The Zilog Z180 is an 8-bit microprocessor designed by Zilog as a successor to the Z80. It is compatible with the large base of software written for the Z80.[1] 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.[2] It uses separate read and write strobes, sharing similar timings with the Z80 and Intel processors.[3] 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.[4]
Variants
edit| 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, 20, 33 | 2 | Clock, Serial, 24 | ESCC, CSIO, UART, PIO | S180 Megacell, 2xESCC channels, 3*8bit IO, 16550 MIMIC |
| Z80185/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 | 2 | Clock, Serial, 24 | ESCC, CSIO, UART, PIO | S180 Megacell, 2xESCC channels, 3*8bit IO, 16550 MIMIC, 3.3V operation |
| Z8S180 | 10, 20, 33 | 2 | Clock Serial | UART, DMA | 1 MB MMU, 2xDMAs, 2xUARTs |
| Z8S183 | 10, 20, 33 | 2 | Clock Serial | UART, DMA | 1 MB MMU, 2xDMAs, 2xUARTs 16550, MIMIC, 3.3V operation[5] |
| Z8S189 | 10, 20, 33 | 2 | Clock Serial | UART, DMA | 1 MB MMU, 2xDMAs, 2xUARTs, 3.3V operation[6] |
Z80182
editThe Zilog Z80182, introduced in 1997, is an enhanced, faster version of the older Z80 and is part of the Z180 microprocessor family. It is nicknamed the Zilog Intelligent Peripheral Controller (ZIP). It is also fully static (the clock can be halted and no data in the registers will be lost)[citation needed] and has a low EMI option that reduces the slew rate of the outputs.[citation needed]
The Z80182 can operate at 33 MHz with an external oscillator for 5-volt operation, or at 20 MHz using the internal oscillator for 3.3-volt operation.[7]
References
editFurther reading
edit- Harston, J.G. (1997-09-09). "Z180 Opcode Map". Retrieved 2009-07-15.
- Harston, J.G. (1998-04-15). "Full HD64180/Z180 Opcode List". Retrieved 2009-07-15.
External links
edit- "Z80180 Microprocessor Unit Product Specification" (PDF). San Jose, California: Zilog. November 2006. Retrieved 2009-07-15.
- "Z80S180/Z80L180 Product Specification" (PDF). San Jose, California: Zilog. 2000. Retrieved 2009-07-15.
- "Z8S180 SL1960 Product Specification" (PDF). San Jose, California: Zilog. 1998. Retrieved 2009-07-15.
- "Z8018x MPU Family User Manual" (PDF). San Jose, California: Zilog. 2003. Retrieved 2009-07-15.