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.

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.