The 8051-compatible microcontrollers are equipped with up to two inputs that may be used as general-purpose interrupts. A simple way to increase the number of interrupt inputs is shown in the figure.

Designers of microcontroller-based products that require a keypad for user data entry can select from dedicating an input line for each key, continuously polling the keypad's x and y lines, or ...

Austin, Texas — The new TK80C51FA microcontroller from Tekmos Inc. is designed as a replacement for ROMless 8051 series microcontrollers that have been obsoleted by other vendors. It is a pin-for-pin, ...