MK3870/42P-00 is an OEM/tray microcontroller. Frequency ? 4 MHz. Package, 40-pin side-brazed ceramic DIP. Socket, DIP40. Architecture / Microarchitecture.
The MK3870 is a complete 8-bit microcomputer on a single MOS integrated circuit. The 3870 can execute the F8 instruction set of more than 70 com-.