PIC16F722AT-ISS Datasheet, PDF (50/286 Pages) Microchip Technology – 28-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16(L)F722A/723A
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:
• General purpose I/O
• Analog input for the ADC
• Slave select input for the SSP⁽¹⁾
• Voltage regulator capacitor pin (PIC16F722A/
723A only)
Note 1: SS pin location may be selected as RA5
or RA0.
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:
• General purpose I/O
• 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:
• General purpose I/O
• 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:
• General purpose I/O
• Analog input for the ADC
• 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:
• General purpose I/O
• Capacitive sensing input
• 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:
• General purpose I/O
• Analog input for the ADC
• Capacitive sensing input
• Slave select input for the SSP⁽¹⁾
• Voltage regulator capacitor pin (PIC16F722A/
723A only)
Note 1: SS pin location may be selected as RA5
or RA0.
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:
• General purpose I/O
• Crystal/resonator connection
• Clock output
• Voltage regulator capacitor pin (PIC16F722A/
723A 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:
• General purpose I/O
• Crystal/resonator connection
• Clock input
DS41417B-page 50
 2010-2012 Microchip Technology Inc.