conditions -20 -25 -35 -45 units min max min max min max min max input leakage current i li v cc = 5.5, v in = gnd to v cc 10 10 10 10 a output leakage current i lo cs# = v ih , oe# = v ih , v out = gnd to v cc 10 10 10 10 a operating supply current i cc cs# = v il , oe# = v ih , f = 5mh z , v cc = 5.5 210 210 210 210 ma standby current i sb cs# = v ih , oe# = v ih , f = 5mh z 80 60 60 55 ma output low voltage v ol i ol = 8ma, v cc = 4.5 0.4 0.4 0.4 0.4 v output high voltage v oh i oh = -4.0ma, v cc = 4.5 2.4 2.4 2.4 2.4 v note: dc test conditions: v ih = v cc -0.3v, v il = 0.3v data retention characteristics for low power l version (-55c ta 125c) parameter symbol conditions -20 -25 -35 -45 units min typ max min typ max min typ max min typ max data retention supply voltage v dr cs# ? v cc -0.2v 2.0 5.5 2.0 5.5 2.0 5.5 2.0 5.5 v data retention current i ccdr 1v cc = 3v 8.0 12.8 8.0 12.8 8.0 12.8 8.0 12.8 ma
3 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs ws512k8-xcx may 2004 rev. 4 ac characteristics (v cc = 5.0v, gnd = 0v, -55c t a 125c) parameter read cycle symbol -20 -25 -35 -45 units min max min max min max min max read cycle time t rc 20 25 35 45 ns address access time t aa 20 25 35 45 ns output hold from address change t oh 3333ns chip select access time t acs 20 25 35 45 ns output enable to output valid t oe 10 10 25 35 ns chip select to output in low z t clz 1 3333ns output enable to output in low z t olz 1 0000ns chip disable to output in high z t chz 1 15 17 20 30 ns output disable to output in high z t ohz 1 12 15 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 write cycle symbol -20 -25 -35 -45 units min max min max min max min max write cycle time t wc 20 25 35 45 ns chip select to end of write t cw 16 20 25 30 ns address valid to end of write t aw 16 20 25 30 ns data valid to end of write t dw 15 15 20 25 ns write pulse width t wp 16 20 25 30 ns address setup time t as 2222ns address hold time t ah 2222ns output active from end of write t ow 1 4555ns write enable to output in high z t whz 1 10015020025ns data hold time t dh 1111ns 1. this parameter is guaranteed by design but not tested.
4 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs ws512k8-xcx may 2004 rev. 4 figure 3 C timing waveform - read cycle figure 5 C write cycle - cs# controlled figure 4 C write cycle - we# controlled a ddress t wc t aw t cw t ah t as t wp t whz t dw t ow t dh data valid cs# data i/o we# write cycle 1, we# controlled a ddress 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 a ddress t rc cs# oe# data i/o t aa t acs t chz t clz t oe t olz t ohz high impedance data valid read cycle 2 (we# = v ih ) a ddress data i/o previous data valid data valid read cycle 1 (cs# = oe# = v il , we# = v ih ) t oh t aa t rc
5 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs ws512k8-xcx may 2004 rev. 4 package 300: 32 pin, ceramic dip, single cavity side brazed all linear dimensions are millimeters and parenthetically in inches 2.5 (0.100) typ 1.27 (0.050) 0.1 (0.005) 0.46 (0.018) 0.05 (0.002) 0.84 (0.033) 0.4 (0.014) 3.2 (0.125) min 0.25 (0.010) 0.05 (0.002) 15.25 (0.600) 0.25 (0.010) 42.4 (1.670) 0.4 (0.016) 4.34 (0.171) 0.79 (0.031) pin 1 identifier 15.04 (0.592) 0.25 (0.012)
6 white electronic designs corporation ? (602) 437-1520 ? www.wedc.com white electronic designs ws512k8-xcx may 2004 rev. 4 lead finish: blank = gold plated leads a = solder dip leads device grade: q = mil-std-883 compliant m = military screened -55c to +125c i = industrial -40c to +85c c = commercial 0c to +70c package: c = ceramic 0.600" dip (package 300) access time (ns) options blank = standard power l = low power organization, 512k x 8 sram white edc ordering information device type speed package smd no. 512k x 8 sram 45ns 32 pin dip 5962-92078 06htx 512k x 8 sram 35ns 32 pin dip 5962-92078 07htx 512k x 8 sram 25ns 32 pin dip 5962-92078 08htx 512k x 8 sram 20ns 32 pin dip 5962-92078 09htx w s 512k 8 x - xxx c x x
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