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| Accutek Microcircuit Corporation DESCRIPTION The Accutek AK53220482W high density memory module is a CMOS dynamic RAM organized in 2048 x 32 bit words. The module consists of sixteen standard 1 Meg x 4 DRAMs in plastic SOJ packages. The assembly has eight drams mounted on each side of a printed circuit board in a 72 pad leadless SIM configuration. This configuration allows socket-mounting of large quantities of memory in applications where high density and ease of inserting additional memory are important. The operation of the AK5322048 is identical to sixteen 1Meg x 4 Drams. There are four CAS lines and four RAS lines. On each bank of 1Meg x 32, independent byte control is accomplished by the four CAS lines, where each seperate CAS line controls two 1Meg x 4 Drams. Two banks of 32 bits are controlled by the two pairs of RAS lines. A sixteen bit data path can be produced by connecting DQ1 to DQ17, DQ2 to DQ18, and alternately strobing RAS0 with RAS1 and RAS2 with RAS3. + AK5322048W 2,097,152 Word by 32 Bit CMOS Dynamic Random Access Memory + * Power 5.32 Watt Max Active (60nS) 4.44 Watt Max Active (70 nS) 3.79 Watt Max Active (80 nS) 88 mW Max Standby * Available in leadless SIM or leaded Zip versions * Downward compatible with AK5321024, AK532512 and AK532256 * Upward compatible with AK5324096 and AK5328192 FEATURES * 2,097,152 x 32 bit organization * 72 pad Single In-Line Module * Multiple CAS and RAS lines allow x16 or x32 bit widths * CAS-before-RAS, RAS-only or hidden refresh * Operating free air temperature 0oC to 70oC * Single 5 Volt Power Supply * 2048 Refresh Cycles * Available in Fast Page Mode EDO versions ADDITIONAL OPTIONS AVAILABLE * * * * * 256K x 32 Version, AK532256 512K x 32 version, AK532512 1 Meg x 32 version, AK5321024 4 Meg x 32 version, AK5324096 8 Meg x 32 version, AK5328192 PIN NOMENCLATURE DQ0 - DQ31 A0 - A9 CAS0 - CAS3 RAS0 - RAS3 WE PD1 - PD4 Vcc Vss NC Data In/Data Out Address Inputs Column Address Strobe Row Address Strobe Write Enable Presence Detect 5V Supply Ground No Connect PIN ASSIGNMENT Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Symbol Vss DQ0 DQ16 DQ1 DQ17 DQ2 DQ18 DQ3 DQ19 Vcc NC A0 A1 A2 A3 A4 A5 A6 Pin # 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Symbol NC DQ4 DQ20 DQ5 DQ21 DQ6 DQ22 DQ7 DQ23 A7 NC Vcc A8 A9 RAS3 RAS2 NC NC Pin # 37 38 39 40 41 42 43 44 45 46 47 48 46 50 51 52 53 54 Symbol NC NC Vss CAS0 CAS2 CAS3 CAS1 RAS0 RAS1 NC WE NC DQ8 DQ24 DQ9 DQ25 DQ10 DQ26 Pin # 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 Symbol DQ11 DQ27 DQ12 DQ28 Vcc DQ29 DQ13 DQ30 DQ14 DQ31 DQ15 NC PD1 PD2 PD3 PD4 NC Vss MODULE OPTIONS Leadless SIM: AK5322048W Leaded ZIP: AK5322048Z Presence Detect -1 Meg x 32 PD1 PD2 PD3 PD4 -60 Vss Vss NC NC -70 Vss Vss Vss NC -80 Vss Vss NC Vss Presence Detect - 2 Meg x 32 PD1 PD2 PD3 PD4 -60 NC NC NC NC -70 NC NC Vss NC -80 NC NC NC Vss FUNCTIONAL DIAGRAM RAS1 RAS3 A0 - A9 RAS CAS WE OE A0 - A9 RAS DQ0 - DQ3 CAS WE OE A0 - A9 RAS DQ0 - DQ3 CAS WE OE A0 - A9 RAS DQ0 - DQ3 CAS WE OE DQ12 - DQ15 DQ16 - DQ19 DQ20 - DQ23 DQ24 - DQ27 A0 - A9 RAS CAS DQ0 - DQ3 WE OE A0 - A9 RAS CAS DQ0 - DQ3 WE OE A0 - A9 RAS CAS DQ0 - DQ3 WE OE A0 - A9 RAS CAS DQ0 - DQ3 WE OE A0 - A9 RAS CAS DQ0 - DQ3 WE OE A0 - A9 RAS CAS DQ0 - DQ3 WE OE A0 - A9 RAS CAS DQ0 - DQ3 WE OE RAS0 CAS0 CAS1 RAS2 CAS2 A0 - A9 CAS3 MECHANICAL DIMENSIONS 4.250" 3.985" 0.330" MAX 1.000" MAX 0.425" 0.375" + + 0.250" 0.080" 0.125" CC LL CC LL 0.050" TYP 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 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. WE A0 - A9 RAS CAS DQ0 - DQ3 WE OE DQ28 - DQ31 DQ4 - DQ7 DQ8 - DQ11 DQ0 - DQ3 A0 - A9 RAS DQ0 - DQ3 CAS WE OE A0 - A9 RAS DQ0 - DQ3 CAS WE OE A0 - A9 RAS DQ0 - DQ3 CAS WE OE A0 - A9 RAS DQ0 - DQ3 CAS WE OE DQ0 - DQ3 |
Price & Availability of AK5321024
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