1 white electronic designs corporation ?phoenix, az ?(602) 437-1520 wms128k8v-xxx mil-std-883 compliant devices available commercial, industrial and military temperature range 3.3 volt power supply low power cmos ttl compatible inputs and outputs * this data sheet describes a product under development, not fully characterized, and is subject to change without notice. ** package under developement. 128kx8 3.3v monolithic sram preliminary* evolutionary pinout a 0-16 address inputs i/o 0-7 data input/outputs cs chip select oe output enable we write enable v cc +3.3v power v ss ground nc not connected pin description 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 a0 a1 a2 a3 cs i/o1 i/o2 v cc v ss i/o3 i/o4 we a4 a5 a6 a7 a16 a15 a14 a13 oe i/o8 i/o7 v ss v cc i/o6 i/o5 a12 a11 a10 a9 a8 top view top view 32 csoj (dr) 32 flatpack (fr)** june 2000 rev. 3 features access times 15, 17, 20, 25, 35ns revolutionary, center power/ground pinout jedec approved 32 lead ceramic soj (package 101) 32 lead ceramic flat pack (package 220)** evolutionary, corner power/ground pinout jedec approved 32 pin ceramic dip (package 300) 32 pin, rectangular ceramic leadless chip carrier (package 601) 32 dip (c) revolutionary pinout top view 32 clcc
2 white electronic designs corporation ?phoenix, az ?(602) 437-1520 wms128k8v-xxx truth table 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 vcc+0.5 v junction temperature t j 150 c supply voltage v cc -0.5 5.5 v 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 recommended operating conditions 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. parameter symbol min max unit supply voltage v cc 3.0 3.6 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 = +25 c) i current source d.u.t. c = 50 pf eff i ol v 1.5v (bipolar supply) z current source oh notes: v z is programmable from -2v to +7v. i ol & i oh programmable from 0 to 16ma. tester impedance z 0 = 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 circuit ac test conditions parameter typ unit input pulse levels v il = 0, v ih = 2.5 v input rise and fall 5 ns input and output reference level 1.5 v output timing reference level 1.5 v dc characteristics (v cc = 3.3v 0.3v, v ss = 0v, t a = -55 c to +125 c) parameter sym conditions units min max input leakage current i li v cc = 3.3, 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 (x 32 mode) i cc cs = v il , oe = v ih , f = 5mhz, v cc = 3.3 120 ma standby current i sb cs = v ih , oe = v ih , f = 5mhz, v cc = 3.3 8 ma output low voltage v ol i ol = 8ma 0.4 v output high voltage v oh i oh = -4.0ma 2.4 v
3 white electronic designs corporation ?phoenix, az ?(602) 437-1520 wms128k8v-xxx ac characteristics (v cc = 3.3v, t a = -55 c to +125 c) parameter symbol -15 -17 -20 -25 -35 units read cycle min max min max min max min max min max read cycle time t rc 15 17 20 25 35 ns address access time t aa 15 17 20 25 35 ns output hold from address change t oh 0000 0ns chip select access time t acs 15 17 20 25 35 ns output enable to output valid t oe 10 11 12 15 20 ns chip select to output in low z t clz 1 5555 5ns output enable to output in low z t olz 1 5555 5ns chip disable to output in high z t chz 1 8 9 10 12 15 ns output disable to output in high z t ohz 1 8 9 10 12 15 ns 1. this parameter is guaranteed by design but not tested. ac characteristics (v cc = 3.3v, t a = -55 c to +125 c) parameter symbol -15 -17 -20 -25 -35 units write cycle min max min max min max min max min max write cycle time t wc 15 17 20 25 35 ns chip select to end of write t cw 13 14 15 20 30 ns address valid to end of write t aw 13 14 15 20 30 ns data valid to end of write t dw 10 11 12 15 18 ns write pulse width t wp 13 14 15 20 30 ns address setup time t as 00 0 0 0 ns address hold time t ah 00 0 0 0 ns output active from end of write t ow 1 55 5 5 5 ns write enable to output in high z t whz 1 8 9 10 10 15 ns data hold time t dh 00 0 0 0 ns 1. this parameter is guaranteed by design but not tested.
4 white electronic designs corporation ?phoenix, az ?(602) 437-1520 wms128k8v-xxx ws32k32-xhx timing waveform - read cycle write cycle - cs controlled write cycle - we controlled 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 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 address data i/o read cycle 1 (cs = oe = v il , we = v ih ) t aa t oh t rc data valid previous data valid
5 white electronic designs corporation ?phoenix, az ?(602) 437-1520 wms128k8v-xxx all linear dimensions are millimeters and parenthetically in inches package 101: 32 lead, ceramic soj package 220: 32 lead, ceramic flat pack all linear dimensions are millimeters and parenthetically in inches
6 white electronic designs corporation ?phoenix, az ?(602) 437-1520 wms128k8v-xxx package 300: 32 pin, ceramic dip, single cavity side brazed all linear dimensions are millimeters and parenthetically in inches
7 white electronic designs corporation ?phoenix, az ?(602) 437-1520 wms128k8v-xxx all linear dimensions are millimeters and parenthetically in inches package 601: 32 pin, rectangular ceramic leadless chip carrier
8 white electronic designs corporation ?phoenix, az ?(602) 437-1520 wms128k8v-xxx lead finish: blank = gold plated leads a = solder dip leads device grade: m = military screened -55 c to +125 c i = industrial -40 c to +85 c c = commercial 0 c to +70 c package: c = 32 pin ceramic .600" dip (package 300) cl = 32 pin rectangular ceramic leadless chip carrier (package 601) dr = 32 lead ceramic soj (package 101) revolutionary fr = 32 lead ceramic flat pack (package 220**) revolutionary access time (ns) improvement mark: low voltage supply 3.3v 10% organization, 128k x 8 sram monolithic white electronic designs corp. ordering information w m s 128k8 v - xxx x x x ** package under developement.
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