address inputs a0~a18 data input/output d0~d31 chip select cs1~4 presence detect pd0~3 write enable we output enable oe no connect nc power (+5v) v cc ground gnd description features issue 1.1 : january 1999 sys32512zk/lk - 012/015/017 512k x 32 sram module package details plastic 72 pin simm plastic 72 pin zip ? very fast access times of 012/015/017 ns. ? 72 pin zip, simm package ? 5 volt supply 10%. ? low power dissipation: operational 4.18 w (maximum). standby (ttl) 220 mw (maximum). ? completely static operation. ? on-board supply decoupling capacitors. ? upgrade path to sys321000zk/lk. block diagram pin definition pin functions nc pd3 pd0 d0 d1 d2 d3 vcc a7 a8 a9 d4 d5 d6 d7 we a14 cs1 cs3 a16 gnd d16 d17 d18 d19 a10 a11 a12 a13 d20 d21 d22 d23 gnd nc nc 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 63 64 68 70 72 nc pd2 gnd pd1 d8 d9 d10 d11 a0 a1 a2 d12 d13 d14 d15 gnd a15 cs2 cs4 a17 oe d24 d25 d26 d27 a3 a4 a5 vcc a6 d28 d29 d30 d31 a18 nc 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 top view pd1=gnd pd0=pd2=pd3=open nc nc pd2 pd3 gnd pd0 pd1 d0 d8 d1 d9 d2 d10 d3 d11 vcc a0 a7 a1 a8 a2 a9 d12 d4 d13 d5 d14 d6 d15 d7 gnd we a15 a14 cs2 cs1 cs4 cs3 a17 a16 oe gnd d24 d16 d25 d17 d26 d18 d27 d19 a3 a10 a4 a11 a5 a12 vcc a13 a6 d20 d28 d21 d29 d22 d30 d23 d31 gnd a18 nc nc nc 37 38 39 40 41 42 43 44 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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 simm zip 512k x 8 cs1 cs2 cs3 cs4 we oe sram a0 - a18 d0 - d7 d8 - d15 d16 - d23 d24 - d31 512k x 8 sram 512k x 8 sram 512k x 8 sram the sys32512zk/lk is plastic 16mbit static ram module housed in a 72 pin plastic simm, zip package organised as 512k x 32. the module utilises four fast 512k x 8 srams housed in soj packages, mounted on one side of an fr4 epoxy substrate to achieve a very high density module. the module has four chip selects, which when used correctly allow reading and writing to individual bytes or words. the pins pd0-3, are used to identify module memory density in applications where alternative modules can be interchanged. 11403 west bernado court, suite 100, san diego, ca 92127. tel no: (619) 674 2233, fax no: (619) 674 2230
issue 1.1 : january 1999 sys32512zk/lk - 012/015/017 2 package information dimensions in mm plastic 72 pin zip ordering information plastic 72 pin simm sys32512 zk/lki - 012 speed 012 = 12 ns 015 = 15 ns 017 = 17 ns temperature range blank = commercial temp. i = industrial temp. package zk = plastic 72 pin zip lk = plastic 72 pin simm organisation 32512 = 512k x 32 memory type sys = static ram 97.79 max 2.54 typ. 2.54 typ. 4.40 max 14.61 max. 6.35 typ. 15.00 max. 108.20 max. 5.25 max 1.27 typ. 6.35 typ. note : although this data is believed to be accurate, the informtion contained herein is not intended to and does not create any warranty of merchantibility or fitness for a particular purpose. our products are subject to a constant process of development. data may be changed at any time without notice. products are not authorised for use as critical components in life support devices without the express written approval of a company director.
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