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General Description

The Z80180? is an 8-bit MPU which provides the benefits of reduced system costs and also provides full backward compatibility with existing ZiLOG Z80 devices. Reduced system costs are obtained by incorporating several key system functions on-chip with the CPU. These key functions include I/O devices such as DMA, UART, and timer channels. Also included on-chip are wait-state generators, a clock oscillator, and an interrupt controller.

The Z80180? is housed in 80-pin QFP, 68-pin PLCC, and 64-pin DIP packages.

Features

The key features of Z80180? microprocessor unit (MPU) include:

? Code compatible with ZiLOG Z80? CPU

? Extended instructions

? Two DMA channels

? Low power-down modes

? On-chip interrupt controllers

? Three on-chip wait-state generators

? On-chip oscillator/generator

? Expanded MMU addressing (up to 1 MB)

? Clocked serial I/O port

? Two 16-Bit counter/timers

? Two UARTs

? Clock Speeds: 6 MHz, 8 MHz, and 10 MHz

? 6 MHz version supports 6.144 MHz CPU clock operation

? Operating range: 5 V

? Operating temperature range: 0 oC to +70 oC

? Three packaging styles

– 68-Pin PLCC

– 64-Pin DIP

– 80-Pin QFP