PIC18F4321 Datasheet, PDF (22/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F4321 FAMILY
TABLE 1-3: PIC18F4221/4321 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin Buffer
PDIP QFN TQFP ^{Type Type}
Description
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 the PSP
module is enabled.
RD0/PSP0
RD0
PSP0
19 38 38
I/O ST
I/O TTL
Digital I/O.
Parallel Slave Port data.
RD1/PSP1
RD1
PSP1
20 39 39
I/O ST
I/O TTL
Digital I/O.
Parallel Slave Port data.
RD2/PSP2
RD2
PSP2
21 40 40
I/O ST
I/O TTL
Digital I/O.
Parallel Slave Port data.
RD3/PSP3
RD3
PSP3
22 41 41
I/O ST
I/O TTL
Digital I/O.
Parallel Slave Port data.
RD4/PSP4
RD4
PSP4
27 2
2
I/O ST
Digital I/O.
I/O TTL Parallel Slave Port data.
RD5/PSP5/P1B
RD5
PSP5
P1B
28 3
3
I/O ST
Digital I/O.
I/O TTL Parallel Slave Port data.
O
—
Enhanced CCP1 output.
RD6/PSP6/P1C
RD6
PSP6
P1C
29 4
4
I/O ST
Digital I/O.
I/O TTL Parallel Slave Port data.
O
—
Enhanced CCP1 output.
RD7/PSP7/P1D
RD7
PSP7
P1D
30 5
5
I/O ST
Digital I/O.
I/O TTL Parallel Slave Port data.
O
—
Enhanced CCP1 output.
Legend: TTL = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
I²C = ST with I²C™ or SMB levels
CMOS = CMOS compatible input or output
I
= Input
P = Power
O = Output
Note 1: Default assignment for CCP2 when Configuration bit, CCP2MX, is set.
2: Alternate assignment for CCP2 when Configuration bit, CCP2MX, is cleared.
3: Special ICPORT features available in select circumstances. See Section 23.9 “Special ICPORT Features
(44-Pin TQFP Packages Only)” for more information.
DS39689E-page 20
Preliminary
© 2007 Microchip Technology Inc.