
PIC18FXX8
DS41159E-page 14
2006 Microchip Technology Inc.
PORTD is a bidirectional I/O port.
These pins have TTL input buffers
when external memory is enabled.
RD0/PSP0/C1IN+
RD0
PSP0
C1IN+
—
193821
I/O
I
ST
TTL
Analog
Digital I/O.
Parallel Slave Port data.
Comparator 1 input.
RD1/PSP1/C1IN-
RD1
PSP1
C1IN-
—
203922
I/O
I
ST
TTL
Analog
Digital I/O.
Parallel Slave Port data.
Comparator 1 input.
RD2/PSP2/C2IN+
RD2
PSP2
C2IN+
—
214023
I/O
I
ST
TTL
Analog
Digital I/O.
Parallel Slave Port data.
Comparator 2 input.
RD3/PSP3/C2IN-
RD3
PSP3
C2IN-
—
224124
I/O
I
ST
TTL
Analog
Digital I/O.
Parallel Slave Port data.
Comparator 2 input.
RD4/PSP4/ECCP1/
P1A
RD4
PSP4
ECCP1
P1A
—27
2
30
I/O
O
ST
TTL
ST
—
Digital I/O.
Parallel Slave Port data.
ECCP1 capture/compare.
ECCP1 PWM output A.
RD5/PSP5/P1B
RD5
PSP5
P1B
—28
3
31
I/O
O
ST
TTL
—
Digital I/O.
Parallel Slave Port data.
ECCP1 PWM output B.
RD6/PSP6/P1C
RD6
PSP6
P1C
—29
4
32
I/O
O
ST
TTL
—
Digital I/O.
Parallel Slave Port data.
ECCP1 PWM output C.
RD7/PSP7/P1D
RD7
PSP7
P1D
—30
5
33
I/O
O
ST
TTL
—
Digital I/O.
Parallel Slave Port data.
ECCP1 PWM output D.
TABLE 1-2:
PIC18FXX8 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
PIC18F248/258
PIC18F448/458
SPDIP, SOIC
PDIP
TQFP
PLCC
Legend: TTL = TTL compatible input
CMOS = CMOS compatible input or output
ST
= Schmitt Trigger input with CMOS levels
Analog = Analog input
I
= Input
O
= Output
P
= Power
OD
= Open-Drain (no P diode to VDD)