M66221SP Datasheet | Mitsubishi Electric

MITSUBISHI MITSUBISHI 〈DIGITAL 〈DIGITAL ASSP ASSP 〉 〉 M66221SP/FP M66221SP/FP × 9-BIT MAIL-BOX 256256 × 9-BIT MAIL-BOX DESCRIPTION The M66221 is a mail box that incorporates a plete CMOS shared memory cell of 256 × 9-bit configuration using high-performance silicon gate CMOS process technology, and is equipped with two access ports of A and B. Access ports A and B are equipped with independent addresses CS, WE and OE control pins and I/O pins to allow independent and asynchronous read/write operations from/to shared memory individually. This product also incorporates a port adjustment arbitration function in address contention from both ports. PIN CONFIGURATION (Top view) CHIP SELECT...