1.3.3 Additional GPIOs

Optional GPIOs of the PIC32CX1025SG41 microcontroller that have not been used elsewhere in the design have been brought out to an 8-pin, 50 mil pitch header (J401). This header is unpopulated but can be mounted by the user. The available signals can be used as GPIOs, interrupt signals, analog inputs, peripheral touch control (PTC) inputs, or timing control. The following details list the possible usage option for each of the signals. See the PIC32CX1025SG41 data sheet for more detailed information.

Connector: 1x8 50 mil pitch Manufacturer: Sullins Part #: LPPB081NFFN-RC

Table 1-9. J401 Signal Connections
Connector Pin #	Pin Number	Pin Name	Usage Options
1	96	PB31	GPIO, EXTINT[15], Timing Control
2	97	PB00	GPIO, EXTINT[0],ADC0-AIN[12], PTC-X30/Y30, Timing Control
3	100	PB03	GPIO, EXTINT[3],ADC0-AIN[15], PTC-X21/Y21, Timing Control
4	6	PC03	GPIO, EXTINT[3],ADC1-AIN[5]
5	9	PB04	GPIO, EXTINT[4],ADC1-AIN[6], PTC- X22/Y22
6	10	PB05	GPIO, EXTINT[5], ADC1-AIN[7], PTC X23,Y23
7	14	PB07	GPIO, EXTINT[7], ADC1-AIN[9], PTC X23,Y23
8	23	PC07	GPIO, EXTINT[9]