PIC16F631_08 Datasheet, PDF (16/306 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F631/677/685/687/689/690
TABLE 1-1: PINOUT DESCRIPTION – PIC16F631
Name
Function
Input Output
Type Type
Description
RA0/C1IN+/ICSPDAT/ULPWU
RA0
RA1/C12IN0-/ICSPCLK
C1IN+
ICSPDAT
ULPWU
RA1
RA2/T0CKI/INT/C1OUT
C12IN0-
ICSPCLK
RA2
RA3/MCLR/VPP
T0CKI
INT
C1OUT
RA3
RA4/T1G/OSC2/CLKOUT
MCLR
VPP
RA4
RA5/T1CKI/OSC1/CLKIN
T1G
OSC2
CLKOUT
RA5
T1CKI
OSC1
CLKIN
RB4
RB4
RB5
RB5
RB6
RB6
RB7
RB7
RC0/C2IN+
RC0
C2IN+
RC1/C12IN1-
RC1
C12IN1-
RC2/C12IN2-
RC2
C12IN2-
RC3/C12IN3-
RC3
C12IN3-
RC4/C2OUT
RC4
C2OUT
RC5
RC5
Legend:
AN = Analog input or output
TTL = TTL compatible input
HV = High Voltage
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up.
AN
— Comparator C1 non-inverting input.
ST CMOS ICSP™ Data I/O.
AN
— Ultra Low-Power Wake-up input.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up.
AN
— Comparator C1 or C2 inverting input.
ST
— ICSP™ clock.
ST CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up.
ST
— Timer0 clock input.
ST
— External interrupt pin.
— CMOS Comparator C1 output.
TTL
— General purpose input. Individually controlled interrupt-on-
change.
ST
— Master Clear with internal pull-up.
HV
— Programming voltage.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up.
ST
— Timer1 gate input.
— XTAL Crystal/Resonator.
— CMOS FOSC/4 output.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up.
ST
— Timer1 clock input.
XTAL — Crystal/Resonator.
ST
— External clock input/RC oscillator connection.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up.
ST CMOS General purpose I/O.
AN
— Comparator C2 non-inverting input.
ST CMOS General purpose I/O.
AN
— Comparator C1 or C2 inverting input.
ST CMOS General purpose I/O.
AN
— Comparator C1 or C2 inverting input.
ST CMOS General purpose I/O.
AN
— Comparator C1 or C2 inverting input.
ST CMOS General purpose I/O.
— CMOS Comparator C2 output.
ST CMOS General purpose I/O.
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels
XTAL = Crystal
DS41262E-page 14
© 2008 Microchip Technology Inc.