PIC24EP256GU810-I Datasheet, PDF (524/622 Pages) Electronic Film Capacitors, Inc. – 16-Bit Microcontrollers and Digital Signal Controllers with High-Speed PWM, USB and Advanced Analog

dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
FIGURE 32-13:
QEA/QEB INPUT CHARACTERISTICS
(dsPIC33EPXXX(MC/MU)806/810/814 DEVICES ONLY)
TQ36
QEA
(input)
TQ31
TQ30
TQ35
QEB
(input)
TQ41
TQ40
QEB
Internal
TQ31
TQ30
TQ35
TABLE 32-31: QUADRATURE DECODER TIMING REQUIREMENTS
(dsPIC33EPXXX(MC/MU)806/810/814 DEVICES ONLY)
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +125°C for Extended
Param. Symbol
Characteristic⁽¹⁾
Typ.⁽²⁾
Max. Units
Conditions
TQ30
TQ31
TQ35
TQ36
TQ40
TQ41
Note 1:
2:
3:
TQUL Quadrature Input Low Time
6 TCY
—
ns
TQUH Quadrature Input High Time
6 TCY
—
ns
TQUIN Quadrature Input Period
12 TCY
—
ns
TQUP Quadrature Phase Period
3 TCY
—
ns
TQUFL Filter Time to Recognize Low
3 * N * TCY
—
with Digital Filter
ns N = 1, 2, 4, 16, 32, 64,
128 and 256 (Note 3)
TQUFH Filter Time to Recognize High
3 * N * TCY
—
with Digital Filter
ns N = 1, 2, 4, 16, 32, 64,
128 and 256 (Note 3)
These parameters are characterized but not tested in manufacturing.
Data in “Typ” 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.
DS70616G-page 524
 2009-2012 Microchip Technology Inc.