Datasheet covering the Microchip PIC18Fxx20 microcontroller family, a 7.04 MB PDF document. The xx in the name stands for several variants with different memory sizes and packages that share one reference. It describes pinouts, the PIC18 memory architecture, peripherals, interrupt system, programming interface and electrical characteristics. Technicians use it to identify pins on high pin-count packages, verify supply and clock circuits and find the ICSP lines needed to back up or reflash firmware with a programmer.
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