AKAI MB8843 554M

AKAI MB8843 554M integrated circuit, which is a vintage 4-bit single-chip NMOS microcomputer. These chips were commonly used as system controllers in Akai audio equipment from the 1980s, such as the GX-F91 cassette deck.

Technical Details

• Architecture: 4-bit NMOS Single-Chip Microcomputer.
• Memory: Typically contains up to 2K x 8-bit mask ROM (program memory) and 128 x 4-bit static RAM (data memory).
• Package: 42-pin plastic Dual In-line Package (DIP).
• Clock: Operates with a maximum clock speed of 4MHz to 6MHz.
• Features: Includes approximately 37 I/O lines, an 8-bit timer/counter, and a clock generator.