INTRODUCTION

The following Functional Description describes the base architecture of the M80C186XL. The M80C186XL is a very high integration 16-bit microprocessor. It combines 15–20 of the most common microprocessor system components onto one chip. The M80C186XL is object code compatible with the 8086/8088 microprocessors and adds 10 new instruction types to the 8086/8088 instruction set.

■ Low Power, Full Static Version of M80C186

■ Operation Modes:

— Enhanced Mode

— DRAM Refresh Control Unit

— Power-Save Mode

— Direct Interface to 80C187

— Compatible Mode

— NMOS 80186 Pin-for-Pin Replacement for Non-Numerics Applications

■ Integrated Feature Set

— Static, Modular CPU

— Clock Generator

— 2 Independent DMA Channels

— Programmable Interrupt Controller

— 3 Programmable 16-Bit Timers

— Dynamic RAM Refresh Control Unit

— Programmable Memory and Peripheral Chip Select Logic

— Programmable Wait State Generator

— Local Bus Controller

— Power-Save Mode

— System-Level Testing Support (High Impedance Test Mode)

■ Completely Object Code Compatible with Existing 8086/8088 Software and Has 10 Additional Instructions over 8086/8088

■ Speed Versions Available

— 20 MHz (M80C186XL20)

— 16 MHz (M80C186XL16)

— 12.5 MHz (M80C186XL12)

— 10 MHz (M80C186XL)

■ Direct Addressing Capability to 1 MByte Memory and 64 Kbyte I/O

■ Complete System Development Support

— All 8086 and 80C186 Software Development Tools Can Be Used for M80C186XL System Development

— ASM 86 Assembler, PL/M-86, Pascal-86, Fortran-86, iC-86 and System Utilities

— In-Circuit-Emulator (ICETM-186)

■ Available in 68-Pin:

— Ceramic Pin Grid Array (PGA)

■ Military Temperature Range:

— -55°C to +125°C (TC)