PIC16F722-ESLASHML datasheet(56/302 Pages) MICROCHIP

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PIC16F72X/PIC16LF72X

DS41341E-page 56

6.2.2

PIN DESCRIPTIONS AND

DIAGRAMS

Each PORTA pin is multiplexed with other functions. The

pins and their combined functions are briefly described

here. For specific information about individual functions

such as the A/D Converter (ADC), refer to the

appropriate section in this data sheet.

6.2.2.1

RA0/AN0/SS/VCAP

Figure 6-1 shows the diagram for this pin. This pin is

configurable to function as one of the following:

• a general purpose I/O

• an analog input for the ADC

• a slave select input for the SSP(1)

• a Voltage Regulator Capacitor pin (PIC16F72X

only)

6.2.2.2

RA1/AN1

Figure 6-2 shows the diagram for this pin. This pin is

configurable to function as one of the following:

• a general purpose I/O

• an analog input for the ADC

6.2.2.3

RA2/AN2

Figure 6-2 shows the diagram for this pin. This pin is

configurable to function as one of the following:

• a general purpose I/O

• an analog input for the ADC

6.2.2.4

RA3/AN3/VREF

Figure 6-2 shows the diagram for this pin. This pin is

configurable to function as one of the following:

• a general purpose I/O

• an analog input for the ADC

• a voltage reference input for the ADC

6.2.2.5

RA4/CPS6/T0CKI

Figure 6-3 shows the diagram for this pin. This pin is

configurable to function as one of the following:

• a general purpose I/O

• a capacitive sensing input

• a clock input for Timer0

The Timer0 clock input function works independently

of any TRIS register setting. Effectively, if TRISA4 = 0,

the PORTA4 register bit will output to the pad and

Clock Timer0 at the same time.

6.2.2.6

RA5/AN4/CPS7/SS/VCAP

Figure 6-4 shows the diagram for this pin. This pin is

configurable to function as one of the following:

• a general purpose I/O

• an analog input for the ADC

• a capacitive sensing input

• a slave select input for the SSP(1)

• a Voltage Regulator Capacitor pin (PIC16F72X

only)

6.2.2.7

RA6/OSC2/CLKOUT/VCAP

Figure 6-5 shows the diagram for this pin. This pin is

configurable to function as one of the following:

• a general purpose I/O

• a crystal/resonator connection

• a clock output

• a Voltage Regulator Capacitor pin (PIC16F72X

only)

6.2.2.8

RA7/OSC1/CLKIN

Figure 6-6 shows the diagram for this pin. This pin is

configurable to function as one of the following:

• a general purpose I/O

• a crystal/resonator connection

• a clock input

Note 1: SS pin location may be selected as RA5

or RA0.

Note 1: SS pin location may be selected as RA5

or RA0.

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