Datasheet

PIC18F2XK20/4XK20
DS41303G-page 24  2010 Microchip Technology Inc.
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/PSP0
RD0
PSP0
19 38 38
I/O
I/O
ST
TTL
Digital I/O
Parallel Slave Port data
RD1/PSP1
RD1
PSP1
20 39 39
I/O
I/O
ST
TTL
Digital I/O
Parallel Slave Port data
RD2/PSP2
RD2
PSP2
21 40 40
I/O
I/O
ST
TTL
Digital I/O
Parallel Slave Port data
RD3/PSP3
RD3
PSP3
22 41 41
I/O
I/O
ST
TTL
Digital I/O
Parallel Slave Port data
RD4/PSP4
RD4
PSP4
27 2 2
I/O
I/O
ST
TTL
Digital I/O
Parallel Slave Port data
RD5/PSP5/P1B
RD5
PSP5
P1B
28 3 3
I/O
I/O
O
ST
TTL
—
Digital I/O
Parallel Slave Port data
Enhanced CCP1 output
RD6/PSP6/P1C
RD6
PSP6
P1C
29 4 4
I/O
I/O
O
ST
TTL
—
Digital I/O
Parallel Slave Port data
Enhanced CCP1 output
RD7/PSP7/P1D
RD7
PSP7
P1D
30 5 5
I/O
I/O
O
ST
TTL
—
Digital I/O
Parallel Slave Port data
Enhanced CCP1 output
TABLE 1-3: PIC18F4XK20 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
PDIP QFN TQFP
Legend: TTL = TTL compatible input CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels I = Input
O = Output P = Power
Note 1: Default assignment for CCP2 when Configuration bit CCP2MX is set.
2: Alternate assignment for CCP2 when Configuration bit CCP2MX is cleared.