description the accutek ak5916384s high density memory module is a cmos random access memory organized in 16 me g x 9 bit words. the as - sembly consists of nine 16 me g x 1 drams in plastic soj packages mounted on the front side of a printed circuit board in 30 pad sim (leadless) or 30 pin sip (leaded) configuration. the module is only 0.8 inch high (same height as standard 1 meg modules), making it ideally suited for applications with low height restrictions. the operation of the ak5916384 is identical to nine 16 meg x 1 dynamic rams. for the lower eight bits data input is tied to data output and brought out separately for each device, with common ras , cas and we control. this common i/o feature dictates the use of early-write cycles to prevent contention of d and q. since the write-enable (we ) signal must always go low before cas in a write cycle, read-write and read-modify-write operation is not possible. for the ninth bit, the data input (d 9 ) and the data output (q 9 ) pins are brought out separately and controlled by a separate pcas for that bit. bit nine is generally used for parity. features 16,777,21 6 x 9 bit organization optional 30 pad leadless sim (single in-line module) or 30 pin leaded sip (single in-line package) jedec standard pinout common cas and ras control for the lower eight bits separate pcas control for d 9 and q 9 cas -before-ras refresh downward compatible with ak594096, ak591024, and AK59256 ttl-compatible inputs and outputs ras -only refresh 4096 cycle refresh every 64msec power: 4.45 watt max active (60 ns) 3.96 watt max active (70 ns) 49.5 mwatt max standby operating free air temperature 0 o cto70 o c fast page mode 8 bit version (without parity bit) also available accutek microcircuit corporation ak5916384s / ak5916384g 16,777,216 word by 9 bit cmos dynamic random access memory 1 30 1 front view 30-pin sim 30-pin sip pin nomenclature dq 1 -dq 8 data in/data out d 9 data in q 9 data out a 0 -a 11 address inputs cas , pcas column address strobe ras row address strobe we write enable vcc 5v supply vss ground nc no connect module options leadless sim: ak5916384s leaded sip: ak5916384g pin assignment pin # symbol pin # symbol 1 vcc 16 dq5 2 cas 17 a8 3 dq1 18 a9 4 a0 19 a10 5 a1 20 dq6 6 dq2 21 we 7 a2 22 vss 8 a3 23 dq7 9 vss 24 a11 10 dq3 25 dq8 11 a4 26 q9 12 a5 27 ras 13 dq4 28 pcas 14 a6 29 d9 15 a7 30 vcc functional diagram
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 60 = 60 ns 8 = 8 ns 70 = 70 ns 12 = 12 ns 80 = 80 ns 15 = 15 ns the numbers and coding on this page do not include all varia - tions available but are shown as examples of the most widely used variations. contact accutek if other information is re - quired. 3.525 3.475 3.100 3.090 0.024 0.016 0.325 0.275 0.425 0.375 .100 .060 0.815 0.785 0.815 0.785 0.100 typ 0.100 typ 1 30 1 0.100 typ 0.053 0.047 0.200 max 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: ak5916384sp-70 16 meg x 9, 70 nsec, leadless sim, fast page mode ak5916384gp-60 16 meg x 9, 60 nsec, leaded sip, fast page mode accutek reserves the right to make changes in specifications at any time and without notice. accutek does not assume any responsibil - ity for the use of any circuitry described; no circuit patent licenses are implied. preliminary data sheets contain minimum and maxi - mum limits based upon design objectives, which are subject to change upon full characterization over the specific operating condi - tions. mechanical dimensions inches
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