The Zilog Z180 8-bit processor is a successor of the Z80 CPU. It is compatible with the large base of software written for the Z80. The Z180 family adds higher performance and integrated peripheral functions like clock generator, 16 bit counters/timers, interrupt controller, wait-state generators, serial ports and a DMA controller. It uses separate read and write strobes, sharing similar timings with the Z80 and Intel processors. The on-chip memory management unit (MMU) has the capability of addressing up to 1 MB of memory. It is possible to configure the Z180 to operate as the Hitachi HD64180.
| Chip | Speed (MHz) | Timers | I/O | Comm. Contr. | Others |
|---|---|---|---|---|---|
| Z80180 | 6, 8, 10 | 2 | N/S | CPU | 1 MB MMU, 2xDMAs, 2xUARTs |
| Z80181 | 10 | 1 | 16 | CPU | 1 MB MMU, 2xDMAs, 2xUARTs |
| Z80182 | 16, 33, 20 | 0 | Clock Serial, 24 | ESCC, CSIO, UART | S180 Megacell, 2xESCC channels, 16550 MIMIC |
| Z80195 | 20, 33 | 4 | 7/24 | SCC, CSIO, UART | |
| Z8L180 | 20 | 2 | Clock Serial | CSIO, UART | 1 MB MMU, 2xDMAs, 2xUARTs, 3.3 V Operation |
| Z8L182 | 20 | 0 | Clock Serial | ESCC, CSIO, UART | S180 Megacell, 2xESCC channels, 16550 MIMIC, 3.3V operation |
| Z8S180 | 10, 20, 33 | 2 | Clock Serial | UART, DMA, I2C, SPI | 1 MB MMU, 2xDMAs, 2xUARTs |
Read more about Zilog Z180: Z80182