1.2 Pin Utilization

Five pins are needed for ICSP programming. The pins are listed in Table 1-1. For pin locations and packaging information, refer to Table 6-1.

Table 1-1. Pin Descriptions During Programming
Pin Name	During Programming
Pin Name	Function	Pin Type	Pin Description
ISCPCLK	ICSPCLK	I	Clock Input – Schmitt Trigger Input
ISCPDAT	ICSPDAT	I/O	Data Input/Output – Schmitt Trigger Input
MCLR/V_PP	Program/Verify mode	I⁽¹⁾	Program Mode Select
V_DD	V_DD	P	Power Supply
V_SS	V_SS	P	Ground
Legend: I = Input, O = Output, P = Power Note: Programming high voltage is internally generated. To activate the Program/Verify mode, a high voltage needs to be applied to the MCLR input. Since the MCLR is used for a level source, MCLR does not draw any significant current.