PIC18F2450_08 Datasheet, PDF (23/324 Pages) Microchip Technology – 28/40/44-Pin, High-Performance, 12 MIPS, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

PIC18F2450/4450
TABLE 1-3: PIC18F4450 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin Buffer
PDIP QFN TQFP ^{Type Type}
Description
PORTE is a bidirectional I/O port.
RE0/AN5
RE0
AN5
8 25 25
I/O ST
Digital I/O.
I Analog Analog input 5.
RE1/AN6
RE1
AN6
9 26 26
I/O ST
Digital I/O.
I Analog Analog input 6.
RE2/AN7
RE2
AN7
10 27 27
I/O ST
Digital I/O.
I Analog Analog input 7.
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⁽¹⁾
ICCK
ICPGC
NC/ICDT/ICPGD⁽¹⁾
ICDT
ICPGD
NC/ICRST/ICVPP⁽¹⁾
ICRST
ICVPP
NC/ICPORTS⁽¹⁾
ICPORTS
18 37 37
P
— Internal USB 3.3V voltage regulator output. Positive
supply for internal USB transceiver.
— — 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.
— — 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
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels I
= Input
O = Output
P
= Power
Note 1: 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.
© 2008 Microchip Technology Inc.
DS39760D-page 21