MCP3909RD-3PH1 Microchip Technology, MCP3909RD-3PH1 Datasheet - Page 54

• Manufacturer Part Number: MCP3909RD-3PH1
• Description: REF DESIGN MCP3909 3PH ENGY MTR
• Manufacturer: Microchip Technology

Specifications of MCP3909RD-3PH1

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: No
• Utilized Ic / Part: MCP3909, PIC18F2520, PIC18F4550
• Primary Attributes: 3-Ph, 220 VAC, In Case, LCD, USB, GUI
• Secondary Attributes: Opto-Isolated Interface for Safety
• Operating Voltage: 220 V
• Operating Current: 5 A
• Description/function: Energy Meter
• For Use With/related Products: MCP3909
• Lead Free Status / RoHS Status: Not applicable / Not applicable

MCP3909 3-Phase Energy Meter Reference Design
5.3.8
FIGURE 5-6:
DS51643B-page 50
Flow Chart for Active Power Offset
Active Power Offset Flow Chart.
(suggest 256 Line Cycles)
CAL_CONTROL register
Put meter in Calibration
Enable Calibration Mode
Set MODE1 register bits
ENERGY_W_L_RAW
PHy_W_OFF register
by setting bit 0 and 1 of
Configuration C3 (V
and 1/100 I
contents based on
Calculate & Write
LINE_CYC register
Read contents of
Section 5.3.9
equations in
CAL_MODE
End of This
Register
bit 1 low
Phase
to 1
Is
?
B
YES
at PF=1)
B
NO
© 2008 Microchip Technology Inc.