U880

Last updated
U880
KL KME U880D.jpg
An early U880D microprocessor, manufactured in December 1981
General information
Launched1980
Discontinuedc. 1996
Common manufacturer(s)
  • VEB Mikroelektronik "Karl Marx" Erfurt
Performance
Max. CPU clock rate 1 MHz to 8 MHz
Architecture and classification
Instruction set Zilog Z80
Physical specifications
Package(s)

The U880 is an 8-bit microprocessor that was manufactured by VEB Mikroelektronik "Karl Marx" Erfurt (abbreviated as MME; part of Kombinat Mikroelektronik Erfurt) in the German Democratic Republic. Production of the U880 started in 1980 [1] at VEB Funkwerk Erfurt (abbreviated as FWE; the plant was renamed to VEB Mikroelektronik "Karl Marx" in 1983 [2] ). The U880 is an unlicensed clone of the Zilog Z80 microprocessor, also supporting illegal opcodes and bugs, except for very minor differences like not setting the CY flag for the OUTI command (when L goes zero).

Contents

Processor variants

Die of the U880; size 4513 um x 4251 um (first die shrink 1984); chip inscription at the bottom of the image: "U880/5 HL JH 84" T34vm1-Z80.jpg
Die of the U880; size 4513 µm x 4251 µm (first die shrink 1984); chip inscription at the bottom of the image: "U880/5 HL JH 84"
Die of the U880; size 3601 um x 3409 um (second die shrink 1990); chip inscription at the bottom of the image: "U880/6 HL MME 1990" KR1858VM1-HD.jpg
Die of the U880; size 3601 µm x 3409 µm (second die shrink 1990); chip inscription at the bottom of the image: "U880/6 HL MME 1990"

The U880 was manufactured in NMOS technology and encased in a plastic DIL40 package with a pin spacing of 2.5 mm [3] [4] (export versions had the Western pin spacing of 2.54 mm; Russian variants also came in a ceramic package).

Temperature rangeClock rateDesignations
0 °C to 40 °C1 MHzUD880D, [lower-alpha 1] [5] UB880D S1 [lower-alpha 1] [6]
0 °C to 70 °C2.5 MHzU880D, [lower-alpha 2] [3] UB880D, [4] 80-CPU [lower-alpha 3]
4 MHzUA880D, [4] 80A-CPU [lower-alpha 3]
8 MHzU880DC08, [lower-alpha 4] Thesys Z80H [lower-alpha 5]
−25 °C to +85 °C2.5 MHzVB880D [4]
  1. 1 2 Out-of-spec, hobbyist version
  2. ↑ Original designation when this was the only variant available
  3. 1 2 Designation for export; 2.54 mm pin spacing
  4. ↑ Manufactured in 1992 by ERMIC
  5. ↑ Manufactured after 1992 by Thesys

The military version of the U880 has an additional "MEK 4" marking.

Support chips

Floppy-disk controller U8272D04 (1989) DDR-DIL40-Zollraster.jpg
Floppy-disk controller U8272D04 (1989)
Graphics display controller U82720DC03 (1989) MME U82720DC03 (=i82720).jpg
Graphics display controller U82720DC03 (1989)

VEB Mikroelektronik "Karl Marx" also manufactured a number of support chips for the U880. The prefixes UA, UB, VB, 80, and 80A correspond to the same temperature ranges and clock rates as for the processor variants above. Likewise, the suffix S1 indicates the out-of-spec, hobbyist version.

