PIC microchips 12C508, 12C508A, 12C509, 12C509A, 12F508, and 12F629 are all cross-compatible as they have the same pinout as each other.
– SCPH-7502 / PU-22
Am I missing any models? Send me a message via the contact page and I’ll put a guide together for the particular model and chip you have! 🙂