PIC18F2331 Datasheet, PDF (20/396 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
PORTD is a bidirectional I/O port, or a Parallel Slave Port
(PSP) for interfacing to a microprocessor port. These pins
have TTL input buffers when PSP module is enabled.
RD0/T0CKI/T5CKI
RD0
T0CKI
T5CKI
19 38 38
I/O ST
I ST
I ST
Digital I/O.
Timer0 external clock input.
Timer5 input clock.
RD1/SDO
RD1
SDO
20 39 39
I/O ST
O—
Digital I/O.
SPI Data out.
RD2/SDI/SDA
RD2
SDI
SDA
21 40 40
I/O ST
I ST
I/O ST
Digital I/O.
SPI Data in.
I²C Data I/O.
RD3/SCK/SCL
RD3
SCK
SCL
22 41 41
I/O ST
I/O ST
I/O ST
Digital I/O.
Synchronous serial clock input/output for SPI mode.
Synchronous serial clock input/output for I²C mode.
RD4/FLTA
RD4
FLTA
27 2
2
I/O ST
I ST
Digital I/O.
Fault interrupt input pin.
RD5/PWM4
RD5
PWM4
28 3
3
I/O ST
O TTL
Digital I/O.
PWM output 4.
RD6/PWM6
RD6
PWM6
29 4
4
I/O ST
O TTL
Digital I/O.
PWM output 6.
RD7/PWM7
RD7
PWM7
Legend: TTL
ST
O
OD
30 5
5
I/O ST
O TTL
= TTL compatible input
= Schmitt Trigger input with CMOS levels
= Output
= Open-Drain (no diode to VDD)
Digital I/O.
PWM output 7.
CMOS = CMOS compatible input or output
I
= Input
P
= Power
DS39616B-page 18
Preliminary
 2003 Microchip Technology Inc.