PIC16F720_13 Datasheet, PDF (9/254 Pages) Microchip Technology – 20-Pin Flash Microcontrollers

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
MCLR
TTL
— General purpose input-only with IOC and WPU.
ST
— Master Clear with internal pull-up.
VPP
HV
— Programming Voltage.
RA4/AN3/T1G/CLKOUT
RA4
AN3
TTL CMOS General purpose I/O with IOC and WPU.
AN
— A/D Channel 3 Input.
T1G
ST
— Timer1 Gate Input.
CLKOUT
—
CMOS FOSC/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
SDA
ST
— SPI Data Input.
I²C
OD I²C™ 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
SCL
ST
CMOS SPI Clock.
I²C
OD I²C™ 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, I²C™ = Schmitt Trigger input with I²C, HV = High Voltage,
XTAL = Crystal levels
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DS41430D-page 9