DesignationInternational equivalentDescription
U855D, [lower-alpha 1] [3] UA855D, [4] [7] UB855D, [4] [7] UD855D, [lower-alpha 2] [5] VB855D, [4] UB855D S1, [lower-alpha 2] [6] 80-PIO, [lower-alpha 3] 80A-PIO [lower-alpha 3] Zilog Z80 PIO parallel input/output
U8560D, [lower-alpha 1] [3] UA8560D, [4] UB8560D, [4] [7] VB8560D, [4] UB8560D S1, [lower-alpha 2] [6] 80-SIO/0, [lower-alpha 3] 80A-SIO/0 [lower-alpha 3] Zilog Z80 SIO/0 serial input/output
U857D, [lower-alpha 1] [3] UA857D, [4] [7] UB857D, [4] [7] VB857D, [4] UB857D S1, [lower-alpha 2] [6] 80-CTC, [lower-alpha 3] 80A-CTC [lower-alpha 3] Zilog Z80 CTC counter/timer circuit
UA858D, [4] UB858D, [4] UB858D S1, [lower-alpha 2] 80-DMA, [lower-alpha 3] [7] 80A-DMA [lower-alpha 3] Zilog Z80 DMA DMA controller
U8561D, [lower-alpha 1] UB8561D [8] Zilog Z80 SIO/1 serial input/output
UA8563D, [4] UB8563D, [4] VB8563D, [4] UB8563D S1, [lower-alpha 2] 80-DART, [lower-alpha 3] 80A-DART [lower-alpha 3] Zilog Z80 DART dual asynchronous receiver/transmitter
U8272D04, [4] U8272D08 [4] Intel 8272 floppy-disk controller
U82530DC04, [9] U82530DC06 [9] Zilog SCC serial communications controller
U82536DC04 [9] Zilog CIOcounter/timer and parallel input/output
U82720DC02, U82720DC03, U82720DC04 [4] Intel 82720 graphics display controller
  1. 1 2 3 4 Original designation when this was the only variant available
  2. 1 2 3 4 5 6 Out-of-spec, hobbyist version
  3. 1 2 3 4 5 6 7 8 9 10 Designation for export; 2.54 mm pin spacing

Applications

The U880 was by far the most widely used microprocessor in the German Democratic Republic. Examples are:

At the time the U880 was the most advanced 8-bit processor available in the Eastern Bloc. Only clones of the Intel 8080 were manufactured in Poland, Czechoslovakia, Hungary, Romania, and the Soviet Union. As the Z80 replaced the Intel 8080 in the West, the U880 was used throughout the Eastern Bloc. Examples are:

Further development

Microprocessor T34VM1 (Angstrem Zelenograd, 1991) T34vm1.jpg
Microprocessor T34VM1 (Angstrem Zelenograd, 1991)

Following the example of Zilog where the Z80 was succeeded by the 16-bit processors Z8001 / Z8002, VEB Mikroelektronik "Karl Marx" produced the U8001 / U8002. And just like its Western counterpart, the U8001 / U8002 saw far less use than the U880. When MS-DOS emerged as the dominant operating system for personal computers, in the Eastern Bloc the only available clone of the Intel 8086 was the Soviet K1810VM86. VEB Mikroelektronik "Karl Marx" then proceeded to develop a clone of the Intel 80286, the U80601. [9] Furthermore, a CMOS version of the Z80 was developed with the designation U84C00. [9] [15] [16] Due to the economic changes following the German reunification in 1990, neither project proceeded beyond pilot production. VEB Mikroelektronik "Karl Marx" (MME) was privatized in 1990 under the name ERMIC GmbH, a large part of which became Thesys Gesellschaft für Mikroelektronik mbH in 1992. [17] Both ERMIC and Thesys continued to manufacture the NMOS version of the U880, ERMIC still with the MME name and logo, [18] Thesys under its new name. A die shrink chip with the marking U880/6 had been developed in 1990 and went into production some time after that. The smaller chip allowed clock rates up to 8 MHz for the U880DC08 and Thesys Z80H. While Zilog likely could have taken up legal action against the successors of VEB Mikroelektronik "Karl Marx" for copyright infringement, they recruited Thesys as a Zilog distributor instead. [19]

