PIC18F2220 Datasheet, PDF (15/388 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F2220/2320/4220/4320
TABLE 1-2: PIC18F2220/2320 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number _{Pin Buffer}
PDIP SOIC ^{Type Type}
Description
RC0/T1OSO/T1CKI
RC0
T1OSO
T1CKI
RC1/T1OSI/CCP2
RC1
T1OSI
CCP2⁽²⁾
RC2/CCP1/P1A
RC2
CCP1
P1A
RC3/SCK/SCL
RC3
SCK
SCL
RC4/SDI/SDA
RC4
SDI
SDA
RC5/SDO
RC5
SDO
RC6/TX/CK
RC6
TX
CK
RC7/RX/DT
RC7
RX
DT
PORTC is a bidirectional I/O port.
11 11
I/O ST
O—
I
ST
Digital I/O.
Timer1 oscillator output.
Timer1/Timer3 external clock input.
12 12
I/O ST
I CMOS
I/O ST
Digital I/O.
Timer1 oscillator input.
Capture2 input, Compare2 output, PWM2 output.
13 13
I/O ST
I/O ST
O—
Digital I/O.
Capture1 input/Compare1 output/PWM1 output.
Enhanced CCP1 output.
14 14
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.
15 15
I/O ST
I
ST
I/O ST
Digital I/O.
SPI data in.
I²C data I/O.
16 16
I/O ST
O—
Digital I/O.
SPI data out.
17 17
I/O ST
O—
I/O ST
Digital I/O.
USART asynchronous transmit.
USART synchronous clock (see related RX/DT).
18 18
I/O ST
I
ST
I/O ST
Digital I/O.
USART asynchronous receive.
USART synchronous data (see related TX/CK).
RE3
— — — — See MCLR/VPP/RE3 pin.
VSS
8, 19 8, 19 P
— Ground reference for logic and I/O pins.
VDD
20 20 P
— Positive supply for logic and I/O pins.
Legend:
TTL = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
O = Output
OD = Open-drain (no diode to VDD)
CMOS = CMOS compatible input or output
I
= Input
P = Power
Note 1: Default assignment for CCP2 when CCP2MX (CONFIG3H<0>) is set.
2: Alternate assignment for CCP2 when CCP2MX is cleared.
 2003 Microchip Technology Inc.
DS39599C-page 13