Microchip Technology MA300015 Data Sheet
dsPIC30F6010A/6015
DS70150E-page 200
© 2011 Microchip Technology Inc.
FIGURE 24-14:
QEA/QEB INPUT CHARACTERISTICS
TQ30
TQ35
TQ31
QEA
(input)
(input)
TQ30
TQ35
TQ31
QEB
(input)
(input)
TQ36
QEB
Internal
Internal
TQ40
TQ41
TABLE 24-31: QUADRATURE DECODER TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.5V to 5.5V
(unless otherwise stated)
Operating temperature
(unless otherwise stated)
Operating temperature
-40°C
≤ T
A
≤ +85°C for Industrial
-40°C
≤ T
A
≤ +125°C for Extended
Param
No.
Symbol
Characteristic
(1)
Typ
(2)
Max
Units
Conditions
TQ30
T
QU
L
Quadrature Input Low Time
6 T
CY
—
ns
—
TQ31
T
QU
H
Quadrature Input High Time
6 T
CY
—
ns
—
TQ35
T
QU
IN
Quadrature Input Period
12 T
CY
—
ns
—
TQ36
T
QU
P
Quadrature Phase Period
3 T
CY
—
ns
—
TQ40
T
QUF
L
Filter Time to Recognize Low,
with Digital Filter
with Digital Filter
3 * N * T
CY
—
ns
N = 1, 2, 4, 16, 32, 64,
128 and 256 (Note 2)
128 and 256 (Note 2)
TQ41
T
QUF
H
Filter Time to Recognize High,
with Digital Filter
with Digital Filter
3 * N * T
CY
—
ns
N = 1, 2, 4, 16, 32, 64,
128 and 256 (Note 2)
128 and 256 (Note 2)
Note 1:
These parameters are characterized but not tested in manufacturing.
2:
N = Index Channel Digital Filter Clock Divide Select Bits. Refer to Section 16. “Quadrature Encoder
Interface (QEI)” (DS70046) in the “dsPIC30F Family Reference Manual” .
Interface (QEI)” (DS70046) in the “dsPIC30F Family Reference Manual” .