U880
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The U880 was an 8-bit microprocessor manufactured in the German Democratic Republic. It was manufactured in NMOS technology and encased in a DIL40 package.
The U880 CPU was used between 1985 and 1989 in the KC 85/2, KC 85/3 and KC 85/4 computers (manufactured by VEB Mikroelektronik "Wilhelm Pieck" Mühlhausen), in the Z1013 (manufactured by Robotron Riesa), and also in other office and amateur computers in the GDR.
The U880 is an identical copy of the Zilog's 8-bit Z80 microprocessor. It was developed and manufactured as a non-licensed reproduction by VEB Mikroelektronik "Karl Marx" (Erfurt). A pin and function-compatible CMOS processor system with the designation of U84C00 was also under development.
The variant UB880 corresponds to the original Z80 processor, the UA880 to a Z80A CPU and the VB880 to a Z80 version with extended temperature specification (-25°C to +85°C) for military and industrial applications. Reproductions of Zilog's peripheral components PIO (U 855), SIO (U 856), CTC (U 857), DMA (direct memory access) (U 858) and DART (U 8563) were also manufactured.
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