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PIC24EP256GU810-I Datasheet, PDF (321/622 Pages) Electronic Film Capacitors, Inc. – 16-Bit Microcontrollers and Digital Signal Controllers with High-Speed PWM, USB and Advanced Analog | |||
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dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
17.0 QUADRATURE ENCODER
INTERFACE (QEI) MODULE
(dsPIC33EPXXX(MC/MU)8XX
DEVICES ONLY)
Note 1: This data sheet summarizes the features
of the dsPIC33EPXXX(GP/MC/MU)806/
810/814 and PIC24EPXXX(GP/GU)810/
814 families of devices. It is not intended
to be a comprehensive reference source.
To complement the information in this
data sheet, refer to Section 15.
âQuadrature Encoder Interface (QEI)â
(DS70601) of the âdsPIC33E/PIC24E
Family Reference Manualâ, which is
available from the Microchip web site
(www.microchip.com).
2: Some registers and associated bits
described in this section may not be
available on all devices. Refer to
Section 4.0 âMemory Organizationâ in
this data sheet for device-specific register
and bit information.
This chapter describes the Quadrature Encoder Inter-
face (QEI) module and associated operational modes.
The QEI module provides the interface to incremental
encoders for obtaining mechanical position data.
The operational features of the QEI module include:
⢠32-Bit Position Counter
⢠32-Bit Index Pulse Counter
⢠32-Bit Interval Timer
⢠16-Bit Velocity Counter
⢠32-Bit Position Initialization/Capture/Compare
High Register
⢠32-Bit Position Compare Low Register
⢠x4 Quadrature Count mode
⢠External Up/Down Count mode
⢠External Gated Count mode
⢠External Gated Timer mode
⢠Internal Timer mode
Figure 17-1 illustrates the QEI block diagram.
Note:
An âxâ used in the names of pins, control/
status bits and registers denotes a
particular Quadrature Encoder Interface
(QEI) module number (x = 1 or 2).
ï£ 2009-2012 Microchip Technology Inc.
DS70616G-page 321
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