The MCS 151 and 251 cores are binary-code-compatible with the 8051. (The 251 has additional instructions.) The 151 maintains the 80C51 accumulator-based core compatibility, and the 251 is a ...
The intel 8051 series 8bit microcontroller, originally introduced in 1980, remains popular and has had perhaps the longest product life of all such devices. It has become the industry standard for ...