DESCRIPTION Accutek Microcircuit Corporation AK532512W 524,288 Word by 32 Bit CMOS Dynamic Random Access Memory The Accutek AK532512W high density memory module is a CMOS dynamic RAM organized in 512K x 32 bit words. The module consists of sixteen standard 256K 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 AK532512W is identical to sixteen 256K x 4 Drams. There are four CAS lines and four RAS lines. On each bank of 256K x 32, independent byte control is accomplished by the four CAS lines. Each seperate CAS line controls four 256K 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. 1 72 · Power 4.00 Watt Max Active (60nS) 3.56 Watt Max Active (70 nS) 3.124 Watt Max Active (80 nS) 88 mW Max Standby · Available in leadless SIM or leaded Zip versions FEATURES · Downward compatible with AK532256 · 524,288 x 32 bit organization · Upward compatible with AK5321024, AK5322048, AK5324096 and AK5328192 · 72 pin Single In-Line Module · Multiple CAS and RAS lines allow x16 or x32 bit widths · CAS-before-RAS Refresh, RAS-only Refresh or Hidden refresh · Operating free air temperature 0oC to 70oC ADDITIONAL OPTIONS AVAILABLE · 256K x 32 version, AK532256 · 1 Meg x 32 version, AK5321024 · Single 5 Volt Power Supply · 2 Meg x 32 version, AK5322048 · 512 Refresh Cycles, 8mSEC · 4 Meg x 32 version, AK5324096 · Available in Fast Page Mode and EDO · 8 Meg x 32 version, AK5328192 PIN NOMENCLATURE PIN ASSIGNMENT A0 - A8 Address Inputs DQ1 - DQ32 Data In/Data Out CAS0 - CAS3 Column Address Strobe RAS0 - RAS3 Row Address Strobe WE Write Enable PD1 - PD4 Presence Detect Vcc 5v Supply Vss Ground NC No Connect PIN # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 MODULE OPTIONS Leadless SIM: AK532512W Leaded ZIP: AK532512Z SYMBOL Vss D1 DQ17 DQ2 DQ18 DQ3 DQ19 DQ4 DQ20 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 DQ5 DQ21 DQ6 DQ22 DQ7 DQ23 DQ8 DQ24 A7 NC Vcc A8 NC RAS3 RAS2 NC NC Presence Detect PD1 PD2 PD3 PD4 -60 NC Vss NC NC -70 NC Vss Vss NC -80 NC Vss NC Vss PIN # 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 SYMBOL NC NC Vss CAS0 CAS2 CAS3 CAS1 RAS0 RAS1 NC WE NC DQ9 DQ25 DQ10 DQ26 DQ11 DQ27 PIN # 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 SYMBOL DQ12 DQ28 DQ13 DQ29 Vcc DQ30 DQ14 DQ31 DQ15 DQ32 DQ16 NC PD1 PD2 PD3 PD4 NC Vss FUNCTIONAL DIAGRAM MECHANICAL DIMENSIONS 4.250" 0.330" MAX 3.985" 1.000" MAX 0.425" 0.375" 0.250" 1 72 0.080" 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: [email protected] Internet: www.accutekmicro.com 0.125" CL CL CL CL 0.050" TYP 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.