Datasheet

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