Accutek Microcircuit Corporation AK5362048BW 2,097,152 Word by 36 Bit CMOS Dynamic Random Access Memory DESCRIPTION The Accutek AK5362048BW high density memory module is a CMOS dynamic RAM organized in 2048K x 36 bit words. The module consists of four standard 1 Meg x 16 bits DRAMs and two 1 Meg x 4 bit Quad CAS DRAM in plastic SOJ packages. The assembly has 3 DRAMs mounted on each side of a printed circuit board in a 72 pad leadless SIM configuration. 1 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 AK5362048BW is identical to sixteen 1 Meg x 4 plus eight 1 Meg x 1 DRAMs. There are four CAS lines and two RAS lines. On each bank of 1 Meg x 36, independent byte control is accomplished by four CAS lines. Each seperate CAS line controls one byte of the 1 Meg x 16 plus a parity bit in the QUAD CAS DRAM. FEATURES · 2,097,152 x 36 bit organization 72 · Power 2.125 Watt Max Active (50nS) 1.975 Watt Max Active (60 nS) 1.825 Watt Max Active (70 nS) 30 mW Max Standby · Downward compatible with AK5361024W, AK536512W and AK536256W · 72 pad Single In-Line Module · CAS-before-RAS, RAS-only or hidden refresh · Upward compatible with AK5364096W and AK5368192W · Operating free air temperature 0oC to 70oC ADDITIONAL OPTIONS AVAILABLE · Single 5 Volt Power Supply · 1024 Refresh Cycles, 16 mSEC 1 Meg x 32 version, AK5321024BW · Available in Fast Page Mode and EDO 1 Meg x 36 version, AK5361024BW 2 Meg x 32 version, AK5322048BW PIN NOMENCLATURE PIN ASSIGNMENT A0 - A9 Address Inputs DQ0 - DQ35 Data In/Data Out W Write Enable RAS0 - RAS3 Row Address Strobe CAS0 - CAS3 Column Address Strobe PD1 - PD4 Presence Detect Vss Ground Vcc 5v Supply 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: AK5362048BW 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 RAS3 RAS2 DQ26 DQ8 Presence Detect PD1 PD2 PD3 PD4 -50 NC NC Vss Vss -60 NC NC NC NC -70 NC NC Vss NC PIN # 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 SYMBOL DQ17 DQ35 Vss CAS0 CAS2 CAS3 CAS1 RAS0 RAS1 NC W 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 PD1 PD3 PD4 NC Vss RAS2 RAS3 FUNCTIONAL DIAGRAM MECHANICAL DIMENSIONS 4.250" 3.985" .125" DIA TOOLING HOLE 0.330" MAX .750" 0.400" 0.250" 72 1 0.050" TYP 0.125" 0.080" CL CL 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 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.