DSPIC33FJ128GP706A-I/PT Microchip Technology, DSPIC33FJ128GP706A-I/PT Datasheet - Page 29

• Manufacturer Part Number: DSPIC33FJ128GP706A-I/PT
• Description: IC DSPIC MCU/DSP 128K 64-TQFP
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ128GP706A-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 128KB (128K x 8)
• Package / Case: 64-TFQFP
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: CAN, I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: AC'97, Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 53
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 18x10b/12b
• 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: 53
• Data Ram Size: 16 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
• Core Frequency: 40MHz
• Core Supply Voltage: 3.3V
• Embedded Interface Type: I2C, SPI, UART
• No. Of I/o's: 53
• Flash Memory Size: 128KB
• Supply Voltage Range: 3V To 3.6V
• Rohs Compliant: Yes
• Package: 64TQFP
• Device Core: dsPIC
• Family Name: dsPIC33
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 3.3 V
• Interface Type: CAN/I2C/SPI/UART
• On-chip Adc: 36-chx10-bit|36-chx12-bit
• Number Of Timers: 9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 876-1001 - DSPIC33 BREAKOUT BOARD
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3.3
© 2009 Microchip Technology Inc.
CALCULATION() - CALCULATING ELECTRICAL PARAMETERS
All power parameters are calculated with the function Calculation(), which is executed
once every 3 cycles of the power grid. As shown in Figure 3-2, all calculations are
performed post DFT (direct fourier transform), in the frequency domain.
• RMS Voltage/current Of Each phase
• Phase Angle
• Measuring Line Frequency
• Active, Reactive, Apparent Power Of Each Phase
• Positive and Negative Active Power
• Positive/negative Reactive Power
• 4-quadrant Reactive Energy
• Total Active Power, Total Reactive Power, and Total Apparent Power
• Total Power Factor
• Voltage and Current Distortion Of Each Phase
• Voltage and Current Harmonic Contents Of Each Phase
FIGURE 3-2:
Note:
Algorithms for all calculations are shown in Appendix C. “Power
Calculation Theory”.
Calculation() Flow Chart.
phase sequence 1~3
sync. window process
sync. window process
Select sync. window
DTF transformation
DTF transformation
Voltage signal and
Current signal and
Calculate function
Calculate voltage
Calculate voltage
sine/cosine table
function and
RMS value
harmonic
loop
phase sequence 1~3
Calculate frequency,
Calculate combined
and compensation
Combined energy
Update loop array
power calculation
Calculate current
Calculate current
determine phase
pointer and data
End of function
Active/reactive
accumulation
RMS value
calculation
sequence
harmonic
power
length
end
Firmware
DS51723A-page 29