MCP3909RD-3PH3 Microchip Technology, MCP3909RD-3PH3 Datasheet - Page 56

• 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

MCP3909 3-Phase Energy Meter Reference Design
5.3.10
FIGURE 5-7:
DS51643B-page 52
Flow Chart for RMS Calibration
Flow Chart for RMS Calibration.
Put meter in Calibration
IR2 and VR2 in equation
Set MODE1 register bits
Phy_I_RMS_RAW2 and
and LINE_CYC register
registers (referred to as
Configuration C4 (V
PHy_V_RMS_GLSB,
and 1/10 I
Phy_V_RMS_RAW2
Configuration C1
PHy_I_RMS_GLSB,
Fetch values from
PHy_V_RMS_OFF,
PHy_I_RMS_OFF,
calibration register
Calculate & Write
Read contents of
contents based
Section 5.3.11
Calibration
End of This
CAL_MODE
equations in
bit 1 low?
Phase
set)
Is
B
YES
at PF=1)
B
NO
© 2008 Microchip Technology Inc.