33FJ128MC708 datasheet(76/90 Pages) MICROCHIP

76 / 90 page

dsPIC33F

DS70155C-page 74

Preliminary

APPENDIX B:

DEVICE I/O PINOUTS

AND FUNCTIONS

FOR MOTOR

CONTROL FAMILY

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

pinouts and the functions that may 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 B-1:

PINOUT I/O DESCRIPTIONS FOR MOTOR CONTROL FAMILY

Pin Name

Type

Buffer

Type

Description

AN0-AN23

Analog

Analog input channels.

AN0 and AN1 are also used for device programming data and clock inputs, respectively.

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

—

CAN1 bus receive pin.

CAN1 bus transmit pin.

CAN2 bus receive pin.

CAN2 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.

INDX

QEA

QEB

UPDN

CMOS

Quadrature Encoder Index Pulse input.

Quadrature Encoder Phase A input in QEI mode.

Auxiliary Timer External Clock/Gate input in Timer mode.

Quadrature Encoder Phase A input in QEI mode.

Auxiliary Timer External Clock/Gate input in Timer mode.

Position Up/Down Counter Direction State.

INT0

INT1

INT2

INT3

INT4

External interrupt 0.

External interrupt 1.

External interrupt 2.

External interrupt 3.

External interrupt 4.

FLTA

FLTB

PWM1L

PWM1H

PWM2L

PWM2H

PWM3L

PWM3H

PWM4L

PWM4H

—

PWM Fault A input.

PWM Fault B input.

PWM 1 low output.

PWM 1 high output.

PWM 2 low output.

PWM 2 high output.

PWM 3 low output.

PWM 3 high output.

PWM 4 low output.

PWM 4 high output.

Legend:

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

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

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