DSPIC33FJ12MC201-I/SO Microchip Technology, DSPIC33FJ12MC201-I/SO Datasheet - Page 167

• Manufacturer Part Number: DSPIC33FJ12MC201-I/SO
• Description: IC DSPIC MCU/DSP 12K 20SOIC
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ12MC201-I/SO

• Program Memory Type: FLASH
• Program Memory Size: 12KB (12K x 8)
• Package / Case: 20-SOIC (7.5mm Width)
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, Motor Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 15
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Product: DSCs
• Data Bus Width: 16 bit
• Processor Series: DSPIC33F
• Core: dsPIC
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 15
• Data Ram Size: 1 KB
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52713-733, 52714-737, 53276-922, EWDSPIC
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, DM240001, DV164033
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DV164033 - KIT START EXPLORER 16 MPLAB ICD2DM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

16.0
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 16-1:
© 2009 Microchip Technology Inc.
Note:
UPDNx
INDXx
QEAx
QEBx
QUADRATURE ENCODER
INTERFACE (QEI) MODULE
This data sheet summarizes the features
of the dsPIC33FJ12MC201/202 family of
devices. It is not intended to be a
comprehensive
complement the information in this data
sheet, refer to the “dsPIC33F Family Ref-
erence Manual”, Section 15. “Quadrature
Encoder Interface (QEI)” (DS70208),
which is available from the Microchip web
site (www.microchip.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
reference
QEIM<2:0>
T
CY
Interface Logic
source.
Quadrature
TQCS
Encoder
1
0
Mode Select
QEIM<2:0>
Preliminary
To
3
TQGATE
dsPIC33FJ12MC201/202
1
0
2
The operational features of the QEI include:
• 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
These operating modes are determined by setting the
appropriate bits, QEIM<2:0> in (QEIxCON<10:8>).
Figure 16-1 depicts the Quadrature Encoder Interface
block diagram.
index pulse
16-bit Up/Down Counter
Max Count Register
D
CK
Comparator/
Zero Detect
(POSCNT)
(MAXCNT)
TQCKPS<1:0>
Q
Q
1, 8, 64, 256
Prescaler
2
Reset
Equal
DS70265D-page 165
QEIIF
Event
Flag