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Encyclopedia > Zilog eZ80

The ZiLOG eZ80 is an 8-bit microprocessor which is essentially an updated version of the company's earlier Z80 8-bit microprocessor. Zilog, often seen as ZiLOG, is a manufacturer of 8-bit, 16-bit, 24-bit, and 32-bit CPUs, and is most famous for its Intel 8080-compatible Z80 series. ... 8-bit refers to the number of bits used in the data bus of a computer. ... A microprocessor (sometimes abbreviated µP) is a programmable digital electronic component that incorporates the functions of a central processing unit (CPU) on a single semiconducting integrated circuit (IC). ... One of the first Z80 microprocessors manufactured; the date stamp says well before July 1976. ...


The eZ80 (like the Z380) is binary compatible with Z80 and Z180, but almost four times as fast as the old Z80 chip at the same core frequency. Available at up to 50MHz (2005), the CPU's speed is comparable to a Z80 clocked at 150 MHz if fast memory is used (i.e. no wait states and fetching an opcode, and at a blistering 200 MHz equivalent for data). The eZ80 also supports direct addressing of 16 MB of memory without a Memory Management Unit, by extending most registers (HL, BC, DE, IX, IY, PC, and SP) from 16 to 24 bits. Zilogs 32 bit processor from 1994. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...


The chip has a similar memory interface to the Z80 family, including the bus request/acknowledge pins, and adds 4 integrated chip selects. Versions are available with on-chip flash memory and on-chip zero wait-state SRAM (up to 256KB Flash and 16KB SRAM). The eZ80 supports a free TCP/IP stack and operating system based on Xinu operating system, as well as a real-time kernel. XINU is a small multitasking operating system that was originally designed for teaching in the university environment. ...

ZiLOG processors
v • d • e

Z80 series: Z80 | Z180 | Z280 | Z380 | Z800 | eZ80
Z8000 series: Z8000 | Z80,000 | Microcontroller: Z8 Zilog, often seen as ZiLOG, is a manufacturer of 8-bit, 16-bit, 24-bit, and 32-bit CPUs, and is most famous for its Intel 8080-compatible Z80 series. ... One of the first Z80 microprocessors manufactured; the date stamp says well before July 1976. ... The Zilog Z180 8 Bit processor is a successor of the Z80 CPU. Compatibel with the large base of software written for the ZiLOG Z80 CPU. The Z180 family adds higher performance and integrated peripheral functions like clock generator, 16 bit counters/timers, interrupt controller, wait-state generators, serial ports... The Z280 is a Zilog 16 bit, Z80 compatible processor from 1987. ... Zilogs 32 bit processor from 1994. ... The Zilog Z800 was a 16-bit microprocessor designed by Zilog to be released in 1985. ... The Z8000 was a 16-bit microprocessor introduced by ZiLOG in 1979. ... The Z80000 was Zilogs 32-bit processor from 1986, an expansion of its 16-bit predecessor, the Zilog Z8000. ... The Zilog Z8 is a family of microcontrollers from Zilog with on-chip RAM and (optional) ROM. Note that the Z8 is not related to the Zilog Z80, it uses a totally different architecture and instruction set. ...

z80 Compatibles

z80 series: NEC uPD780C | Sharp LH-0080 | T34
ASCII R800 | U880 This article or section does not cite its references or sources. ... NEC Corporation (Jp. ... NECs μPD780C Z80 clone on a ZX Spectrum board. ... Sharp Corporation ) (TYO: 6753 ) is a Japanese electronics manufacturer, founded in 1912. ... Sharps LH0080A Z80 clone The SHARP LH-0080 was a fully compatible version of the original NMOS version of the ZiLOG Z80 processor. ... The R800 is the CPU used in the MSX turboR. It was designed by ASCII, and the goals were to have the fastest CPU possible, while mantaining compatibilty with old MSX hardware and software. ... The U880 was an 8-bit microprocessor manufactured in the German Democratic Republic. ...


  Results from FactBites:
 
BIGpedia - ZiLOG - Encyclopedia and Dictionary Online (196 words)
ZiLOG, often seen as Zilog, is a manufacturer of 8-bit CPUs, and is most famous for its Intel 8080-compatible Z80 series.
Zilog was incorporated in California in 1974 by Federico Faggin, who left Intel after working on the 8080, and the Z80 was a vast improvement over it (it was faster, etc.).
After the Z80 Zilog introduced 16-bit and 32-bit processors, but these were not particularly successful, and the company refocused on the microcontroller market, producing both basic CPUs and application-specific integrated circuits/standard products (ASICs/ASSPs) built around a CPU core.
  More results at FactBites »


 

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