The Dallas 87C520 was one of the greatest
evolutions of the Famous Intel MCS-51 microcontroller, a chip, released
in 1980, that continues to be made, and continues to power millions of
electronic devices that we use every day.
Dallas was one of the first
companies to enhance it, speed it up, and add features in the 1990's
ensuring many more decades of use. This is an original Dallas
Semiconductor wafer full of dies from this microcontroller.
