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PICkit™ 2 Programmer Overview. This chapter introduces the PICkit™ 2 Microcontroller Programmer and describes the PICkit™ 2 Microcontroller Programmer features and menu functions. The USB Port Connection is a USB mini-B connector. Connect the PICkit™ 2 Microcontroller Programmer to the PC using the supplied USB cable. The PICkit™ 2 Microcontroller Programmer can program PIC® microcontrollers that are installed in an application circuit using In-Circuit Serial Programming™ (ICSP™). In-Circuit Serial Programming (ICSP) requires five signals: • VPP – Programming Voltage; when applied, the device goes into Programming mode. • ICSPCLK or PGC – Programming Clock; a unidirectional synchronous serial clock line from the programmer to the target. • ICSPDAT or PGD – Programming Data; a bidirectional synchronous serial data line. • VDD – Power Supply positive voltage. • VSS – Power Supply ground reference. The application circuit typically is connected to a pull up resistor/capacitor circuit, as recommended in the device data sheet. Care must be taken so that the VPP voltage slew rate is not slowed down and exceeds the rise time in the programming specification (typically 1 ?s). The PICkit™ 2 Microcontroller Programmer allows in-circuit debugging on selected PIC® Microcontroller Units (MCUs). In-circuit debugging allows the designer to run, examine and modify the program while the PIC® MCU is embedded in the hardware. Troubleshooting : Why am I receiving a “No Device Found” message? Current Limit Exceeded, Verify and Read Return all Zeros.
Tags : serial clock line, serial data line, pic microcontroller, pic microcontrollers, pull up resistor, slew rate, application circuit, serial programming, ground reference, programming mode, menu functions, target, programming data, rise time, mcu
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