DSPIC33FJ128GP706-E/PT Microchip Technology, DSPIC33FJ128GP706-E/PT Datasheet - Page 90

• Manufacturer Part Number: DSPIC33FJ128GP706-E/PT
• Description: IC DSPIC MCU/DSP 128K 64TQFP
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ128GP706-E/PT

• 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
• 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 18x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-TFQFP
• For Use With: DM300024 - KIT DEMO DSPICDEM 1.1DV164033 - KIT START EXPLORER 16 MPLAB ICD2MA330012 - MODULE DSPIC33 100P TO 84QFPMA330011 - MODULE DSPIC33 100P TO 100QFPDM300019 - BOARD DEMO DSPICDEM 80L STARTERDM240001 - BOARD DEMO PIC24/DSPIC33/PIC32AC164327 - MODULE SKT FOR 64TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

MCP3909 / dsPIC33F 3-Phase Energy Meter Reference Design
DS51723A-page 90
minimal (<0.01%). When the input frequency deviates from the multiple of cycle
frequencies, the calculation error increases rapidly. As the calculation error is related
to the frequency offset to the multiple of freqency point, the calculation error caused by
frequency offset can be corrected. Figure C-6 is the error analysis after frequency off-
set correction using simple parabolic interpolation. Calcultion errors for all parameters
are shown to be less than 0.015% after the correction.
FIGURE C-5:
Iterations.
FIGURE C-6:
Compensation.
Error Analysis Of Improved Quasi-sync Calculation Using 3
Calculation Error Analysis After The Frequency Offset
© 2009 Microchip Technology Inc.