Accutek Microcircuit Corporation AK5321024W 1,048,576 Word by 32 Bit CMOS Dynamic Random Access Memory DESCRIPTION The Accutek AK5321024W high density memory module is a CMOS Dynamic RAM organized in 1024K x 32 bit words. The module consists of eight standard 1 Meg x 4 DRAMs in plastic SOJ packages. The assembly has eight drams mounted on the front surface of a printed circuit board with a low profile height of only 0.875" in a 72 pin 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 AK5321024W is identical to eight 1 Meg x 4 DRAMs. There are four CAS lines and two RAS lines. Independent byte control is accomplished by four CAS lines. Each separate CAS line controls two of the 1 Meg x 4 DRAMs to form an 8 bit byte. The bank of 32 bits is controlled by the two RAS lines. A sixteen bit data path can be produced by connecting DQ0 to DQ16, DQ1 to DQ17, etc. and alternately strobing RAS0 with RAS2. + + 1 · · · · Available in Fast Page Mode and EDO Available in leadless SIM or leaded ZIP versions Downward compatible with AK532512 and AK532256 Upward compatible with AK5322048, AK5324096 and AK5328192 · Operating free air temperature 00C to 700C FEATURES · · · · · 1,048,576 x 32 bit organization Low profile board height of 0.875 inch 72 pad Single In-Line Module Multiple CAS and RAS lines allow x16 or x32 bit widths Power 5.28 Watt Max Active (60nS) 4.40 Watt Max Active (70 nS) 44 mW Max Standby · CAS-before-RAS, RAS-only or hidden refresh · Single 5 Volt Power Supply · 1024 Refresh Cycles, 16 mSEC PIN NOMENCLATURE A0 - A 9 Address Inputs DQ0 - DQ31 Data In/Data Out CAS0 - CAS3 Column Address Strobe RAS0 & RAS2 Row Address Strobe WE Write Enable PD1 - PD4 Presence Detect Vcc 5v Supply Vss Ground NC No Connect MODULE OPTIONS 72 ADDITIONAL OPTIONS AVAILABLE · · · · · 256K x 32 version, AK532256 512K x 32 version, AK532512 2 Meg x 32 version, AK5322048 4 Meg x 32 version, AK5324096 8 Meg x 32 version, AK5328192 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 Presence Detect Leadless SIM: AK5321024W PD1 PD2 PD3 PD4 -60 Vss Vss NC NC -70 Vss Vss Vss NC Symbol NC DQ4 DQ20 DQ5 DQ21 DQ6 DQ22 DQ7 DQ23 A7 NC Vcc A8 A9 NC 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 NC 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 A0 - A9 RAS CAS DQ0 - DQ3 WE OE DQ24 - DQ27 A0 - A9 RAS CAS DQ0 - DQ3 WE OE DQ20 - DQ23 A0 - A9 RAS CAS DQ0 - DQ3 WE OE DQ16 - DQ19 A0 - A9 RAS CAS DQ0 - DQ3 WE OE DQ12 - DQ15 A0 - A9 RAS CAS DQ0 - DQ3 WE OE DQ8 - DQ11 A0 - A9 RAS CAS DQ0 - DQ3 WE OE DQ4 - DQ7 A0 - A9 RAS CAS DQ0 - DQ3 WE OE DQ0 - DQ4 OE OE CAS3 OE OE RAS2 CAS2 OE OE CAS1 OE OE A0 - A9 RAS0 CAS0 WE 10 A0 - A9 RAS CAS DQ0 - DQ3 WE OE DQ28 - DQ31 FUNCTIONAL DIAGRAM MECHANICAL DIMENSIONS 4.250" 0.200" MAX 3.985" 0.875" MAX + 0.425" 0.375" + 72 0.250" 1 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 0.050" TYP 0.125" CL CL CL CL 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.