MCP3909RD-3PH3 Microchip Technology, MCP3909RD-3PH3 Datasheet - Page 103

• Manufacturer Part Number: MCP3909RD-3PH3
• Description: REF DESIGN FOR MCP3909 W/18F2520
• Manufacturer: Microchip Technology

Specifications of MCP3909RD-3PH3

• Main Purpose: Power Management, Energy/Power Meter
• Utilized Ic / Part: MCP3909, PIC18F2520, PIC18F4550
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

D.1
© 2009 Microchip Technology Inc.
FIRMWARE VERSIONS
Appendix D. 50/60 Hz Meter Operation
There are two versions of firmware for the meter due to the quasi-synchronous
sampling scheme employed by the dsPIC33F firmware. The design covers the
frequency of rated frequency ±2.5 Hz.
To change the rated frequency, just change the definition in the beginning of
cacul.h - #define STD_FREQ 50.0.
This is provided for download from Microchip’s website, file names and checksums
below.
At the same time you need to change the crystal to provide clock for metering IC.
TABLE D-1:
Line Frequency
50 Hz
60 Hz
ENERGY METER REFERENCE DESIGN
FIRMWARE FILES
Firmware Name
MCP3909 / DSPIC33F 3-PHASE
PM_1_50.ZIP
PM_1_60.ZIP
Hex File Checksum
TBD
TBD
DS51723A-page 103
YXX VALUE
3.857 MHz
TBD