PIC16F631/677/685/687/689/690
TABLE 1-5:
PINOUT DESCRIPTION – PIC16F690 (CONTINUED)
Input Output
Name
Function
Description
Type
Type
RB6/SCK/SCL
RB6
TTL
CMOS General purpose I/O. Individually controlled interrupt-on-
change. Individually enabled pull-up.
SCK
SCL
RB7
ST
ST
CMOS SPI clock.
2
OD
I C™ clock.
RB7/TX/CK
TTL
CMOS General purpose I/O. Individually controlled interrupt-on-
change. Individually enabled pull-up.
TX
CK
—
ST
ST
AN
AN
ST
AN
AN
ST
AN
AN
—
CMOS EUSART asynchronous output.
CMOS EUSART synchronous clock.
CMOS General purpose I/O.
RC0/AN4/C2IN+
RC0
AN4
—
—
A/D Channel 4 input.
C2IN+
RC1
Comparator C2 positive input.
RC1/AN5/C12IN1-
RC2/AN6/C12IN2-/P1D
CMOS General purpose I/O.
AN5
—
—
A/D Channel 5 input.
C12IN1-
RC2
Comparator C1 or C2 negative input.
CMOS General purpose I/O.
AN6
—
—
A/D Channel 6 input.
C12IN2-
P1D
Comparator C1 or C2 negative input.
CMOS PWM output.
RC3/AN7/C12IN3-/P1C
RC3
ST
AN
AN
—
CMOS General purpose I/O.
AN7
—
—
A/D Channel 7 input.
C12IN3-
P1C
Comparator C1 or C2 negative input.
CMOS PWM output.
RC4/C2OUT/P1B
RC5/CCP1/P1A
RC6/AN8/SS
RC4
ST
—
CMOS General purpose I/O.
CMOS Comparator C2 output.
CMOS PWM output.
C2OUT
P1B
—
RC5
ST
ST
ST
ST
AN
ST
ST
AN
—
CMOS General purpose I/O.
CMOS Capture/Compare input.
CMOS PWM output.
CCP1
P1A
RC6
CMOS General purpose I/O.
AN8
—
—
A/D Channel 8 input.
Slave Select input.
SS
RC7/AN9/SDO
RC7
CMOS General purpose I/O.
A/D Channel 9 input.
CMOS SPI data output.
AN9
—
SDO
VSS
VSS
VDD
Power
Power
—
—
Ground reference.
Positive supply.
VDD
Legend:
AN
TTL
HV
=
=
=
Analog input or output
TTL compatible input
High Voltage
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels
XTAL = Crystal
OD = Open Drain
© 2007 Microchip Technology Inc.
DS41262D-page 23