Apparently those are derivative of a much newer controller, the Intel 8051 (1980), heavily modified, running at up to 450MHz, and with added hardware accelerato

Apparently those are derivative of a much newer controller, the Intel 8051 (1980), heavily modified, running at up to 450MHz, and with added hardware accelerators. https://en.wikipedia.org/wiki/Intel_MCS-51#Use_as_intellectual_property https://en.wikipedia.org/wiki/Intel_MCS-51#Use_as_intellectu...