UPD651 - 4-BIT SINGLE CHIP MICROCOMPUTER
UPD651 Features
* of the J.LCOM-44 family, except that it has two subroutine stack levels to enhance software development. The J.LPD651 executes all 58 instructions of the IlCOM-44 instruction set, and it is available either in a 42-pin Dual-in-line package (IlPD651C), or in a space-saving 52-pin Flat'package (J.LPD6