Full 5.89 MB PDF datasheet for the Microchip PIC18Fxx39 group of 8-bit flash microcontrollers, a family that includes on-chip motor control features. The xx placeholder means several memory and pin-count variants share one document, so match your chip marking against the device table. Contents cover pinouts, PWM and motor control modules, memory maps, programming interface and electrical characteristics. It helps trace drive signals in motor controllers and identify the ICSP pins for backing up or reflashing firmware.
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