DSPIC33FJ32MC302-I 查看數據表（PDF） - Microchip Technology

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DSPIC33FJ32MC302-I

16-bit Digital Signal Controllers (up to 128 KB Flash and 16K SRAM) with Motor Control PWM and Advanced Analog

Microchip Technology 

dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04

FIGURE 31-12:

QEA/QEB INPUT CHARACTERISTICS

TQ36

QEA

(input)

TQ31

TQ30

TQ35

QEB

(input)

TQ41

TQ40

QEB

Internal

TQ31

TQ35

TQ30

TABLE 31-30: QUADRATURE DECODER TIMING REQUIREMENTS

AC CHARACTERISTICS

Standard Operating Conditions: 3.0V to 3.6V

(unless otherwise stated)

Operating temperature -40°C ≤ TA ≤ +85°C for Industrial

-40°C ≤ TA ≤ +125°C for Extended

Param

No.

Symbol

Characteristic(1)

Typ(2)

Max Units

Conditions

TQ30

TQ31

TQ35

TQ36

TQ40

TQ41

Note 1:

2:

3:

TQUL Quadrature Input Low Time

6 TCY

—

ns

—

TQUH Quadrature Input High Time

6 TCY

—

ns

—

TQUIN Quadrature Input Period

12 TCY

—

ns

—

TQUP Quadrature Phase Period

3 TCY

—

ns

—

TQUFL Filter Time to Recognize Low,

with Digital Filter

3 * N * TCY

—

ns N = 1, 2, 4, 16, 32, 64,

128 and 256 (Note 3)

TQUFH Filter Time to Recognize High,

with Digital Filter

3 * N * TCY

—

ns N = 1, 2, 4, 16, 32, 64,

128 and 256 (Note 3)

These parameters are characterized but not tested in manufacturing.

Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only

and are not tested.

N = Index Channel Digital Filter Clock Divide Select bits. Refer to Section 15. “Quadrature Encoder

Interface (QEI)” in the “dsPIC33F/PIC24H Family Reference Manual”. Please see the Microchip web site

for the latest dsPIC33F/PIC24H Family Reference Manual sections.

© 2007-2012 Microchip Technology Inc.

DS70291G-page 381

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