From about 1991 until 1993, bare U880 chips were sold to Russian and Ukrainian companies and packaged there. Initially the U880/5 chip revision was labelled as 80A-CPU [20] and T34VM1  [ ru ] (Russian : Т34ВМ1). [21] Later integrated circuits with U880/6 chips inside received the official designation KR1858VM1  [ ru ] (Russian : КР1858ВМ1) for the plastic package and KM1858VM1 (Russian : КМ1858ВМ1) for the ceramic package. [22] Manufacturers include Angstrem Zelenograd, Kvazar Kiev, and VZPP Voronesh. [22]

Related Research Articles

<span class="mw-page-title-main">Intel 8008</span> 8-bit microprocessor

The Intel 8008 is an early 8-bit microprocessor capable of addressing 16 KB of memory, introduced in April 1972. The 8008 architecture was designed by Computer Terminal Corporation (CTC) and was implemented and manufactured by Intel. While the 8008 was originally designed for use in CTC's Datapoint 2200 programmable terminal, an agreement between CTC and Intel permitted Intel to market the chip to other customers after Seiko expressed an interest in using it for a calculator.

<span class="mw-page-title-main">Zilog Z8000</span> 16-bit microprocessor

The Z8000 is a 16-bit microprocessor introduced by Zilog in early 1979. The architecture was designed by Bernard Peuto while the logic and physical implementation was done by Masatoshi Shima, assisted by a small group of people. In contrast to most designs of the era, the Z8000 did not use microcode which allowed it to be implemented in only 17,500 transistors.

<span class="mw-page-title-main">VEB Robotron</span> East German manufacturer of computers and consumer electronics

VEB Kombinat Robotron was the largest East German electronics manufacturer. It was headquartered in Dresden and employed 68,000 people in 1989. Its products included personal computers, SM EVM minicomputers, the ESER mainframe computers, various computer peripherals as well as microcomputers, radios, television sets and other items including cookie press Kleingebäckpresse Typ 102.

<span class="mw-page-title-main">KC 85</span> Microcomputers made in East Germany from 1984 until 1990.

The KC 85 were models of microcomputers built in East Germany by VEB Mikroelektronik "Wilhelm Pieck" Mühlhausen. The first model in the series, the HC 900, originally designed as a home computer and introduced in 1984, was renamed to KC 85/2 in 1985 to de-emphasize its use as consumer good.

<span class="mw-page-title-main">Zilog Z8</span>

The Zilog Z8 is a microcontroller architecture, originally introduced in 1979, which today also includes the Z8 Encore!, eZ8 Encore!, eZ8 Encore! XP, and eZ8 Encore! MC families.

<span class="mw-page-title-main">ZMDI</span> Microelectronics research center in East Germany

Zentrum Mikroelektronik Dresden (ZMD) was regarded as the heart of East Germany's microelectronics research in the 1980s as well as its most advanced integrated circuit manufacturer. Together with TU Dresden and VEB Spurenmetalle Freiberg, ZMD formed the foundation for Silicon Saxony, a cluster of microelectronics companies that came to include new fabs by Siemens and AMD.

KME may refer to:

<span class="mw-page-title-main">X-Fab</span> German semiconductor foundry

The X-FAB Silicon Foundries is a group of semiconductor foundries. The group specializes in the fabrication of analog and mixed-signal integrated circuits for fabless semiconductor companies, as well as MEMS and solutions for high voltage applications. The holding company named "X-FAB Silicon Foundries SE" is based in Tessenderlo, Belgium while its headquarters is located in Erfurt, Germany.

MME may stand for:

<span class="mw-page-title-main">Robotron Z1013</span> Single-board home computer made in East Germany from 1985 until 1990.

The MRB Z 1013 was an East German single-board computer produced by VEB Robotron Riesa, which was primarily intended for private use and educational institutions. It was powered by a U880 processor and sold together with a membrane keyboard. Initially, the kit was equipped with 16 kilobytes of DRAM, which was later replaced by a 64 KB version.

