PIC18F2455_07 Datasheet, PDF (23/430 Pages) Microchip Technology – 28/40/44-Pin, High Performance, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

PIC18F2455/2550/4455/4550
TABLE 1-3: PIC18F4455/4550 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin Buffer
PDIP QFN TQFP ^{Type Type}
Description
RE0/AN5/CK1SPP
RE0
AN5
CK1SPP
RE1/AN6/CK2SPP
RE1
AN6
CK2SPP
RE2/AN7/OESPP
RE2
AN7
OESPP
PORTE is a bidirectional I/O port.
8 25 25
I/O ST Digital I/O.
I Analog Analog input 5.
O—
SPP clock 1 output.
9 26 26
I/O ST Digital I/O.
I Analog Analog input 6.
O—
SPP clock 2 output.
10 27 27
I/O ST Digital I/O.
I Analog Analog input 7.
O—
SPP output enable output.
RE3
— — — — — See MCLR/VPP/RE3 pin.
VSS
12, 31 6, 30, 6, 29 P — Ground reference for logic and I/O pins.
31
VDD
11, 32 7, 8, 7, 28 P — Positive supply for logic and I/O pins.
28, 29
VUSB
NC/ICCK/ICPGC⁽³⁾
ICCK
ICPGC
NC/ICDT/ICPGD⁽³⁾
ICDT
ICPGD
18 37 37 O — Internal USB 3.3V voltage regulator output.
— — 12
No Connect or dedicated ICD/ICSP™ port clock.
I/O ST
In-Circuit Debugger clock.
I/O ST
ICSP programming clock.
— — 13
No Connect or dedicated ICD/ICSP port clock.
I/O ST
In-Circuit Debugger data.
I/O ST
ICSP programming data.
NC/ICRST/ICVPP⁽³⁾
ICRST
ICVPP
NC/ICPORTS⁽³⁾
ICPORTS
— — 33
No Connect or dedicated ICD/ICSP port Reset.
I
—
Master Clear (Reset) input.
P—
Programming voltage input.
— — 34 P — No Connect or 28-pin device emulation.
Enable 28-pin device emulation when connected
to VSS.
NC
— 13 — — — No Connect.
Legend: TTL = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
O = Output
CMOS = CMOS compatible input or output
I
= Input
P
= Power
Note 1: Alternate assignment for CCP2 when CCP2MX Configuration bit is cleared.
2: Default assignment for CCP2 when CCP2MX Configuration bit is set.
3: These pins are No Connect unless the ICPRT Configuration bit is set. For NC/ICPORTS, the pin is No
Connect unless ICPRT is set and the DEBUG Configuration bit is cleared.
© 2007 Microchip Technology Inc.
Preliminary
DS39632D-page 21