PIC18F2331_10 Datasheet, PDF (20/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

PIC18F2331/2431/4331/4431
TABLE 1-3: PIC18F4331/4431 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin Buffer
PDIP TQFP QFN ^{Type Type}
Description
PORTA is a bidirectional I/O port.
RA0/AN0
RA0
AN0
2 19 19
I/O TTL Digital I/O.
I Analog Analog Input 0.
RA1/AN1
RA1
AN1
3 20 20
I/O TTL Digital I/O.
I Analog Analog Input 1.
RA2/AN2/VREF-/CAP1/ 4 21 21
INDX
RA2
I/O TTL Digital I/O.
AN2
I Analog Analog Input 2.
VREF-
I Analog A/D reference voltage (low) input.
CAP1
I
ST
Input Capture Pin 1.
INDX
I
ST
Quadrature Encoder Interface index input pin.
RA3/AN3/VREF+/
CAP2/QEA
RA3
AN3
VREF+
CAP2
QEA
5 22 22
I/O TTL
I Analog
I Analog
I
ST
I
ST
Digital I/O.
Analog Input 3.
A/D reference voltage (high) input.
Input Capture Pin 2.
Quadrature Encoder Interface Channel A input pin.
RA4/AN4/CAP3/QEB 6
RA4
AN4
CAP3
QEB
23 23
I/O TTL Digital I/O.
I Analog Analog Input 4.
I
ST
Input Capture Pin 3.
I
ST
Quadrature Encoder Interface Channel B input pin.
RA5/AN5/LVDIN
RA5
AN5
LVDIN
7 24 24
I/O TTL Digital I/O.
I Analog Analog Input 5.
I Analog Low-Voltage Detect input.
Legend:
Note 1:
TTL = TTL compatible input
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels
I
= Input
O = Output
P
= Power
RC3 is the alternate pin for T0CKI/T5CKI; RC4 is the alternate pin for SDI/SDA; RC5 is the alternate pin
for SCK/SCL; RC7 is the alternate pin for SDO.
2: RD4 is the alternate pin for FLTA.
3: RD5 is the alternate pin for PWM4.
DS39616D-page 20
 2010 Microchip Technology Inc.