A 1.17 MB PDF datasheet for the Microchip PIC16F6xx flash microcontrollers, with the name indicating a family placeholder rather than a single part number. Check the contents to see which specific devices are covered. The document provides pinouts, memory maps, comparator and timer details, and electrical characteristics useful when examining small control boards. For repairs, verify supply and clock pins first, and match the package and exact marking on the chip to the listed devices before reprogramming through ICSP.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @datasheet. Enginerys does not host this file.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.