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DSPIC33FJ12MC02ESS датащи(PDF) 253 Page - Microchip Technology

номер детали DSPIC33FJ12MC02ESS
подробное описание детали  High-Performance, 16-Bit Digital Signal Controllers
PDF  284 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

DSPIC33FJ12MC02ESS датащи(HTML) 253 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
Preliminary
DS70265B-page 251
dsPIC33FJ12MC201/202
FIGURE 23-13:
QEI MODULE INDEX PULSE TIMING CHARACTERISTICS
QEA
(input)
Ungated
Index
QEB
(input)
TQ55
Index Internal
Position
Counter Reset
TQ50
TQ51
TABLE 23-31: 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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