MCM64PE32

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MCM64PE32/D Advance Information 256K/512K Pipelined BurstRAM™ Secondary Cache Module for Pentium™ The MCM64PE32 (256K) and MCM64PE64 (512K) are designed to provide a burstable, high performance, L2 cache for the Pentium microprocessor in conjunction with Intel’s Triton II chip set. The MCM64PE32 is configured as 32K x 64 bits and the MCM64PE64 is configured as 64K x 64 bits. Both are packaged in a 160 pin card edge memory module. The MCM64PE32 module uses Motorola’s 3.3 V 32K x 32 BurstRAMs and one Motorola 5 V 32K x 8 FSRAM for the tag RAM. The MCM64PE64 module uses Motorola’s 3.3 V 64K x 32 BurstRAMs and one Motorola 5 V 32K x 8 FSRAM for the tag RAM. Bursts can be initiated with either address status processor (ADSP) or cache address status (CADS). Subsequent burst addresses are generated internal to the BurstRAM by the cache burst advance (CADV) input pin. Write cycles are internally self timed and are initiated by the rising edge of the clock (CLK0) input. Eight write enables are provided for byte write control. PD0 – PD3 map into the Triton II chip set for auto–configuration of the cache control. Pentium–Style Burst Counter on Chip Pipelined Data Out 160 Pin Card Edge Module Address Pipeline Supported by ADSP Disabled with Ex All Cache Data and Tag I/Os are TTL Compatible Three State Outputs Byte Write Capability Fast Module Clock Rate: 66 MHz Fast SRAM Access Times:15 ns ...