PIC18F2331 Datasheet, PDF (19/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
TABLE 1-3: PIC18F4331/4431 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin Buffer
DIP TQFP QFN ^{Type Type}
Description
PORTC is a bidirectional I/O port.
RC0/T1OSO/T1CKI 15 32 34
RC0
I/O ST
T1OSO
O—
T1CKI
I ST
Digital I/O.
Timer1 oscillator output.
Timer1 external clock input.
RC1/T1OSI/CCP2/
FLTA
RC1
T1OSI
CCP2
FLTA
16 35 35
I/O ST
I CMOS
I/O ST
I ST
Digital I/O.
Timer1 oscillator input.
Capture2 input, Compare2 output, PWM2 output.
Fault interrupt input pin.
RC2/CCP1/FLTB
RC2
CCP1
FLTB
17 36 36
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
18 37 37
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 23 42 42
RC4
I/O ST
INT1
I ST
SDI
I ST
SDA
I/O ST
Digital I/O.
External interrupt 1.
SPI Data in.
I²C Data I/O.
RC5/INT2/SCK/SCL 24 43 43
RC5
I/O ST
INT2
I ST
SCK
I/O ST
SCL
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
25 44 44
I/O ST
O—
I/O ST
I ST
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
26 1
1
I/O ST
I ST
I/O ST
O—
Legend: TTL
ST
O
OD
= TTL compatible input
= Schmitt Trigger input with CMOS levels
= Output
= Open-Drain (no diode to VDD)
Digital I/O.
USART Asynchronous Receive.
USART Synchronous Data (see related TX/CK).
SPI Data out.
CMOS = CMOS compatible input or output
I
= Input
P
= Power
 2003 Microchip Technology Inc.
Preliminary
DS39616B-page 17