Editing Zilog Z180

{{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.<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}}</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>{{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 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}}</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, 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<ref>{{cite web|url=http://www.ic72.com/pdf_file/z/193929.pdf|title=Mixed-Signal Z183 Webserver|access-date=2023-08-22}}</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 -->}}</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&nbsp;MHz with an external oscillator for 5-volt operation, or at 20&nbsp;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
}}
* {{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
}}

==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]]
}}

{{zilog}}

[[Category:Zilog microprocessors]]
[[Category:Computer-related introductions in 1992]]
[[Category:8-bit microprocessors]]