Debugger Connection To Target

6-pin RJ-11 or ICSP™ Header

Microchip Technology's in-circuit debugging system makes use of the In-Circuit Serial Programming (ICSP™) connection available on all One-Time Programmable (OTP) and Flash microcontrollers. The ICSP connection consists of a 6-pin cable, typically with an RJ-25 type modular connector (same as the RJ-11 American telephone jack but with all six conductors in use) or a simpler 6 x 1 pin header connector as seen on the PICkit™ 3 in-circuit debugger.

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The signals consist of Power, Ground, Clock, Data, Master Clear, and in some cases, Program Mode Enable (for Low Voltage Programming (LVP) on devices that support it).

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Signal Description
VPP / MCLR Programming Voltage and Master Clear
VDD Power
VSS Ground
PGD Data
PGC Clock
PGM LVP Program Enable

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