33FJ128MC708 datasheet(62/90 Pages) MICROCHIP

62 / 90 page

dsPIC33F

DS70155C-page 60

Preliminary

APPENDIX A:

DEVICE I/O PINOUTS

AND FUNCTIONS

FOR GENERAL

PURPOSE FAMILY

Table A-1 provides a brief description of device I/O

pinouts and functions that can be multiplexed to a port

pin. Multiple functions may exist on one port pin. When

multiplexing occurs, the peripheral module’s functional

requirements may force an override of the data

direction of the port pin.

TABLE A-1:

PINOUT I/O DESCRIPTIONS FOR GENERAL PURPOSE FAMILY

Pin Name

Type

Input Buffer

Type

Description

AN0-AN23

Analog

Analog input channels.

AVDD

Positive supply for analog module.

AVSS

Ground reference for analog module.

CLKI

CLKO

ST/CMOS

—

External clock source input. Always associated with OSC1 pin

function.

Oscillator crystal output. Connects to crystal or resonator in Crystal

Oscillator mode. Optionally functions as CLKO in RC and EC modes.

Always associated with OSC2 pin function.

CN0-CN23

Input change notification inputs. Can be software programmed for

internal weak pull-ups on all inputs.

COFS

CSCK

CSDI

CSDO

I/O

—

Data Converter Interface frame synchronization pin.

Data Converter Interface serial clock input/output pin.

Data Converter Interface serial data input pin.

Data Converter Interface serial data output pin.

C1RX

C1TX

C2RX

C2TX

—

ECAN1 bus receive pin.

ECAN1 bus transmit pin.

ECAN2 bus receive pin.

ECAN2 bus transmit pin.

PGD1/EMUD1

PGC1/EMUC1

PGD2/EMUD2

PGC2/EMUC2

PGD3/EMUD3

PGC3/EMUC3

I/O

Data I/O pin for programming/debugging communication channel 1.

Clock input pin for programming/debugging communication channel 1.

Data I/O pin for programming/debugging communication channel 2.

Clock input pin for programming/debugging communication channel 2.

Data I/O pin for programming/debugging communication channel 3.

Clock input pin for programming/debugging communication channel 3.

IC1-IC8

Capture inputs 1 through 8.

INT0

INT1

INT2

INT3

INT4

External interrupt 0.

External interrupt 1.

External interrupt 2.

External interrupt 3.

External interrupt 4.

MCLR

I/P

Master Clear (Reset) input or programming voltage input. This pin is

an active-low Reset to the device.

OCFA

OCFB

OC1-OC8

—

Compare Fault A input (for Compare Channels 1, 2, 3 and 4).

Compare Fault B input (for Compare Channels 5, 6, 7 and 8).

Compare outputs 1 through 8.

OSC1

OSC2

I/O

ST/CMOS

—

Oscillator crystal input. ST buffer when configured in RC mode;

CMOS otherwise.

Oscillator crystal output. Connects to crystal or resonator in Crystal

Oscillator mode. Optionally functions as CLKO in RC and EC modes.

RA0-RA7

RA9-RA10

RA12-RA15

I/O

PORTA is a bidirectional I/O port.

RB0-RB15

I/O

PORTB is a bidirectional I/O port.

Legend:

CMOS = CMOS compatible input or output; Analog = Analog input

ST = Schmitt Trigger input with CMOS levels; O = Output; I = Input; P = Power

33FJ128MC708 Datasheet(PDF) 62 Page - Microchip Technology

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