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| PIC18F2331_10 Datasheet, PDF (23/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D | |||
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PIC18F2331/2431/4331/4431
TABLE 1-3: PIC18F4331/4431 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
RD0/T0CKI/T5CKI
RD0
T0CKI
T5CKI
RD1/SDO
RD1
SDO(1)
RD2/SDI/SDA
RD2
SDI(1)
SDA(1)
RD3/SCK/SCL
RD3
SCK(1)
SCL(1)
Pin Number
Pin Buffer
PDIP TQFP QFN Type Type
Description
PORTD is a bidirectional I/O port.
19 38 38
I/O ST
I
ST
I
ST
Digital I/O.
Timer0 external clock input.
Timer5 input clock.
20 39 39
I/O ST
Oâ
Digital I/O.
SPI data out.
21 40 40
I/O ST
I
ST
I/O ST
Digital I/O.
SPI data in.
I2C⢠data I/O.
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(2)
27 2
2
I/O ST
I
ST
Digital I/O.
Fault interrupt input pin.
RD5/PWM4
RD5
PWM4(3)
28 3
3
I/O ST
Digital I/O.
O TTL PWM Output 4.
RD6/PWM6
RD6
PWM6
29 4
4
I/O ST
Digital I/O.
O TTL PWM Output 6.
RD7/PWM7
RD7
PWM7
30 5
5
I/O ST
Digital I/O.
O TTL PWM Output 7.
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.
ï£ 2010 Microchip Technology Inc.
DS39616D-page 23
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