Accutek Microcircuit Corporation AK5361024W 1,048,576 Word by 36 Bit CMOS Dynamic Random Access Memory DESCRIPTION The Accutek AK5361024W high density memory module is a CMOS Dynamic RAM organized in 1024K x 36 bit words. The module consists of eight standard 1 Meg x 4 DRAMsin plastic SOJ packages mounted on the front side of a printed circuit board and four 1 Meg x 1 DRAMs in plastic SOJ packages mounted on the back side of a printed circuit board with a low profile height of only 0.875 inch 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 AK5361024W is identical to eight 1 Meg x 4 plus four 1 Meg x 1 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 1Meg x 4 DRAMs, along with a 1 Meg x 1 DRAM with data in tied to data out to form a 9 bit byte. The bank of 36 bits is controlled by the two RAS lines. An eighteen bit data path can be produced by connecting DQ0 to DQ18, DQ1 to DQ19, etc. and alternately strobing RAS0 with RAS2. FEATURES · · · · · · · Single 5 Volt Power Supply · 1024 Refresh Cycles, 16 mSEC · Available in Fast Page Mode and Static Column Mode versions · Available in leadless SIM or leaded ZIP versions · Downward compatible with AK536512W and AK536256W · Upward compatible with AK5362048W, AK5364096W and AK5368192W · Operating free air temperature 00C to 700C 1,048,576 x 36 bit organization Low profile board height of 0.875 inch 72 pad Single In-Line Module Multiple CAS and RAS lines allow x18 or x36 bit widths CAS-before-RAS, RAS-only or hidden refresh Power 7.26 Watt Max Active (60nS) 6.16 Watt Max Active (70 nS) 5.28 Watt Max Active (80 nS) 66 mW Max Standby PIN NOMENCLATURE DQ0 - DQ35 Data In/Data Out A0 - A 9 Address Inputs 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 Leadless SIM: AK5361024W PIN ASSIGNMENT Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Symbol Vss DQ0 DQ18 DQ1 DQ19 DQ2 DQ20 DQ3 DQ21 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 DQ22 DQ5 DQ23 DQ6 DQ24 DQ7 DQ25 A7 NC Vcc A8 A9 NC RAS2 DQ26 DQ8 Presence Detect PD1 PD2 PD3 PD4 -60 Vss Vss NC NC -70 Vss Vss Vss NC -80 Vss Vss NC Vss Pin # 37 38 39 40 41 42 43 44 45 46 47 48 46 50 51 52 53 54 Symbol DQ17 DQ35 Vss CAS0 CAS2 CAS3 CAS1 RAS0 NC NC WE NC DQ9 DQ27 DQ10 DQ28 DQ11 DQ29 Pin # 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 Symbol DQ12 DQ30 DQ13 DQ31 Vcc DQ32 DQ14 DQ33 DQ15 DQ34 DQ16 NC PD1 PD2 PD3 PD4 NC Vss FUNCTIONAL DIAGRAM CAS0 RAS0 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 CAS1 A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 CAS2 RAS2 A0 - A9 RAS D CAS WE Q A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 DQ16 A0 - A9 RAS D CAS WE Q CAS3 A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE DQ18 DQ19 DQ20 DQ21 DQ22 DQ23 DQ24 DQ25 A0 - A9 RAS D CAS WE Q A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE A0 - A9 RAS CAS WE DQ1 DQ2 DQ3 DQ4 OE DQ27 DQ28 DQ29 DQ30 DQ31 DQ32 DQ33 DQ34 A0 - A9 RAS D CAS WE Q WE DQ8 DQ17 DQ26 DQ35 MECHANICAL DIMENSIONS + + 4.250" 0.330" MAX 3.850" 0.875" MAX 0.425" 0.375" + + 0.250" 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 E-Mail: [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.