PIC18F2682T-IP 查看數據表（PDF） - Microchip Technology

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PIC18F2682T-IP

28/40/44-Pin Enhanced Flash Microcontrollers with ECAN™ Technology, 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F2682/2685/4682/4685

TABLE 1-3: PIC18F4682/4685 PINOUT I/O DESCRIPTIONS

Pin Name

Pin Number

Pin Buffer

PDIP QFN TQFP Type Type

Description

MCLR/VPP/RE3

MCLR

VPP

RE3

1 18 18

Master Clear (input) or programming voltage (input).

I

ST

Master Clear (Reset) input. This pin is an

active-low Reset to the device.

P

Programming voltage input.

I

ST

Digital input.

OSC1/CLKI/RA7

OSC1

CLKI

RA7

13 32 30

Oscillator crystal or external clock input.

I

ST

Oscillator crystal input or external clock source input.

ST buffer when configured in RC mode;

CMOS otherwise.

I CMOS External clock source input. Always associated with

pin function OSC1. (See related OSC2/CLKO pin.)

I/O TTL General purpose I/O pin.

OSC2/CLKO/RA6

OSC2

CLKO

RA6

14 33 31

Oscillator crystal or clock output.

O

—

Oscillator crystal output. Connects to crystal or

resonator in Crystal Oscillator mode.

O

—

In RC mode, OSC2 pin outputs CLKO which has 1/4

the frequency of OSC1 and denotes the instruction

cycle rate.

I/O TTL General purpose I/O pin.

Legend: TTL = TTL compatible input

ST = Schmitt Trigger input with CMOS levels

O = Output

CMOS = CMOS compatible input or output

I

= Input

P

= Power

DS39761B-page 16

Preliminary

© 2007 Microchip Technology Inc.

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