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.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> 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.<ref>Template:Cite book</ref> It uses separate read and write strobes, sharing similar timings with the Z80 and Intel processors.<ref>Template:Cite book</ref> 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.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
VariantsEdit
| 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 | citation | CitationClass=web
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| Z8S189 | 10, 20, 33 | 2 | Clock Serial | UART, DMA | citation | CitationClass=web
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Z80182Edit
The 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)Template:Citation needed and has a low EMI option that reduces the slew rate of the outputs.Template: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.<ref>Template:Cite book</ref>
ReferencesEdit
Further readingEdit
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External linksEdit
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