<span class="mw-page-title-main">U80601</span> Microprocessor

The U80601 was a 16-bit microprocessor made in 1989-1990 by Kombinat Mikroelektronik Erfurt in the former German Democratic Republic of East Germany. It was manufactured in NMOS technology and encased in a PLCC or ceramic (CLCC) package.

<span class="mw-page-title-main">U80701</span> 32-bit microprocessor developed in the German Democratic Republic

The U80701 is a 32-bit microprocessor developed from 1986-1990 in the German Democratic Republic. It was manufactured by VEB Mikroelektronik "Karl Marx" Erfurt (MME) in NMOS technology and is encased in a ceramic quad flat package.

<span class="mw-page-title-main">Robotron KC 87</span> Microcomputers made in East Germany from 1984 until 1990.

The Robotron KC 87, fully known as Kleincomputer robotron KC 87, was an 8-bit microcomputer released in 1987 and produced in East Germany by VEB Robotron-Meßelektronik "Otto Schön" Dresden, part of Kombinat Robotron.

<span class="mw-page-title-main">A 5120</span>

The A 5120 was an office computer produced by VEB Robotron in Karl-Marx-Stadt, East Germany starting in 1982. The system featured an 8-bit microprocessor, the U880. It was built for office work and had minimal graphics and sound capabilities. The price was between 27,000 and 40,000 East German marks depending on equipment.

<span class="mw-page-title-main">PC 1715</span> Office computer produced by VEB Robotron

The PC 1715 was an office computer produced by VEB Robotron in East Germany starting in 1985. The system featured an 8-bit microprocessor, the U880, a clone of the Zilog Z80. It was built for office work and education, but was also put to some specialist uses, for example an optional interface was available for controlling a pacemaker. The 1715 had minimal graphics and sound capabilities. The price was 19,000 East German marks.

<span class="mw-page-title-main">P8000</span> Microcomputer system

The P8000 is a microcomputer system developed in 1987 by the VEB Elektro-Apparate-Werke Berlin-Treptow „Friedrich Ebert“ (EAW) in the German Democratic Republic. It consisted of an 8-bit and a 16-bit microprocessor and a Winchester disk controller. It was intended as a universal programming and development system for multi-user/multi-task applications. The initial list price of the P8000 was 172,125 East German marks.

<span class="mw-page-title-main">Kombinat Mikroelektronik Erfurt</span> Manufacturer of active electronic components in East Germany

VEB Kombinat Mikroelektronik Erfurt was an important manufacturer of active electronic components in East Germany. It should not be confused with the more well-known VEB Kombinat Robotron Dresden which used integrated circuits from Kombinat Mikroelektronik in its computers.

<span class="mw-page-title-main">Electronics industry in East Germany</span> Overview of the electronics industry of East Germany

East Germany was one of the leading computer producers in the Eastern Bloc as purchases of higher technologies from the West were under various embargoes. A program of illegal purchases, copying and reverse engineering of Western examples was established, after which GDR sold these computers to COMECON countries. Under the rule of Erich Honecker, electronics, microelectronics and data processing industries grew at average 11.4% in the 1970s and 12.9% during the 1980s.

<span class="mw-page-title-main">LC80</span> Educational computer

The educational computer LC80 was a single-board computer manufactured in the German Democratic Republic (GDR) and intended for teaching purposes. It was the first computer that retail customers could buy in the GDR.

<span class="mw-page-title-main">Halbleiterwerk Frankfurt (Oder)</span> East Germanys largest manufacturer of semiconductor devices

VEB Halbleiterwerk Frankfurt (Oder) (abbreviated HFO or HWF) was the largest manufacturer of semiconductor devices in the German Democratic Republic. In 1989, HFO produced 110 million integrated circuits (70% of all integrated circuits produced in the GDR in that year), 9.7 million transistors, and 150 million transistor chips. Despite this, HFO did not rise to prominence like Zentrum Mikroelektronik Dresden (of megabit chip fame) or VEB Mikroelektronik "Karl Marx" Erfurt (known for its microprocessors). Also unlike Zentrum Mikroelektronik Dresden and VEB Mikroelektronik "Karl Marx" Erfurt, HFO did not survive long after German Reunification.

