If you’ve scavenged some random keypads and want to reuse them in a project without the hassle of figuring out the pinouts, then [Cliff Biffle] has an interface module for you. The Keypad Go connects ...
This application note explains the use of MSSP module to interface SPIâ„¢ serial EEPROMs with PIC18 devices. This document include the firmware description, initialization, write enable, read status ...