Check the listing for details. 1X PIC16C558-04/P Microchip EPROM Based 8 Bit CMOS Microcontroller 4MHz DIP-18. Condition: New. Listed at 4.40 USD. Technology CMOS. Bit Size 8. Number of I/O Lines 13. Pin Count 18. Limitation of Liability. No Critical-Application Use. Products may not be exported, re-exported, or transferred contrary to law. You are solely responsible for obtaining, installing, and licensing any firmware or software from lawful sources.