MSM63P238 Datasheet PDF - Oki Electric Industry

GENERAL DESCRIPTION
The MSM63P238 is a CMOS 4-bit microcontroller with a built-in POCSAG (Post Office Code Standardization Advisory Group) decoder, which employs Okis original nX-4/250 CPU core. The MSM63P238 is a one-time-programmable ROM-version product having one-time PROM (OTP) as internal program memory.
The specifications of the MSM63P238 are equal to those of the MSM63238 except for electrical characteristics, packaging (only 80-pin flat package is available for the MSM63P238), and some functions.