IA186XLPLC68IR2

IA186XL is a 16bit microcontroller. It has a set of base peripherals beneficial to many embedded applications and includes 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 16bit timer/counters. The following functional description describes the base architecture of the 80C186XL. It is a very high integration 16bit 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. In Compatible Mode, the 80C186XL is completely compatible with the 80186, with the exception of 8087 support. The Enhanced mode adds three new features to the system design. It is a PowerSave control, Dynamic RAM refresh, and an asynchronous numerics coprocessor interface.

• Enhanced mode, DRAM refresh control unit, power-save mode
• Direct interface to 80C187
• Pin-for-pin replacement for NMOS 80186/80188 non-numeric applications
• Static, modular CPU, clock generator, 2 independent DMA channels, programmable interrupt controller
• Three programmable 16bit 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, crystal supports internal 20 to 25MHz operation
• Direct addressing capability to 1MByte memory and 64Kbyte I/O
• 68 lead PLCC package, operating temperature range from -40°C to 85°C

Notes

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