DSPIC30F3011 Microchip Technology Inc., DSPIC30F3011 Datasheet - Page 185

• Manufacturer Part Number: DSPIC30F3011
• Description: Dspic30f3010/3011 Enhanced Flash 16-bit Digital Signal Controller
• Manufacturer: Microchip Technology Inc.

FIGURE 23-14:
TABLE 23-30: QUADRATURE DECODER TIMING REQUIREMENTS
© 2007 Microchip Technology Inc.
AC CHARACTERISTICS
TQ30
TQ31
TQ35
TQ36
TQ40
TQ41
Note 1:
Param
No.
2:
QEA
(input)
QEB
(input)
QEB
Internal
These parameters are characterized but not tested in manufacturing.
N = Index Channel Digital Filter Clock Divide Select bits. Refer to Section 16. “Quadrature Encoder
Interface (QEI)” in the “dsPIC30F Family Reference Manual” (DS70046).
T
T
T
T
T
T
Symbol
QU
QU
QU
QU
QUF
QUF
L
H
IN
P
L
H
QEA/QEB INPUT CHARACTERISTICS
Quadrature Input Low Time
Quadrature Input High Time
Quadrature Input Period
Quadrature Phase Period
Filter Time to Recognize Low,
with Digital Filter
Filter Time to Recognize High,
with Digital Filter
Characteristic
TQ36
TQ31
(1)
Confidential
TQ41
Standard Operating Conditions: 2.5V to 5.5V
(unless otherwise stated)
Operating temperature
TQ31
TQ35
3 * N * T
3 * N * T
12 T
Typ
6 T
6 T
3 T
CY
CY
CY
TQ35
(2)
CY
dsPIC30F3010/3011
TQ30
CY
CY
TQ40
Max
TQ30
—
—
—
—
—
—
-40°C ≤ T
-40°C ≤ T
Units
ns
ns
ns
ns
ns
ns
A
A
≤ +85°C for Industrial
≤ +125°C for Extended
N = 1, 2, 4, 16, 32, 64,
128 and 256 (Note 2)
N = 1, 2, 4, 16, 32, 64,
128 and 256 (Note 2)
DS70141D-page 183
Conditions
—
—
—
—