DSPIC30F3011 Microchip Technology Inc., DSPIC30F3011 Datasheet - Page 186
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DSPIC30F3011
Manufacturer Part Number
DSPIC30F3011
Description
Dspic30f3010/3011 Enhanced Flash 16-bit Digital Signal Controller
Manufacturer
Microchip Technology Inc.
Datasheet
1.DSPIC30F3011.pdf
(220 pages)
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dsPIC30F3010/3011
FIGURE 23-15:
TABLE 23-31: QEI INDEX PULSE TIMING REQUIREMENTS
DS70141D-page 184
AC CHARACTERISTICS
TQ50
TQ51
TQ55
Note 1:
Param
No.
2:
Position
Ungated
Index
Index Internal
QEB
(input)
QEA
(input)
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: 2.5V to 5.5V
(unless otherwise stated)
Operating temperature
Confidential
TQ55
3 * N * T
3 * N * T
3 T
Min
CY
CY
CY
TQ50
-40°C ≤ T
-40°C ≤ T
Max
—
—
—
A
A
≤ +85°C for Industrial
≤ +125°C for Extended
Units
ns
ns
ns
© 2007 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
—