MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
256KB and 512KB BurstRAM™ Secondary Cache Module for Pentium™
The MCM72BF32SG and MCM72BF64SG are designed to provide a burstable, high performance, 256K/512K L2 cache for the Pentium microprocessor.
The modules are configured as 32K x 72 and 64K x 72 bits in a 160 pin card edge memory module.
Each module uses four of Motorola’s MCM67B518 or MCM67B618 Bi
CMOS BurstRAMs.
All 72 I/Os are series terminated for added noise immunity.
Bursts can be initiated with either address status processor (ADSP) or address status controller (ADSC).
Subsequent burst addresses are generated internal to the BurstRAM by the burst advance (ADV) input pin.
Write cycles are inte...