DSPIC33FJ128MC706T-I/PT Microchip Technology, DSPIC33FJ128MC706T-I/PT Datasheet - Page 193

• Manufacturer Part Number: DSPIC33FJ128MC706T-I/PT
• Description: IC,DSP,16-BIT,CMOS,TQFP,64PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ128MC706T-I/PT

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: CAN, I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, Motor Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA330013 - MODULE PLUG-IN DSPIC33 100TQFPDV164033 - KIT START EXPLORER 16 MPLAB ICD2DM240001 - BOARD DEMO PIC24/DSPIC33/PIC32AC164327 - MODULE SKT FOR 64TQFP
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

17.0
This section 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.
FIGURE 17-1:
© 2009 Microchip Technology Inc.
Note:
UPDNx
INDXx
QEAx
QEBx
QUADRATURE ENCODER
INTERFACE (QEI) MODULE
This data sheet summarizes the features
of the dsPIC33FJXXXMCX06/X08/X10
family of devices. However, it is not
intended to be a comprehensive reference
source. To complement the information in
this data sheet, refer to Section 15.
“Quadrature Encoder Interface (QEI)”
(DS70208) in the “dsPIC33F Family Ref-
erence Manual”, which is available from
the Microchip web site (www.micro-
chip.com).
Synchronize
Sleep Input
Det
PCDOUT
UPDN_SRC
QUADRATURE ENCODER INTERFACE BLOCK DIAGRAM
Programmable
Programmable
0
1
Programmable
1
0
Digital Filter
Digital Filter
Digital Filter
QEIxCON<11>
Existing Pin Logic
Up/Down
3
QEIM<2:0>
T
dsPIC33FJXXXMCX06/X08/X10
CY
Interface Logic
Quadrature
TQCS
Encoder
1
0
Mode Select
QEIM<2:0>
3
TQGATE
1
0
2
The operational features of the QEI include the follow-
ing:
• Three input channels for two phase signals and
• 16-bit up/down position counter
• Count direction status
• Position Measurement (x2 and x4) mode
• Programmable digital noise filters on inputs
• Alternate 16-bit Timer/Counter mode
• Quadrature Encoder Interface interrupts
The QEI module’s operating mode is determined by
setting
(QEICON<10:8>). Figure 17-1 depicts the Quadrature
Encoder Interface block diagram.
an index pulse
16-bit Up/Down Counter
Max Count Register
D
CK
Comparator/
Zero Detect
(POSCNT)
(MAXCNT)
the
TQCKPS<1:0>
Q
Q
1, 8, 64, 256
Prescaler
2
appropriate
Reset
Equal
bits,
DS70287C-page 191
QEIM<2:0>
QExIF
Event
Flag