MCM321024

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MCM321024/D Advance Information MCM321024 PIN ASSIGNMENT TOP VIEW 72 LEAD SIMM — CASE TBD NC PD3 PD0 DQ0 DQ1 DQ2 DQ3 VCC A7 A8 A9 DQ4 DQ5 DQ6 DQ7 W A14 E1 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 NC PD2 VSS PD1 DQ8 DQ9 DQ10 DQ11 A0 A1 A2 DQ12 DQ13 DQ14 DQ15 VSS A15 E2 1M x 32 Bit Fast Static RAM Module The MCM321024 is an 32M bit static random access memory module organized as 1,048,576 words of 32 bits. The module is a 72–lead single in–line memory module (SIMM) consisting of eight MCM6249 fast static RAMs packaged in 32–lead SOJ packages and mounted on a printed circuit board along with sixteen decoupling capacitors. The MCM6249 is a high performance CMOS fast static RAM organized as 1,048,576 words of 4 bits. Static design eliminates the need for external clocks or timing strobes, while CMOS circuitry reduces power consumption and provides for greater reliability. The MCM321024 is equipped with output enable (G) and four separate byte enable (E1 – E4) inputs, allowing for greater system flexibility. The G input, when high, will force the outputs to high impedance. Ex high will do the same for byte x. PD0 – PD3 are reserved for density identification. PD0 and PD2 are connected to ground. These pins can be used to identify the density of the memory module. Single 5 V ± 10% Power Supply Fast Access Time: 20/25 ns Three–State Outputs Ful...