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DSPIC33FJMC202ESS Datasheet(PDF) 257 Page - Microchip Technology

Part # DSPIC33FJMC202ESS
Description  16-bit Digital Signal Controllers (up to 32 KB Flash and 2 KB SRAM) with Motor Control and Advanced Analog
PDF  330 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

DSPIC33FJMC202ESS Datasheet(HTML) 257 Page - Microchip Technology

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© 2007-2012 Microchip Technology Inc.
DS70283K-page 257
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
FIGURE 24-13:
QEI MODULE INDEX PULSE TIMING CHARACTERISTICS
QEA
(input)
Ungated
Index
QEB
(input)
TQ55
Index Internal
Position Coun-
ter Reset
TQ50
TQ51
TABLE 24-31: 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
Counter Reset (ungated index)
3 TCY
—ns
—
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.



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