M66223FP Datasheet, PDF (1/4 Pages) Renesas Technology Corp – Mail Box That Incorporates a Complete CMOS Shared Memory Cell

M66223FP
4096 × 16-Bit Mail Box
REJ03F0248-0200
Rev.2.00
Sep 14, 2007
Description
The M66223 is a mail box that incorporates a complete CMOS shared memory cell of 4096 × 16-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.
Features
• Memory configuration of 4096 words × 16 bits
• Complete asynchronous accessibility from A and B
• Built-in port arbitration function
• 5 V single power supply
• Not Ready output pin is provided (open drain output)
• TTL direct-coupled I/O
• 3-state output for I/O pins
• Built-in 2-input NAND gate for public use
Application
Inter-MPU data transfer memory, buffer memory for image processing system.
REJ03F0248-0200 Rev.2.00 Sep 14, 2007
Page 1 of 3