Item Tag: 1980-1989

NEW Lot of Vintage (1983) Z80 (28-pin) "Counter/Timer Circuits" (15), by Zilog, Inc. (#Z8430A-PS) Packaging Condition: GOOD/GREAT - Comes in original anti-static tube packaging, but NO literature - data sheets can be found online (UNTESTED, and never used) and shipped in sturdy 25" mailing tube (SEALED w/pins on each end); w/minor scuffs to tube packaging (due to storage); chips unaffected - see pics Made in 1983 (Philippines/Korea)Selling together as lot of 15 count in 1 tubeSPECS: 28-pin (14 on each side)FEATURES: Four independently programmable counter/timer channels; each with a readable downcounter and a selectable 16 or 256 prescaler (Downcounters are reloaded automatically at zero count), Selectable positive or negative trigger initiates timer operation, Three channels have Zero Count/Timeout outputs capable of driving Darlington transistors. (1.5 mV @ 1.5V), NMOS version for cost sensitive performance solutions, CMOS version for the designs requiring low power consumption, NMOS Z0843004-4 MHz, Z0843006-6.17 MHz, CMOS Z84C3006-DC to 6.17 MHz - Z84C3008 - DC to 8 MHz, Z84C3010-DC to 10 MHz, Interfaces directly to the Z80 CPU or-for baud rate generation-to the Z80 SIO, Standard Z80 Family daisy-chain interrupt structure provides fully vectored, prioritized interrupts without external logic. The CTC may also be used as an interrupt controller, 6 MHz version supports 6.144 MHz CPU clock operation.The Z80 is an improved implementation of the Intel 8080 architecture, with substantial extensions to the register model and instruction set and with added hardware interface features. At introduction, the Z80 was faster, more capable, and much cheaper than the 8080. Alongside the 6502, the Z80 was one of the most popular 8-bit processors for general purpose microcomputers and other applications from the late 1970s well into the 1980s, and while modern CMOS versions of the 6502 are still in production and use today, the Z80 was discontinued in 2024. The Z80 CPU was used in the Sinclair ZX80, ZX81, ZX Spectrum and the Amstrad CPC home computers as well as the MSX architecture and the Microbee and Tandy TRS-80 (models I, II, III, 4, and others). The CP/M-80 operating system (and its huge software library featuring hits like WordStar and dBase) was known to be the Z80 disk operating system, and its success is partly due to the popularity of the Z80. The 1985 Commodore 128 added a Z80 to the Commodore 64 hardware allowing it to run CP/M software; the Digital Equipment Corporation Rainbow 100 similarly added a Z80 to an Intel 8088-based MS-DOS computer to enable the machine to run both MS-DOS and CP/M software natively.Zilog, Inc. is an American manufacturer of microprocessors, microcontrollers, and application-specific embedded system-on-chip (SoC) products. Founded in 1974 by Federico Faggin and Ralph Ungermann, who were soon joined by Masatoshi Shima, who had all left Intel after working the 4004 and 8080 microprocessors. The company's most famous product is the Z80 microprocessor, which played an important role in the evolution of early computing. Software-compatible with the Intel 8080, it offered a compelling alternative due to its lower cost and increased performance, propelling it to widespread adoption in video game systems and home computers during the late 1970s and early 1980s.Your shipment will arrive via USPS Priority Mail (1-4 business days) or USPS Ground Advantage (2-5 business days), after the 2-3 day processing time (upon paid purchase)WE COMBINE-SHIP -ASK US FIRST!Shipment(s) sent out of Lemon Grove, California, USAWill be packed very well - read our feedback!No Returns ***AN INVOICE WILL BE SENT AFTER PURCHASE, WHICH MAY REFLECT A MORE ACCURATE POSTAGE RATE FOR THIS ITEM - DON'T PASS THIS UP YET! Please visit our Backroad Memories ebay store, or visit www.BackroadMemories.com, for more model collectibles added weekly! PLEASE SHARE OUR STORE WITH EVERYBODY YOU KNOW!