General Description

The Innovasic Semiconductor IA186XL and IA188XL microcontrollers have a set of base peripherals beneficial to many embedded applications and include a standard numeric interface, an interrupt control unit, a chip-select unit/Ready Generation Logic, a DRAM refresh control unit, a Power-Save Control unit, DMA and three 16-bit timer/counters. The IA186XL and IA188XL microcontrollers operate at 5.0 volts ± 10. The following functional description describes the base architecture of the 80C186XL. The 80C186XL is a very high integration 16-bit microprocessor. It combines some of the most common microprocessor system components onto one chip. The 80C186XL is object-code compatible with the 8086/8088 microprocessors and adds ten new instruction types to the 8086/8088 instruction set.

Features

The primary features of the IA186XL and IA188XL microcontrollers are as follows:

● Form, fit, and function compatible version of the low power Intel 80C186XL/80C188XL

● Operation modes:

– Enhanced mode

o DRAM refresh control unit

o Power-save mode

o Direct interface to 80C187 (IA186XL only)

– Compatible mode

o Pin-for-pin replacement for NMOS 80186/80188 non-numeric applications

● Integrated feature set

– Static, modular CPU

– Clock generator

– Two independent DMA channels

– Programmable interrupt controller

– Three 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 ten additional instructions over 8086/8088

● Crystal supports internal 20–25 MHz operation

● Direct addressing capability to 1 MByte memory and 64 Kbyte I/O

● Available in 68-Lead:

– Plastic Leaded Chip Carrier (PLCC)

● Available in 80-Lead:

– Plastic Quad Flat Pack (PQFP)

– Low Profile Quad Flat Pack (LQFP)

● Extended Temperature Range (-40°C to +85°C)