description the accutek ak63232w sram module consists of fast high perfor - mance srams mounted on a low profile, 64 pin sim board. the module utilizes four 28 pin 32k x 8 srams in soj packages and four decoupling capacitor chips on one side of the circuit board. the srams used have common i/o functions and single output en - able functions. also, four separate chip select (ce ) connections are used to independently enable the four bytes. the modules can be supplied in a variety of access time values from 12 nsec to 45 nsec in cmos or bicmos technology. the accutek module is designed for the lowest height off the board, consistent with the availability of commonly available sram soj package configurations. each conforms to jedec - standard sizes and pin-out configurations. this, along with use of two pins for mod - ule memory density identification, pd 0 and pd 1 , minimizes interchangeability and design considerations when changing from one module size to the other in customer applications. features 32,768 x 32 bit organization jedec standardized 64 pin sim format common i/o, single oe functions with four separate chip selects (ce ) low height, 0.600 inch maximum, for mounting in straight-up or angled sim sockets upward compatible with 64k x 32, ak63264w, 256k x 32, ak6322w and 1 meg x 32, ak6321024w designs presence detect, pd 0 and pd 1 for identifying module density fast access times range from 12 nsec bicmos to 45 nsec cmos ttl compatible inputs and outputs single 5 volt power supply - ak63232w single 3.3 volt power supply - ak63232w/3.3 operating temperature range in free air, 0 0 cto70 0 c accutek microcircuit corporation ak63232w 32,768 x 32 bit cmos/bicmos static random access memory pin nomenclature a 0 -a 14 address inputs ce 1 -ce 4 chip enable dq 1 -dq 32 data in/data out oe output enable pd 0 -pd 1 presence detect vcc power supply vss ground we write enable module options leadless sim: ak63232w leaded sip: ak63232g pin assignment functional diagram pin # symbol pin # symbol pin # symbol pin # symbol 1 vss 17 a2 33 ce4 49 a4 2 pd0 18 a9 34 ce3 50 a11 3 pd1 19 dq13 35 nc 51 a5 4 dq1 20 dq5 36 nc 52 a12 5 dq9 21 dq14 37 oe 53 vcc 6 dq2 22 dq6 38 vss 54 a13 7 dq10 23 dq15 39 dq25 55 a6 8 dq3 24 dq7 40 dq17 56 dq21 9 dq11 25 dq16 41 dq26 57 dq29 10 dq4 26 dq8 42 dq18 58 dq22 11 dq12 27 vss 43 dq27 59 dq30 12 vcc 28 we 44 dq19 60 dq23 13 a0 29 nc 45 dq28 61 dq31 14 a7 30 a14 46 dq20 62 dq24 15 a1 31 ce2 47 a3 63 dq32 16 a8 32 ce1 48 a10 64 vss pd0 = open pd1 = open a0 a14 oe we ce1 ce2 ce3 ce4 dq1 dq2 dq3 dq4 dq5 dq6 dq7 dq8 dq1 dq2 dq3 dq4 dq5 dq6 dq7 dq8 ao- a14 oe we ce dq1 dq2 dq3 dq4 dq5 dq6 dq7 dq8 ao- a14 oe we ce dq1 dq2 dq3 dq4 dq5 dq6 dq7 dq8 ao- a14 oe we ce dq1 dq2 dq3 dq4 dq5 dq6 dq7 dq8 ao- a14 oe we ce dq9 dq10 dq11 dq12 dq13 dq14 dq15 dq16 dq17 dq18 dq19 dq20 dq21 dq22 dq23 dq24 dq25 dq26 dq27 dq28 dq29 dq30 dq31 dq32 - 15 1 pin 1 pin 1 pin 1 pin 1
ordering information part number coding interpretation position 12345678 1 product ak = accutek memory 2 type 4 = dynamic ram 5 = cmos dynamic ram 6 = static ram 3 organization/word width 1 = by 1 16 = by 16 4 = by 4 32 = by 32 8 = by 8 36 = by 36 9 = by 9 4 size/bits depth 64 = 64k 4096 = 4 meg 256 = 256k 8192 = 8 meg 1024 = 1 meg 16384 = 16 meg 5 package type g = single in-line package (sip) s = single in-line module (sim) d = dual in-line package (dip) w = .050 inch pitch edge connect z = zig-zag in-line package (zip) 6 special designation p = page mode n = nibble mode k = static column mode w = write per bit mode v = video ram 7 separator - = commercial 0 0 cto+70 0 c m = military equivalent screened (-55 0 c to +125 0 c) i = industrial temperature tested (-45 0 cto+85 0 c) x = burned in 8 speed (first two significant digits) drams srams 50 = 50 ns 8 = 8 ns 60 = 60 ns 12 = 12 ns 70 = 70 ns 15 = 15 ns 80 = 80 ns 20 = 20 ns mechanical dimensions inches 0.600 max 0.050 typ c l c l c l c l 3.585 3.840 3.860 0.125 typ 0.200 max 1 pin 1 pin 1 pin 1 pin 1 0.047 0.053 0.075 0.085 r = 0.062 typ 0.245 0.255 accutek microcircuit corporation business center at newburyport 2 new pasture road, suite 1 newburyport, ma 01950-4054 phone: 978-465-6200 fax: 978-462-3396 email: sales@accutekmicro.com internet: www.accutekmicro.com examples: ak63232w-12 32k x 32, 12 nsec sram sim module accutek reserves the right to make changes in specifications at any time and without notice. accutek does not assume any responsibility for the use of any circuitry described; no circuit patent licenses are implied. preliminary data sheets contain minimum and maximum limits based upon design objectives, which are subject to change upon full characterization over the specific operating conditions. the numbers and coding on this page do not include all variations available but are shown as examples of the most widely used varia - tions. contact accutek if other information is required.
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