PIC18F258 Datasheet, PDF (15/384 Pages) Microchip Technology – High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN

PIC18FXX8
TABLE 1-2: PIC18FXX8 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
RC0/T1OSO/T1CKI
RC0
T1OSO
T1CKI
RC1/T1OSI
RC1
T1OSI
Pin Number
PIC18F248/258 PIC18F448/458
SPDIP, SOIC PDIP TQFP PLCC
Pin
Type
11
15
32
16
I/O
O
I
12
16
35
18
I/O
I
Buffer
Type
Description
PORTC is a bi-directional I/O port.
ST
Digital I/O.
—
Timer1 oscillator output.
ST
Timer1/Timer3 external clock
input.
ST
CMOS
Digital I/O.
Timer1 oscillator input.
RC2/CCP1
RC2
CCP1
RC3/SCK/SCL
RC3
SCK
SCL
RC4/SDI/SDA
RC4
SDI
SDA
13
17
36
19
I/O
ST
Digital I/O.
I/O
ST
Capture1 input/Compare1
output/PWM1 output.
14
18
37
20
I/O
ST
Digital I/O.
I/O
ST
Synchronous serial clock
input/output for SPI mode.
I/O
ST
Synchronous serial clock
input/output for I²C mode.
15
23
42
25
I/O
ST
Digital I/O.
I
ST
I/O
ST
SPI data in.
I²C data I/O.
RC5/SDO
RC5
SDO
16
24
43
26
I/O
ST
Digital I/O.
O
—
SPI data out.
RC6/TX/CK
RC6
TX
CK
17
25
44
27
I/O
ST
Digital I/O.
O
—
USART asynchronous
transmit.
I/O
ST
USART synchronous clock
(see RX/DT).
RC7/RX/DT
RC7
RX
DT
18
26
1
29
I/O
ST
Digital I/O.
I
ST
USART asynchronous receive.
I/O
ST
USART synchronous data
(see TX/CK).
Legend:
TTL =
ST =
I=
P=
TTL compatible input
Schmitt Trigger input with CMOS levels
Input
Power
CMOS =
Analog =
O
=
OD =
CMOS compatible input or output
Analog input
Output
Open Drain (no P diode to VDD)
 2002 Microchip Technology Inc.
Preliminary
DS41159B-page 13