PIC18F8723 datasheet(21/60 Pages) MICROCHIP

21 / 60 page

Preliminary

DS39894A-page 19

PIC18F8723 FAMILY

TABLE 1-3:

PIC18F8628/8723 (80-PIN) PINOUT I/O DESCRIPTIONS

Pin Name

Pin Number

Type

Buffer

Type

Description

TQFP

RG5/MCLR/VPP

RG5

MCLR

VPP

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

Digital input.

Master Clear (Reset) input. This pin is an active-low

Reset to the device.

Programming voltage input.

OSC1/CLKI/RA7

OSC1

CLKI

RA7

I/O

CMOS

TTL

Oscillator crystal or external clock input.

Oscillator crystal input or external clock source input.

ST buffer when configured in RC mode, CMOS

otherwise.

External clock source input. Always associated with

pin function OSC1. (See related OSC1/CLKI,

OSC2/CLKO pins.)

General purpose I/O pin.

OSC2/CLKO/RA6

OSC2

CLKO

RA6

I/O

—

TTL

Oscillator crystal or clock output.

Oscillator crystal output. Connects to crystal or

resonator in Crystal Oscillator mode.

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

frequency of OSC1 and denotes the

instruction cycle rate.

General purpose I/O pin.

Legend: TTL = TTL compatible input

CMOS

= CMOS compatible input or output

ST = Schmitt Trigger input with CMOS levels

Analog

= Analog input

= Input

= Output

P= Power

I2C™/SMB = I2C/SMBus input buffer

Note 1: Alternate assignment for ECCP2 when Configuration bit, CCP2MX, is cleared (all operating modes except

Microcontroller mode).

2: Default assignment for ECCP2 in all operating modes (CCP2MX is set).

3: Alternate assignment for ECCP2 when CCP2MX is cleared (Microcontroller mode only).

4: Default assignment for P1B/P1C/P3B/P3C (ECCPMX is set).

5: Alternate assignment for P1B/P1C/P3B/P3C (ECCPMX is clear).

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