37.3 Common Programming Interfaces

Connection to a target device is typically done through an ICSP header. A commonly found connector on development tools is the RJ-11 in the 6P6C (6-pin, 6-connector) configuration. See Figure 37-1.

Figure 37-1. ICD RJ-11 Style Connector Interface

Pin Description*

1 = V_PP/MCLR

2 = V_DD Target

3 = V_SS (ground)

4 = ICSPDAT

5 = ICSPCLK

6 = No Connect

Another connector often found in use with the PICkit™ programmers is a standard 6-pin header with 0.1 inch spacing. Refer to Figure 37-2.

For additional interface recommendations, refer to the specific device programmer manual prior to PCB design.

It is recommended that isolation devices be used to separate the programming pins from other circuitry. The type of isolation is highly dependent on the specific application and may include devices such as resistors, diodes, or even jumpers. See Figure 37-3 for more information.

Figure 37-2. PICkit™ Programmer Style Connector Interface