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Zilog Family |
| Microprocessor | Production Date | 8/16/32-bit? | Docs | Features/Limits |
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Zilog Z80
Z80 Peripherals |
(July 1976) (June 2001) |
Address: 16 Data: 8 |
User Manual |
First product after separation from Intel. Better interrupt system. Built-in DRAM refresh. 4MHz to 20MHz CMOS. 64KB max. Z80 CPU Peripherals User Manual um0081.pdf |
| Zilog Z8000 | (1979) |
Address: 24 Data: 16 |
Tech Manual | Combine registers to operate as 32-bit or 64-bit for math. 8MB max memory. Not Z80 compatible. |
| Zilog Z800 | (1985) |
Address: 24 Data: 8/16 |
16MB MMU. Poor initial support because of big brother Z8000. Became the Z280 in 1986. Calculation of exact execution times was much harder to do on the Z800 than for the Z80. | |
| Zilog Z80000 | (late 1985) |
Address: 32 Data: 8/16/32 |
Tech Manual | Instruction pipeline, cache, 4GB RAM, competed with incompatible Intel 80386. Compact (64KB), Segmented 16MB) and Linear (4GB) modes. |
| Zilog Z280 | (early 1986) |
Address: 32 Data: 8/16/32 |
Tech Manual | Renamed from the Z800. 16MB MMU. Multitasking and multiprocessor features. Four different address spaces. Multiplexed address and data buses - ugh. |
| Zilog Z180 | (late 1986) |
Address: 20 Data: 8 |
Enhanced, faster version of the original Z80. Speed 6MHz to 32MHz. Peripheral functions like 1MB MMU, 2 DMAs, 2 ASCIs (UARTs), 1/2/4 Timers, and standby power mode. | |
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(1994) |
Address: 16/32 Data: 16-32 |
16-bit (64KB) or 32-bit (4GB) linear address space. Flexible bus interface timing, with separate control signals and timing for memory and I/O. |
| Microcontroller | Production Date | Docs | Features/Limits |
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Zilog Z8 Encore! (Z8Fxxxx) |
(circa 1979) |
20MHz 8-bit eZ8 CPU. 16-bit address space and second space for large apps. 1KB Flash memory, 256B RAM, 64B NVRAM. On-chip peripherals like A/DCs, SPI, I2C, etc. Two 16-bit timers, internal oscillators, 2v7 to 3v6 voltage range with 5v tolerant digital inputs. |
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(2005) |
Specialty microcontroller family including PCMCIA controllers, etc. |
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Zilog ZNEO (Z16F) |
(2006) |
20MHz 16-bit, 32KB-128KB Flash, 4KB RAM, ADC, 12-bit PWM, Op Amp, Analog Comparator, SPI, I2C, IrDA, LIN, 2 UARTs, etc. Motor control. |
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(2011) |
8-bit, 8KB Flash, 512B RAM, 512B EEPROM, USART, buzzer port, I2C, 12-bit ADC, etc. |
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Microprocessor/ Microcontroller |
Production Date | Docs | Features/Limits |
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Zilog eZ80 Acclaim! (eZ80F9xx) |
(2004) |
8-bit, operates in Z80-compatible (64KB) mode using 256 pages of 64KB MBASE memory, or 24-bit 16MB linear address mode. Features: pipelines Z80 core, 128KB Flash, 8KB SRAM, SLEEP and peripheral power down modes, 2 UARTs, I2C and SPI with independent clock generation, new DMA-like block transfer instructions, interrupt controller, RTC, 6 16-bit CTCs, 24 bits GPIO, ZDI debug interface, 3.0-3.6v supply voltage with 5v tolerant inputs, etc. |
Tags: Z80, eZ80