{{Short description|8-bit microprocessor}} [[File:KL Zilog Z180.jpg|thumb|right|Older Z180 in 68-pin [[plastic leaded chip carrier|PLCC]] package (the smaller 80-pin [[QFP]] and [[LQFP]] packages are more common today.)]] [[File:KL Zilog Z180 DIP.jpg|thumb|Z8S180 in 64-pin [[Dual in-line package|DIP]]]]
The '''Zilog Z180''' is an [[8-bit computing|8-bit]] microprocessor designed by [[Zilog]] as a successor to the [[Zilog Z80|Z80]]. It is compatible with the large base of software written for the [[Z80 instruction set]].<ref>{{cite web|url=http://www.z80.info/z80lives.htm|quote=The designers picked an architecture compatible with the Z80, giving Z80 users a completely software compatible upgrade path|title=The Z80 Lives!|last=Ganssle|first=Jack|year=1992|access-date=2009-07-22|archive-date=2023-12-20|archive-url=https://web.archive.org/web/20231220144616/http://www.z80.info/z80lives.htm|url-status=live}}</ref> The Z180 family adds higher performance and integrated peripheral functions like [[clock generator]], 16-bit counters/timers, [[interrupt]] controller, [[wait state|wait-state]] generators, [[serial port]]s and a [[direct memory access|DMA]] controller.<ref>{{cite book|page=13|isbn=978-0-12-274880-6|author=Jack G. Ganssle.|year=1992|publisher=Academic Press|location=San Diego|title=The art of programming embedded systems}}</ref> It uses separate read and write [[Data strobe encoding|strobes]], sharing similar timings with the Z80 and [[Intel]] processors.<ref>{{cite book|page=[https://archive.org/details/embeddedmicropro00ball_775/page/n48 34]|isbn=978-0-7506-7534-5|author=Stuart R. Ball.|year=2002|publisher=Newnes|location=Amsterdam|title=Embedded microprocessor systems real world design|url=https://archive.org/details/embeddedmicropro00ball_775|url-access=limited}}</ref> The on-chip [[memory management unit]] (MMU) has the capability of addressing up to 1 [[Megabyte|MB]] of memory. It is possible to configure the Z180 to operate as the [[Hitachi HD64180]].<ref>{{cite web |title=Z80 Application Note: Migrating from the Hitachi HD64180 to ZiLOG's Z80180, page 7 Summary |url=http://www.zilog.com/appnotes_download.php?FromPage=DirectLink&dn=AN0026&ft=Application%20Note&f=YUhSMGNEb3ZMM2QzZHk1NmFXeHZaeTVqYjIwdlpHOWpjeTk2TVRnd0wyRndjRzV2ZEdWekwyaGtOalF4T0RBdGJXbG5jbUYwYVc5dUxuQmtaZz09 |website=zilog.com/appnotes_download.php |publisher=Zilog Inc. |access-date=May 20, 2019 |archive-date=December 12, 2019 |archive-url=https://web.archive.org/web/20191212223553/http://www.zilog.com/appnotes_download.php?FromPage=DirectLink&dn=AN0026&ft=Application%20Note&f=YUhSMGNEb3ZMM2QzZHk1NmFXeHZaeTVqYjIwdlpHOWpjeTk2TVRnd0wyRndjRzV2ZEdWekwyaGtOalF4T0RBdGJXbG5jbUYwYVc5dUxuQmtaZz09 |url-status=live }}</ref>
==Variants== {| class="wikitable" ! 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]], [[Programmed input–output|PIO]] || S180 Megacell, 2xESCC channels, 3*8bit IO, 16550 MIMIC |----- ! Z80185/Z80195 || 20, 33 || 4 | 7/24 || [[Universal synchronous and asynchronous receiver-transmitter|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<ref>{{cite web|url=http://www.ic72.com/pdf_file/z/193929.pdf|title=Mixed-Signal Z183 Webserver|access-date=2023-08-22|archive-date=2024-04-15|archive-url=https://web.archive.org/web/20240415025827/http://www.ic72.com/pdf_file/z/193929.pdf|url-status=live}}</ref> |----- ! Z8S189 || 10, 20, 33 || 2 | Clock Serial || UART, DMA || 1 MB MMU, 2xDMAs, 2xUARTs, 3.3V operation<ref>{{Cite web|url=http://datasheets.chipdb.org/Zilog/Z180/Z80189.pdf|title=Www.Alldatasheet.Com<!-- Bot generated title -->|access-date=2019-08-18|archive-date=2019-02-10|archive-url=https://web.archive.org/web/20190210131032/http://datasheets.chipdb.org/Zilog/Z180/Z80189.pdf|url-status=live}}</ref> |}
==Z80182== The '''[[Zilog]] [[Z80182]]''', introduced in 1997, is an enhanced, faster version of the older [[Zilog Z80|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|date=July 2009}} and has a low [[Electromagnetic interference|EMI]] option that reduces the [[slew rate]] of the outputs.{{citation needed|date=July 2009}}
The Z80182 can operate at 33 MHz with an external [[electronic oscillator|oscillator]] for 5-volt operation, or at 20 MHz using the internal oscillator for 3.3-volt operation.<ref>{{cite book | title = Z80182/Z8L182 Zilog Intelligent Peripheral Controller Product Specification | year = 1997 | publisher = [[Zilog]] | location = [[San Jose, California]] | pages = 3–48 | chapter = CPU Control Register }}</ref>
==References== {{reflist|30em}}
==Further reading== * {{cite web | url = http://mdfs.net/Docs/Comp/Z180/OpCodeMap | title = Z180 Opcode Map | access-date = 2009-07-15 | last = Harston | first = J.G. | date = 1997-09-09 | archive-date = 2008-11-22 | archive-url = https://web.archive.org/web/20081122031241/http://www.mdfs.net/Docs/Comp/Z180/OpCodeMap | url-status = dead }} * {{cite web | url = http://mdfs.net/Docs/Comp/Z180/OpList | title = Full HD64180/Z180 Opcode List | access-date = 2009-07-15 | last = Harston | first = J.G. | date = 1998-04-15 | archive-date = 2008-09-07 | archive-url = https://web.archive.org/web/20080907151624/http://www.mdfs.net/Docs/Comp/Z180/OpList | url-status = dead }}
==External links== * {{cite web | url = http://www.zilog.com/docs/z180/ps0140.pdf | title = Z80180 Microprocessor Unit Product Specification | access-date = 2009-07-15 |date=November 2006 | publisher = [[Zilog]] | location = [[San Jose, California]] }} * {{cite web | url = http://www.zilog.com/docs/z180/z8s180ps.pdf | title = Z80S180/Z80L180 Product Specification | access-date = 2009-07-15 | year = 2000 | publisher = [[Zilog]] | location = [[San Jose, California]] }} * {{cite web | url = http://www.zilog.com/docs/z180/dc4077.pdf | title = Z8S180 SL1960 Product Specification | access-date = 2009-07-15 | year = 1998 | publisher = [[Zilog]] | location = [[San Jose, California]] }} * {{cite web | url = http://www.zilog.com/docs/z180/um0050.pdf | title = Z8018x MPU Family User Manual | access-date = 2009-07-15 | year = 2003 | publisher = [[Zilog]] | location = [[San Jose, California]] }}
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[[Category:Zilog microprocessors]] [[Category:Computer-related introductions in 1992]] [[Category:8-bit microprocessors]]