80C88 CMOS 8-/16-Bit Microprocessor is a high performance 8-/16-bit CMOS CPU manufactured using a self-aligned silicon gate CMOS process (Scaled SAJI IV). It has two operating modes, MINimum for small systems and MAXimum for larger applications such as multiprocessing, allowing user configuration to achieve the highest performance level. It is fully compatible with existing NMOS 8088 hardware and Intersil CMOS peripherals. It is fully software compatible with the 80C86, 8086, and 8088 microprocessors, allowing use of existing software in new designs.
This datasheet describes the Intersil 80C88 high‑performance 8‑/16‑bit CMOS CPU, its features, and compatible hardware. It includes pin‑out diagrams, functional block diagrams, and detailed pin function tables for both minimum and maximum modes.
The document also lists ordering information, package dimensions, electrical characteristics such as clock speed, power consumption, temperature ranges, and memory addressing capability, making it a complete reference for designers integrating the 80C88 into their systems.
| Maximum Clock Frequency | 5 MHz (80C88) / 8 MHz (80C88‑2) |
|---|---|
| Maximum Power Consumption (5 MHz) | 500 µA |
| Maximum Current per MHz | 10 mA/MHz |
| Direct Memory Addressing Capability | 1 Megabyte |
| Data Bus Width | 8‑bit |
| Internal Architecture Width | 16‑bit |
| Operating Temperature Range (Maximum mode) | -40°C to +85°C |
| Operating Temperature Range (Standard package) | 0°C to +70°C |
| Operating Temperature Range (Extended package) | -55°C to +125°C |
The 80C88 runs up to 5 MHz, while the 80C88‑2 version runs up to 8 MHz.
Depending on the package, the 80C88 operates from 0°C to +70°C, -40°C to +85°C, or -55°C to +125°C.
The processor can address up to 1 Megabyte of memory.
Pin 21 is the RESET pin; it must transition LOW to HIGH and stay HIGH for at least four clock cycles.