The new Single-Wire On-chip Rapid Debugging (SWORD™) interface for the R8051XC2™ microcontroller core connects the 8051 to its debugging unit with just one IC debug port. The popular Joint Test Action ...

The M8051 is a configurable soft-core implementation of the industry standard 8051 microcontroller that features a clock compatible twelve clocks per machine cycle architecture. This microcode-free ...

A while back, [Matt] bought a few 8051 MCUs and tucked them away for ... you realize this 30-year-old chip has 32 IO pins. This microcontroller, along with its bigger brother the 8052, served ...

Choosing a microcontroller is a matter of convenience, but it doesn’t have to be this way. There are dozens of different ARM cores alone, hundreds of 8051 clones, and weirder stuff including the ...