PIC16F631_08 Datasheet, PDF (4/306 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F631/677/685/687/689/690
Device
Program
Memory
Flash
Data Memory
SRAM EEPROM
I/O
10-bit A/D
(ch)
Comparators
Timers
8/16-bit
(words) (bytes) (bytes)
PIC16F631 1024
64
128 18
—
2
1/1
PIC16F677 2048
128
256 18
12
2
1/1
PIC16F685 4096
256
256 18
12
2
2/1
PIC16F687 2048
128
256 18
12
2
1/1
PIC16F689 4096
256
256 18
12
2
1/1
PIC16F690 4096
256
256 18
12
2
2/1
SSP ECCP+ EUSART
No No
No
Yes No
No
No Yes
No
Yes No
Yes
Yes No
Yes
Yes Yes
Yes
PIC16F631 Pin Diagram
20-pin PDIP, SOIC, SSOP
VDD
RA5/T1CKI/OSC1/CLKIN
RA4/T1G/OSC2/CLKOUT
RA3/MCLR/VPP
RC5
RC4/C2OUT
RC3/C12IN3-
RC6
RC7
RB7
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VSS
RA0/C1IN+/ICSPDAT/ULPWU
RA1/C12IN0-/ICSPCLK
RA2/T0CKI/INT/C1OUT
RC0/C2IN+
RC1/C12IN1-
RC2/C12IN2-
RB4
RB5
RB6
TABLE 1:
PIC16F631 PIN SUMMARY
I/O Pin
Analog
Comparators Timers
Interrupt
RA0 19
RA1 18
RA2 17
RA3 4
AN0/ULPWU
AN1
—
—
C1IN+
C12IN0-
C1OUT
—
—
—
T0CKI
—
IOC
IOC
IOC/INT
IOC
RA4 3
—
RA5 2
—
RB4 13
—
RB5 12
—
RB6 11
—
RB7 10
—
RC0 16
AN4
RC1 15
AN5
RC2 14
AN6
RC3 7
AN7
RC4 6
—
RC5 5
—
RC6 8
—
RC7 9
—
—
1
—
— 20
—
—
T1G
IOC
—
T1CKI
IOC
—
—
IOC
—
—
IOC
—
—
IOC
—
—
IOC
C2IN+
—
—
C12IN1-
—
—
C12IN2-
—
—
C12IN3-
—
—
C2OUT
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Note 1: Pull-up enabled only with external MCLR configuration.
Pull-up
Y
Y
Y
Y⁽¹⁾
Y
Y
Y
Y
Y
Y
—
—
—
—
—
—
—
—
—
—
Basic
ICSPDAT
ICSPCLK
—
MCLR/VPP
OSC2/CLKOUT
OSC1/CLKIN
—
—
—
—
—
—
—
—
—
—
—
—
VDD
VSS
DS41262E-page 2
© 2008 Microchip Technology Inc.