PIC24EP64MC204-E/PT Microchip Technology, PIC24EP64MC204-E/PT Datasheet - Page 421

• Manufacturer Part Number: PIC24EP64MC204-E/PT
• Description: 16 Bit MCU, 64KB Flash, 8KB RAM, 60 MHz, 44 Pin, MCPWM,QEI, 3 OpAmp, 4 Comp, PTG
• Manufacturer: Microchip Technology

FIGURE 30-12:
TABLE 30-30: QUADRATURE DECODER TIMING REQUIREMENTS
 2011-2012 Microchip Technology Inc.
AC CHARACTERISTICS
TQ30
TQ31
TQ35
TQ36
TQ40
TQ41
Note 1:
Param
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X, AND PIC24EPXXXGP/MC20X
No.
2:
3:
These parameters are characterized but not tested in manufacturing.
Data in “Typical” column is at 3.3V, +25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
N = Index Channel Digital Filter Clock Divide Select bits. Refer to Section 15. “Quadrature Encoder
Interface (QEI)” (DS70601) in the “dsPIC33E/PIC24E Family Reference Manual”. Please see the
Microchip web site for the latest family reference manual sections.
QEA
(input)
QEB
(input)
QEB
Internal
T
T
T
T
T
T
Symbol
QU
QU
QU
QU
QUF
QUF
L
H
IN
P
L
H
(dsPIC33EPXXXMC20X/50X and PIC24EPXXXMC20X DEVICES ONLY)
QEA/QEB INPUT CHARACTERISTICS
(dsPIC33EPXXXMC20X/50X and PIC24EPXXXMC20X DEVICES ONLY)
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)
TQ41
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
TQ31
TQ35
3 * N * T
3 * N * T
Typ.
12 T
6 T
6 T
3 T
TQ35
CY
CY
CY
TQ30
CY
(2)
CY
CY
TQ40
TQ30
Max.
—
—
—
—
—
—
-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 3)
N = 1, 2, 4, 16, 32, 64,
128 and 256 (Note 3)
DS70657F-page 421
Conditions
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—
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