PIC18F2331 Datasheet, PDF (16/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
TABLE 1-2: PIC18F2331/2431 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin
Number ^{Pin Buffer}
Type Type
DIP SOIC
Description
PORTC is a bidirectional I/O port.
RC0/T1OSO/T1CKI
RC0
T1OSO
T1CKI
11 11
I/O ST
O—
I ST
Digital I/O.
Timer1 oscillator output.
Timer1 external clock input.
RC1/T1OSI/CCP2/FLTA
RC1
T1OSI
CCP2
FLTA
12 12
I/O ST
Digital I/O.
I CMOS Timer1 oscillator input.
I/O ST
Capture2 input, Compare2 output, PWM2 output.
I
ST
Fault interrupt input pin.
RC2/CCP1/FLTB
RC2
CCP1
FLTB
13 13
I/O ST
I/O ST
I ST
Digital I/O.
Capture1 input/Compare1 output/PWM1 output.
Fault interrupt input pin,.
RC3/T0CKI/T5CKI/INT0
RC3
T0CKI
T5CKI
INT0
14 14
I/O ST
I ST
I ST
I ST
Digital I/O.
Timer0 alternate clock input.
Timer5 alternate clock input.
External interrupt 0.
RC4/INT1/SDI/SDA
RC4
INT1
SDI
SDA
15 15
I/O ST
I ST
I ST
I/O ST
Digital I/O.
External interrupt 1.
SPI™ data in.
I²C™ data I/O.
RC5/INT2/SCK/SCL
RC5
INT2
SCK
SCL
16 16
I/O ST
I ST
I/O ST
I/O ST
Digital I/O.
External interrupt 2.
Synchronous serial clock input/output for SPI mode.
Synchronous serial clock input/output for I²C mode.
RC6/TX/CK/SS
RC6
TX
CK
SS
17 17
I/O ST
O—
I/O ST
I TTL
Digital I/O.
USART Asynchronous Transmit.
USART Synchronous Clock (see related RX/DT).
SPI Slave Select input.
RC7/RX/DT/SDO
RC7
RX
DT
SDO
18 18
I/O ST
I ST
I/O ST
O—
Digital I/O.
USART Asynchronous Receive.
USART Synchronous Data (see related TX/CK).
SPI data out.
VSS
8, 19 8, 19 P — Ground reference for logic and I/O pins.
VDD
7, 20 7, 20 P — Positive supply for logic and I/O pins.
Legend: TTL
ST
O
OD
= TTL compatible input
= Schmitt Trigger input with CMOS levels
= Output
= Open-Drain (no diode to VDD)
CMOS = CMOS compatible input or output
I
= Input
P
= Power
DS39616B-page 14
Preliminary
 2003 Microchip Technology Inc.