D8749HD Microprocessor IC 8 Bit Single Chip HMOS

From the shop's description

The D8749H/D8748H are self-sufficient, 8-bit parallel computers fabricated on single silicon chips using Intel’s advanced N-channel silicon gate HMOS-E process. The family contains 27 I/O lines, an 8-bit timer/counter, on-chip RAM, and on-board oscillator/clock circuits. For systems that require extra capability, the family can be expanded using MCS®.80/MCS®-85 peripherals, These microcomputers are designed to be efficient controllers as well as arithmetic processors. They have extensive bit-handling capability as well as facies for both binary and BCD arithmetic. Efficient usage of program memory results from an instruction set consisting mostly of single-byte instructions and no instructions over 2 bytes in length Features High-performance 11 MHz operation Compatible with 8080/8085 Peripherals Programmable interval timer/event counter Easily Expandable Memory and I/O External and internal interrupts Internal clock generator Two Single Level interrupts 2K x8 bytes of ROM, 128 x 8 bytes of RAM Up to 1.36 us Instruction Cycle: All Instructions 1 or 2 Cycles Single +5 V +10 percent power supply Over 96 Instructions; 70% Single Byte D8049H Datasheet