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MITSUBISHI MITSUBISHI 〈DIGITAL 〈DIGITAL ASSP ASSP 〉 〉
M66222SP/FP M66222SP/FP
× 8-BIT 2 MAIL-BOX 128128 × 8-BIT × 2× MAIL-BOX
DESCRIPTION
The M66222 is a mail box that incorporates two complete CMOS shared memory cells of 128 × 8-bit configuration using highperformance silicon gate CMOS process technology, and are 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 individually. This product exclusively performs a write operation from A port and a read operation from B port for one memory, and a read operation from A port and a write operation from B port for the other memory.