U80701 Explained

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 (CQFP-68 package).^[1]

Microprocessor

The U80701 was developed by reverse engineering the MicroVAX 78032 microprocessor of the Digital Equipment Corporation (DEC). It is used in the Robotron K 1820 minicomputer - a clone of the DEC MicroVAX II.^[2]

The microprocessor used the 40 MHz input clock.^[3]

The U80700 system includes the following chips:

• U80701: CPU (DC333)
• U80703: FPU (DC337)
• U80707: Console interface/controller DLART (DC319)
• U80709: CPU interface gate array (DC379)
• U80711: Q22-Bus interface gate array (DC380)

External links

• Chip photos of the DEC 78032 and U80701
• Soviet, MicroVAX II compatible mainboard with U80701FC

Notes and References

1. Applikationszentrum Elektronik: Microelectronics general overview. (PDF in German language; 1,1 MB) Info-Verlag electronic, Berlin 1990, S. 236.
2. Specification book Workstation 32 bit K 1820 based on the microprocessor family MP 700 (PDF in German language 4,8 MB). VVS d 063–247/89, VEB Robotron-Elektronik Dresden, March 1989, Saxon Main State Archive, Dresden 11594-1361/1-2 .
3. Book: Electronics . McGraw-Hill . 62 . 1989 . 2024-08-21.