PIC16F913/914/916/917/946
TABLE 1-1:
PIC16F91X/946 PINOUT DESCRIPTIONS
Input Output
Name
Function
Description
Type Type
RA0/AN0/C1-/SEG12
RA0
AN0
TTL
AN
AN
—
CMOS General purpose I/O.
—
—
Analog input Channel 0.
C1-
Comparator 1 negative input.
LCD analog output.
SEG12
RA1
AN
RA1/AN1/C2-/SEG7
TTL
AN
AN
—
CMOS General purpose I/O.
AN1
—
—
Analog input Channel 1.
Comparator 2 negative input.
LCD analog output.
C2-
SEG7
RA2
AN
RA2/AN2/C2+/VREF-/COM2
TTL
AN
AN
AN
—
CMOS General purpose I/O.
AN2
—
—
Analog input Channel 2.
C2+
Comparator 2 positive input.
External A/D Voltage Reference – negative.
LCD analog output.
VREF-
COM2
RA3
—
AN
(1)
RA3/AN3/C1+/VREF+/COM3
SEG15
/
TTL
AN
AN
AN
—
CMOS General purpose I/O.
AN3
—
—
Analog input Channel 3.
C1+
Comparator 1 positive input.
External A/D Voltage Reference – positive.
LCD analog output.
VREF+
—
(1)
COM3
AN
AN
SEG15
RA4
—
LCD analog output.
RA4/C1OUT/T0CKI/SEG4
RA5/AN4/C2OUT/SS/SEG5
TTL
—
CMOS General purpose I/O.
CMOS Comparator 1 output.
C1OUT
T0CKI
SEG4
RA5
ST
—
Timer0 clock input.
LCD analog output.
—
AN
TTL
AN
—
CMOS General purpose I/O.
Analog input Channel 4.
CMOS Comparator 2 output.
AN4
—
C2OUT
SS
TTL
—
—
Slave select input.
LCD analog output.
SEG5
RA6
AN
RA6/OSC2/CLKOUT/T1OSO
RA7/OSC1/CLKIN/T1OSI
RB0/INT/SEG0
TTL
—
CMOS General purpose I/O.
XTAL Crystal/Resonator.
OSC2
CLKOUT
T1OSO
RA7
—
CMOS TOSC/4 reference clock.
XTAL Timer1 oscillator output.
CMOS General purpose I/O.
—
TTL
XTAL
ST
OSC1
CLKIN
T1OSI
RB0
—
—
—
Crystal/Resonator.
Clock input.
XTAL
TTL
ST
Timer1 oscillator input.
CMOS General purpose I/O. Individually enabled pull-up.
INT
—
External interrupt pin.
LCD analog output.
SEG0
—
AN
Legend: AN = Analog input or output
TTL = TTL compatible input
HV = High Voltage
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels P
XTAL = Crystal
OD = Open Drain
=
Power
Note 1: COM3 is available on RA3 for the PIC16F913/916 and on RD0 for the PIC16F914/917 and PIC16F946.
2: Pins available on PIC16F914/917 and PIC16F946 only.
3: Pins available on PIC16F946 only.
2
4: I C Schmitt trigger inputs have special input levels.
DS41250F-page 18
© 2007 Microchip Technology Inc.
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