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)
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