DSPIC33FJ32MC304-I/SP 查看數據表（PDF） - Microchip Technology

零件编号

产品描述 (功能)

生产厂家

DSPIC33FJ32MC304-I/SP

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 31-13:

QEA

(input)

QEI MODULE INDEX PULSE TIMING CHARACTERISTICS

QEB

(input)

Ungated

Index

Index Internal

TQ51

Position Counter

Reset

TQ50

TQ55

TABLE 31-31: QEI INDEX PULSE 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)

Min

Max Units

Conditions

TQ50 TqIL

Filter Time to Recognize Low,

with Digital Filter

3 * N * TCY —

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

128 and 256 (Note 2)

TQ51 TqiH

Filter Time to Recognize High,

with Digital Filter

3 * N * TCY —

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

128 and 256 (Note 2)

TQ55 Tqidxr Index Pulse Recognized to Position

3 TCY

—

ns

—

Counter Reset (ungated index)

Note 1: These parameters are characterized but not tested in manufacturing.

2: Alignment of index pulses to QEA and QEB is shown for position counter Reset timing only. Shown for

forward direction only (QEA leads QEB). Same timing applies for reverse direction (QEA lags QEB) but

index pulse recognition occurs on falling edge.

DS70291G-page 382

© 2007-2012 Microchip Technology Inc.

Share Link: