Datasheet

 2010-2013 Microchip Technology Inc. DS40001430E-page 9
PIC16(L)F720/721
TABLE 1-1: PINOUT DESCRIPTION
Name Function
IN OUT
Description
RA0/AN0/ICSPDAT/ICDDAT
RA0 TTL CMOS
General purpose I/O. Individually controlled
interrupt-on-change. Individually enabled pull-up.
AN0 AN — A/D Channel 0 Input.
ICSPDAT ST CMOS ICSP™ Data I/O.
RA1/AN1/ICSPCLK/ICDCLK
RA1 TTL CMOS
General purpose I/O. Individually controlled
interrupt-on-change. Individually enabled pull-up.
AN1 AN — A/D Channel 1 Input.
ICSPCLK ST — ICSP™ Clock.
RA2/AN2/T0CKI/INT
RA2 TTL
CMOS
General purpose I/O with IOC and WPU.
AN2 AN — A/D Channel 2 Input.
T0CKI ST — Timer0 Clock Input.
INT ST — External interrupt.
RA3/MCLR
/VPP
RA3 TTL — General purpose input-only with IOC and WPU.
MCLR
ST — Master Clear with internal pull-up.
V
PP HV — Programming Voltage.
RA4/AN3/T1G
/CLKOUT
RA4 TTL CMOS General purpose I/O with IOC and WPU.
AN3 AN — A/D Channel 3 Input.
T1G
ST — Timer1 Gate Input.
CLKOUT — CMOS F
OSC/4 output.
RA5/T1CKI/CLKIN RA5 TTL CMOS General purpose I/O with IOC and WPU.
T1CKI ST — Timer1 Clock input.
CLKIN ST — External Clock Input (EC mode).
RB4/AN10/SDI/SDA RB4 TTL CMOS General purpose I/O with IOC and WPU.
AN10 AN — A/D Channel 10 Input.
SDI ST — SPI Data Input.
SDA I
2
CODI
2
C™ Data.
RB5/AN11/RX/DT RB5 TTL CMOS General purpose I/O with IOC and WPU.
AN11 AN — A/D Channel 11 Input.
RX ST — USART asynchronous input.
DT ST CMOS USART synchronous data.
RB6/SCK/SCL RB6 TTL CMOS General purpose I/O with IOC and WPU.
SCK ST CMOS SPI Clock.
SCL I
2
CODI
2
C™ Clock.
RB7/TX/CK RB7 TTL CMOS General purpose I/O with IOC and WPU.
TX — CMOS USART asynchronous transmit.
CK ST CMOS USART synchronous clock.
RC0/AN4 RC0 ST CMOS General purpose I/O.
AN4 AN — A/D Channel 4 Input.
RC1/AN5 RC1 ST CMOS General purpose I/O.
AN5 AN — A/D Channel 5 Input.
RC2/AN6 RC2 ST CMOS General purpose I/O.
AN6 AN — A/D Channel 6 Input.
RC3/AN7 RC3 ST CMOS General purpose I/O.
AN7 AN — A/D Channel 7 Input.
Legend: AN = Analog input or output, CMOS = CMOS compatible input or output, OD = Open Drain, TTL = TTL compatible
input, ST = Schmitt Trigger input with CMOS levels, I
2
C™ = Schmitt Trigger input with I
2
C, HV = High Voltage,
XTAL = Crystal levels