KR580VM80A
KR580VM80A CPU, Plastic DIP
|
|
| Produced | From c. 1979 to c. 1991 |
|---|---|
| Common manufacturer(s) |
|
| Max. CPU clock rate | 2 MHz to 2.5 MHz |
| Instruction set | pre x86 |
| Socket(s) |
|
The KR580VM80A (Russian: КР580ВМ80А) is a Soviet microprocessor, a clone of the Intel 8080 CPU. Different versions of this CPU were manufactured beginning in the late 1970s, the earliest known use being in the SM1800 computer in 1979. Production ceased with the fall of the USSR. Initially called the K580IK80 (К580ИК80), it was produced in a 48-pin planar metal-ceramic package. Later, a version in a PDIP-40 package was produced and was named the KR580IK80A (КР580ИК80А). The pin layout of the latter completely matched that of Intel's 8080A CPU. In 1986 this CPU received a new part number to conform with the 1980 Soviet integrated circuit designation and became known as the KR580VM80A (КР580ВМ80А), the number it is most widely known by today (the KR580VV51A and KR580VV55A peripheral devices went through similar revisions). Normal clock frequency for the K580IK80A is 2 MHz, with speeds up to 2.5 MHz for the KR580VM80A.
The KR580VM80A was manufactured with an n-MOS process. The pins were electrically compatible with TTL logic levels. The load capacity of each output pin was sufficient for one TTL input. The output capacitance of each control and data pins was ≤ 100pF each.
The family consists of the following chips:
For brevity, the table above lists only the chip variants in a plastic DIP (prefix КР) as well as the original planar package (prefix К). Not listed separately are variants in a ceramic DIP (prefix КМ for commercial version and prefix М or no prefix for the military version) or export variants (prefix ЭКР) in a plastic DIP but with a pin spacing of one tenth of an inch.
For the KR580VM1 (КР580ВМ1) see Further development below.
...
Wikipedia