References

  1. ↑ Berkner, Jörg (2016-04-12). "Die Halbleiterindustrie in der DDR" (in German). Hüthig GmbH. Retrieved 2017-11-07.
  2. ↑ "Ehrennamen "Karl Marx" für Erfurter Betrieb". Neues Deutschland (in German). 1983-10-06. Retrieved 2017-11-03.
  3. 1 2 3 4 5 RFT Semiconductors 1981 (PDF). elektronik export-import. 1981. pp. 20–21, 28–33. Retrieved 2018-01-16.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 RFT Aktive elektronische Bauelemente 1988 [RFT Active electronic components 1988](PDF) (in German). VEB Kombinat Mikroelektronik. July 1987. pp. 243–258, 310–313, 326–328. Retrieved 2018-01-16.
  5. 1 2 "UD 880 und UD 855" [UD 880 and UD 855]. Radio Fernsehen Elektronik (in German). VEB Verlag Technik. 35 (2): 70. 1986. ISSN   0033-7900.
  6. 1 2 3 4 "Unipolare Amateur-IS (Übersicht)" [Unipolar hobbyist IC (overview)]. Funkamateur (in German). Militärverlag der DDR. January 1989. pp. 27–28. ISSN   0016-2833 . Retrieved 2018-01-16.
  7. 1 2 3 4 5 6 "East German, and Soviet Support Chips". The CPU shack. 2005. Retrieved 2018-02-22.
  8. ↑ Kramer, Manfred (1986-02-15). Praktische Mikrocomputertechnik[Practical microcomputer technology] (in German). Militärverlag der DDR. p. 214. ISBN   3-327-00361-0.
  9. 1 2 3 4 5 Mikroelektronik Gesamtübersicht [Microelectronics - Complete overview](PDF) (in German). Applikationszentrum Elektronik Berlin. 1990. Retrieved 2018-01-17.
  10. ↑ "Tesla Ondra". HCM. Retrieved 2018-01-13.
  11. ↑ "Microkey Primo A-32". Old-Computers.com. Retrieved 2018-03-27.
  12. ↑ "Electro Magnetica: Jet". HCM. Retrieved 2018-01-13.
  13. 1 2 "SCIENCE & TECHNOLOGY - EUROPE & LATIN AMERICA" (PDF). Defense Technical Information Center. 22 June 1987. pp. 66–75. Archived from the original on August 25, 2016. Retrieved 12 February 2018.
  14. ↑ Kasper, B.; Löschner, V. (1985). "Leipziger Frühjahrsmesse 1985" [Leipzig Spring Fair 1985]. Radio Fernsehen Elektronik (in German). Berlin: VEB Verlag Technik. 34 (6): 350. ISSN   0033-7900.
  15. ↑ "U84C00". 2013-03-27. Retrieved 2018-01-17.
  16. ↑ "MME U84C00". 2008-06-22. Retrieved 2018-01-17.
  17. ↑ "Kombinat Mikroelektronik Erfurt" (in German). Archived from the original on 2007-09-27. Retrieved 2017-11-14.
  18. ↑ "Funkwerk Erfurt (FWE) Z80/Z80A". Silirium.ru. Retrieved 2018-03-21.
  19. ↑ "International Representatives and Distributors". Zilog, Inc. Archived from the original on 1996-12-12. Retrieved 2018-01-22.
  20. ↑ "80A-CPU MME" (in Russian). Музей электронных раритетов. Retrieved 2019-10-29.
  21. ↑ "Т34ВМ1" [T34VM1] (in Russian). Музей электронных раритетов. Retrieved 2019-10-29.
  22. 1 2 "1858ая серия" [1858 series] (in Russian). Музей электронных раритетов. Retrieved 2019-10-29.

Further reading

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.