dspic33fj128mc706at-i-pt Microchip Technology Inc., dspic33fj128mc706at-i-pt Datasheet - Page 296
dspic33fj128mc706at-i-pt
Manufacturer Part Number
dspic33fj128mc706at-i-pt
Description
High-performance, 16-bit Digital Signal Controllers
Manufacturer
Microchip Technology Inc.
Datasheet
1.DSPIC33FJ128MC706AT-I-PT.pdf
(342 pages)
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dsPIC33FJXXXMCX06A/X08A/X10A
FIGURE 26-12:
TABLE 26-30: QEI INDEX PULSE TIMING REQUIREMENTS
DS70594A-page 294
AC CHARACTERISTICS
TQ50
TQ51
TQ55
Note 1:
Param
No.
2:
QEA
(input)
QEB
(input)
Ungated
Index
Index Internal
Position Counter
Reset
TqiL
TqiH
Tqidxr
Symbol
These parameters are characterized but not tested in manufacturing.
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.
Filter Time to Recognize Low
with Digital Filter
Filter Time to Recognize High
with Digital Filter
Index Pulse Recognized to Position
Counter Reset (ungated index)
QEI MODULE INDEX PULSE TIMING CHARACTERISTICS
TQ51
Characteristic
(1)
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
Preliminary
TQ55
3 * N * T
3 * N * T
3 T
Min
CY
CY
CY
TQ50
-40°C ≤ T
-40°C ≤ T
Max
—
—
—
A
A
≤ +125°C for Extended
≤ +85°C for Industrial
Units
ns
ns
ns
© 2009 Microchip Technology Inc.
N = 1, 2, 4, 16, 32, 64,
128 and 256 (Note 2)
N = 1, 2, 4, 16, 32, 64,
128 and 256 (Note 2)
Conditions
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