GENERAL DESCRIPTION

The MSM6422 is a low-power, single-chip device implemented in complementary metal-oxide semiconductor technology.

The MSM6422 can be used in place of logic ICs configured around a main CPU, or for small-scale systems such as home electronic equipment.

FEATURES

• ROM : 2048 words x 8 bits

• RAM : 64 words x 4 bits

• I/O port

Input-output port : 4 ports x 4 bits (pseudo bidirectional configuration)

1 port x 2 bits (pseudo bidirectional configuration)

Input port : 1 port x 1 bit (combined use with an interrupt input)

• Instructions : 63

• Two interrupt sources (1 internal, 1 external)

• Power down features

• Minimum instruction execution time : 952 ns @ 4.2 MHz clock

• Crystal and ceramic oscillation

• Single 5 V power supply

• Package options:

24-pin plastic DIP (DIP24-P-600-2.54) : (Product name : MSM6422-xxRS)

24-pin plastic SOP (SOP24-P-430-1.27-K) : (Product name : MSM6422-xxGS-K)

xx indicates a code number.