PIC16F946 Datasheet, PDF (9/274 Pages) Microchip Technology – 64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology

PIC16F946
TABLE 1-1: PIC16F946 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/Comparator 1 input – negative.
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/Comparator 2 input – negative.
C2-
—
AN Comparator 2 negative input.
SEG7
—
AN LCD analog output.
RA2/AN2/C2+/VREF-/COM2
RA2
TTL CMOS General purpose I/O.
AN2
AN
— Analog input Channel 2/Comparator 2 input – positive.
C2+
—
AN Comparator 2 positive input.
VREF-
AN
— External Voltage Reference – negative.
COM2 —
AN LCD analog output.
RA3/AN3/C1+/VREF+/SEG15
RA3
TTL CMOS General purpose I/O.
AN3
AN
— Analog input Channel 3/Comparator 1 input – positive.
C1+
—
AN Comparator 1 positive input.
VREF+
AN
— External Voltage Reference – positive.
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/CLKO/T1OSO
RA6
TTL CMOS General purpose I/O.
OSC2
— XTAL Crystal/Resonator.
CLKO
— CMOS TOSC/4 reference clock.
T1OSO — XTAL Timer1 oscillator output.
RA7/OSC1/CLKI/T1OSI
RA7
TTL CMOS General purpose I/O.
OSC1 XTAL — Crystal/Resonator.
CLKI
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.
RB1/SEG1
RB1
TTL CMOS General purpose I/O. Individually enabled pull-up.
SEG1
—
AN LCD analog output.
RB2/SEG2
RB2
TTL CMOS General purpose I/O. Individually enabled pull-up.
SEG2
—
AN LCD analog output.
Legend: AN = Analog input or output
TTL = TTL compatible input
HV = High Voltage
CMOS = CMOS compatible input or output D = Direct
ST = Schmitt Trigger input with CMOS levels
XTAL = Crystal
© 2005 Microchip Technology Inc.
Preliminary
DS41265A-page 7