THE INTEL 8085 processors

The Intel 8085
General
General Information
The 8085 was the follow-on processor to the very successful Intel 8080A processor. The 8085 got its name because it was Intel's first 5 volt microprocessor. The 8085 was 100% software compatible with the 8080A with increased systems performance. The initial 8085's were based on NMOS technology and the later "H" versions were based on HMOS technology.
The 8085 incorporated all the features of the 8224 (clock generator) and the 8228 (system controller) increasing the level of system integration. The 8085 along with and 8156 RAM and 8355/8755 ROM/PROM constituted a complete system. The 8085 used a multiplexed Data Bus and required the 825X-5 support chips. The address was split between the 8-bit address bus and 8-bit data bus. The on-chip address latch of 8155/8355/8755 memory chips allowed a direct interface with the 8085.
The 8085 family is also referred to as the MCS-85.
Production
April, 1976
Designers
Unknown
Architecture
Type
Data Word
Address Space
Clock
Instruct- ions
Assists
Reg's GP
Reg's Math
Reg's Index
IO Ports
Stack
Interrupts
Memory
NMOS & HMOS,
CPU


Related Chips
Related Chips
Intel 8080
Second Sources
AMD, National Semiconductor