The Microchip's MPLAB PICkit4 In-Circuit Programmer (ICSP) should be connected to a PIC MCU as shown in the following diagram. The programmer has 8 pins but only the first 5 pins are used for this connection. The pin number 1 on the programmer can be identified with the arrow symbol on the program as shown below. (PICkit4 Programmer*) Short male-to-male jumper wires can be used to create the 5-wire connection as follows. The programming might be successful without connecting the recommended 50 kohm resistor between the MCLR and VDD pins, but it is a good idea to follow the recommendations. * The Microchip name and logo, the Microchip logo, MPLAB and PICkit are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
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