DACREF datasheet(22/30 Pages) ATMEL

Teilenummer	DACREF

Bauteilbeschribung	32-Bit AVR UC3 C Series Schematic Checklist

PDF	30 Pages

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Hersteller	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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AVR32768

32157A-AVR-12/10

12 Quadrature decoder

Depending on the quadrature encoder used, pull-up resistors may or may not be

needed. Figure 12-1 shows an example of how the quadrature decoder (QDEC) can

be connected to a quadrature encoder using pull-up on the signal wires.

Figure 12-1.

Quadrature decoder example schematic.

GND

VCC

QEPI

QEPB

QEPA

VDD

10 kΩ

Optional resistors

Table 12-1.

Quadrature decoder connection checklist.

Signal name

Recommended pin connection

Description

QEPA

Quadrature encoder output A,

10kΩ

(1) pull-up

Quadrature phase signal A digital input

QEPB

Quadrature encoder output B,

10kΩ

(1) pull-up

Quadrature phase signal B digital input

QEPI

Quadrature encoder index output,

10kΩ

(1) pull-up

Quadrature index signal digital input

Note:

1. These values are given only as a typical example

DACREF Datenblatt(PDF) 22 Page - ATMEL Corporation