description the accutek AK5321024N high density memory module is a cmos dynamic ram organized in 1024k x 32 bit words. the mod - ule consists of two standard 1 meg x 16 drams in plastic tsop packages. the assembly has 2 drams mounted on the front side of a printed circuit board in a 72 pad leadless dual row sodim config - uration. this configuration allows socke t-mounting of large quantities of memory in applications where high density and ease of inserting additional memory are important. the operation of the AK5321024N is identical to two 1meg x 16 drams. there are four cas lines and two ras lines. on each bank of 1meg x 32, independent byte control is accomplished by four cas lines. each seperate cas line controls one byte of the 1meg x 16 dram. a sixteen bit data path can be produced by connecting dq 0 to dq 16 ,dq 1 to dq 17 etc. and alternately strobing ras 0 with ras 2 . features 1,048,576 x 32 bit organization 72 pad dual row sodim module multiple cas and ras lines allow x16 or x32 bit widths cas -before-ras , ras -only or hidden refresh operating free air temperature 0 o cto70 o c single 5 volt power supply 1024 refresh cycles, 16 msec available in fast page mode and static column mode versions power 1.76 watt max active (60ns) 1.65 watt max active (70 ns) 1.54 watt max active (80 ns) 11 mw max standbyavailable additional options available 2 meg x 32 version, ak5322048n accutek microcircuit corporation AK5321024N 1,048,576 word by 32 bit cmos dynamic random access memory 171 272 front side back side pin nomenclature dq 0 -dq 31 data in/data out a 0 -a 9 address inputs cas 0 - cas 3 column address strobe ras 0 , ras 2 row address strobe we write enable pd 0 -pd 6 presence detect vcc 5v supply vss ground nc no connect module options leadless sodim: AK5321024N pin assignment pin # symbol pin # symbol pin # symbol pin # symbol 1 vss 19 nc 37 dq16 55 nc 2 dq0 20 nc 38 dq17 56 dq24 3 dq1 21 dq8 39 vss 57 dq25 4 dq2 22 dq9 40 cas 0 58 dq26 5 dq3 23 dq10 41 cas 2 59 dq28 6 dq4 24 dq11 42 cas 3 60 dq27 7 dq5 25 dq12 43 cas 1 61 vcc 8 dq6 26 dq13 44 ras 0 62 dq29 9 dq7 27 dq14 45 nc 63 dq30 10 vcc 28 a7 46 nc 64 dq31 11 pd0 29 nc 47 we 65 nc 12 a0 30 vcc 48 nc 66 pd1 13 a1 31 a8 49 dq18 67 pd2 14 a2 32 a9 50 dq19 68 pd3 15 a3 33 nc 51 dq20 69 pd4 16 a4 34 ras 2 52 dq21 70 pd5 17 a5 35 dq15 53 dq22 71 pd6 18 a6 36 nc 54 dq23 72 vss presence detect - access time pd 0 pd 1 pd 2 pd 3 pd 4 pd 5 pd 6 -60 nc vss vss nc nc nc nc -70 nc vss vss nc vss nc nc
functional diagram mechanical dimensions order 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 = b y 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 the numbers and coding on this page do not include all variations avail - able, but are shown as examples of the most widely used variations. contact accutek if other information is required. position 12345678 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 n = dual row sodim 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 12 = 12 ns 70 = 70 ns 15 = 15 ns 80 = 80 ns 20 = 20ns accutek microcircuit corporation 5 new pasture road newburyport, ma 01950-4040 phone: 978-465-6200 fax: 978-462-3396 email: sales@accutekmicro.com internet: www.accutekmicro.com 0.700" 2.350" 0.158" 0.095" 0.100" 0.040" 2.033" 0.197" 0.300" 0.250" 0.070" 1.000" dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 dq8 dq9 dq10 dq11 dq12 dq13 dq14 dq15 dq16 dq17 dq18 dq19 dq20 dq21 dq22 dq23 dq24 dq25 dq26 dq27 dq28 dq29 dq30 dq31 dq0 dq1 dq2 dq3 dq4 dq5 dq6 dq7 dq8 dq9 dq10 dq11 dq12 dq13 dq14 dq15 dq16 dq17 dq18 dq19 dq20 dq21 dq22 dq23 dq24 dq25 dq26 dq27 dq28 dq29 dq30 dq31 accutek reserves the right to make changes in specifications at any time and withut 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.
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