1 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com ws512k48-xg4wx hi-reliability product 512kx48 sram module advanced* october 2000 rev. 2 features n access times 17, 20, 25, 35ns n packaging: ? 116 lead, 40.0mm hermetic cqfp (package 504) n commercial, industrial and military temperature ranges n 5 volt power supply n low power cmos n organized as 512k x 48, data width is user configurable. n 2v data retention devices available (ws512k48l-xxx low power version) n ttl compatible inputs and outputs n built-in decoupling caps and multiple ground pins for low noise operation n weight ws512k48-xg4wx - 20 grams typical * this data sheet describes a product that may or may not be under development and is subject to change or cancellation without notice. pin configuration for ws512k48-xg4wx 1 512k x 8 8 i/o 0-7 cs 1 2 512k x 8 8 i/o 8-15 cs 2 8 i/o... cs x 6 512k x 8 8 i/o 40-47 cs 6 a 0-18 oe we 1 we 2 we x we 6 ..... block diagram 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 116 115 114 113 112 111 110 109 108 107 106 105 104 103 i/o 3 i/o 4 i/o 5 i/o 6 i/o 7 gnd i/o 8 i/o 9 i/o 10 i/o 11 i/o 12 i/o 13 i/o 14 i/o 15 gnd i/o 16 i/o 17 i/o 18 i/o 19 i/o 20 i/o 21 i/o 22 i/o 23 gnd i/o 24 i/o 25 i/o 26 i/o 27 i/o 28 i/o 29 i/o 30 i/o 31 v cc we 3 cs 3 nc nc a 18 a 17 a 16 a 15 we 4 cs 4 oe cs 5 we 5 a 14 a 13 a 12 a 11 a 10 nc cs 6 we 6 v cc i/o 32 i/o 33 i/o 34 nc nc nc nc nc gnd nc nc nc nc nc nc nc nc gnd i/o 47 i/o 46 i/o 45 i/o 44 i/o 43 i/o 42 i/o 41 i/o 40 gnd i/o 39 i/o 38 i/o 37 i/o 36 i/o 35 i/o 2 i/o 1 i/o 0 v cc we 2 cs 2 nc a 0 a 1 a 2 a 3 a 4 we 1 cs 1 nc nc nc a 5 a 6 a 7 a 8 a 9 nc nc nc v cc nc nc nc 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 top view i/o 0-47 data inputs/outputs a 0-18 address inputs we 1-6 write enables cs 1-6 chip selects oe output enable v cc power supply gnd ground nc not connected pin description
2 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com ws512k48-xg4wx 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 7.0 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 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 operating temp. (ind.) t a -40 +85 c dc characteristics (v cc = 5.0v, t a = -55 c to +125 c) parameter sym conditions units min max input leakage current i li v cc = 5.5, v in = gnd to v cc 10 m a output leakage current i lo cs = v ih , oe = v ih , v out = gnd to v cc 10 m a operating supply current i cc cs = v il , oe = v ih , f = 5mhz, vcc = 5.5 990 ma standby current i sb cs = v ih , oe = v ih , f = 5mhz, vcc = 5.5 90 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 capacitance (t a = +25 c) parameter symbol conditions max unit oe capacitance c oe v in = 0 v, f = 1.0 mhz 100 pf we capacitance c we v in = 0 v, f = 1.0 mhz 20 pf cs capacitance c cs v in = 0 v, f = 1.0 mhz 20 pf data i/o capacitance c i/o v i/o = 0 v, f = 1.0 mhz 20 pf address input capacitance c ad v in = 0 v, f = 1.0 mhz 100 pf this parameter is guaranteed by design but not tested. data retention characteristics (t a = -55 c to +125 c) parameter symbol conditions units min max data retention supply voltage v dr cs 3 v cc -0.2v 2.0 5.5 v data retention current i ccdr1 v cc = 3v 42 ma low power data retention i ccdr2 v cc = 3v 24 ma current (ws512k48l-xxx) * also available in low power version, please call factory for information.
3 white electronic designs corporation ? (602) 437-1520 ? www.whiteedc.com ws512k48-xg4wx parameter symbol -17 -20 -25 -35 units read cycle 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 00 00ns 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 33 33ns output enable to output in low z t olz 1 00 00ns chip disable to output in high z t chz 1 10 12 12 20 ns output disable to output in high z t ohz 1 10 12 12 20 ns 1. this parameter is guaranteed by design but not tested. ac characteristics (v cc = 5.0v, t a = -55 c to +125 c) ac characteristics (v cc = 5.0v, t a = -55 c to +125 c) parameter symbol -17 -20 -25 -35 units write cycle 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 15 20 25 ns address valid to end of write t aw 15 15 20 25 ns data valid to end of write t dw 10 12 15 20 ns write pulse width t wp 14 15 20 25 ns address setup time t as 0 000ns address hold time t ah 0 000ns output active from end of write t ow 1 3 334ns write enable to output in high z t whz 1 10 12 15 20 ns data hold time t dh 0 000ns 1. this parameter is guaranteed by design but not tested. 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 w . 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 = 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.whiteedc.com ws512k48-xg4wx 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 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 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 ? (602) 437-1520 ? www.whiteedc.com ws512k48-xg4wx 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 type: g4w = 116 lead 40mm ceramic quad flat pack, cqfp (package 504) access time (ns) improvement mark: blank = standard power l = low power data retention organization, 512k x 48 data width user configurable sram white electronic designs corp. ordering information package 504: 116 lead, ceramic quad flat pack, cqfp (g4w) all linear dimensions are millimeters and parenthetically in inches 38 (1.50) ref 4 places 0.38 (0.015) 0.08 (0.003) 68 places 1.27 (0.050) ref 5.1 (0.200) 0.25 (0.010) 4 places 39.6 (1.56) 0.38 (0.015) sq 12.7 (0.500) 0.5 (0.020) 4 places 5.1 (0.200) max 0.25 (0.010) 0.05 (0.002) 1.27 (0.050) 0.1 (0.005) pin 1 identifier pin 1 w s 512k48 x - xxx g4w x
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