Datasheet

PIC18FXX2
DS39564C-page 16 © 2006 Microchip Technology Inc.
PORTD is a bi-directional 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 19 21 38 I/O ST
TTL
Digital I/O.
Parallel Slave Port Data.
RD1/PSP1 20 22 39 I/O ST
TTL
Digital I/O.
Parallel Slave Port Data.
RD2/PSP2 21 23 40 I/O ST
TTL
Digital I/O.
Parallel Slave Port Data.
RD3/PSP3 22 24 41 I/O ST
TTL
Digital I/O.
Parallel Slave Port Data.
RD4/PSP4 27 30 2 I/O ST
TTL
Digital I/O.
Parallel Slave Port Data.
RD5/PSP5 28 31 3 I/O ST
TTL
Digital I/O.
Parallel Slave Port Data.
RD6/PSP6 29 32 4 I/O ST
TTL
Digital I/O.
Parallel Slave Port Data.
RD7/PSP7 30 33 5 I/O ST
TTL
Digital I/O.
Parallel Slave Port Data.
PORTE is a bi-directional I/O port.
RE0/RD
/AN5
RE0
RD
AN5
8 9 25 I/O
ST
TTL
Analog
Digital I/O.
Read control for parallel slave port
(see also WR
and CS pins).
Analog input 5.
RE1/WR
/AN6
RE1
WR
AN6
9 10 26 I/O
ST
TTL
Analog
Digital I/O.
Write control for parallel slave port
(see CS
and RD pins).
Analog input 6.
RE2/CS
/AN7
RE2
CS
AN7
10 11 27 I/O
ST
TTL
Analog
Digital I/O.
Chip Select control for parallel slave port
(see related RD
and WR).
Analog input 7.
V
SS 12, 31 13, 34 6, 29 P — Ground reference for logic and I/O pins.
V
DD 11, 32 12, 35 7, 28 P — Positive supply for logic and I/O pins.
TABLE 1-3: PIC18F4X2 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
DIP PLCC 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
OD = Open Drain (no P diode to V
DD)