MCP3909RD-1PH1 Microchip Technology, MCP3909RD-1PH1 Datasheet - Page 44

• Manufacturer Part Number: MCP3909RD-1PH1
• Description: BOARD DES MCP3909 ENERGY METER
• Manufacturer: Microchip Technology

Specifications of MCP3909RD-1PH1

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP3909, PIC18F85J90
• Primary Attributes: Single Phase Shunt Energy Meter
• Secondary Attributes: 16 Bit ADC
• Ic Function: Single Phase Energy Measurement IC
• Supply Voltage Range: 4.5V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: SSOP
• No. Of Pins: 24
• Interface Type: SPI
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

MCP3909/PIC18F85J90 Single Phase Energy Meter Reference Design
5.3.8
FIGURE 5-6:
DS51884A-page 44
Configuration C4 Flow Chart - Mid-Range
Flow Chart for RMS Calibration.
(V
Put meter in Calibration
PhA_I_RMS_RAW2 and
IR2 and VR2 in equation
Set MODE1 register bits
and LINE_CYC register
registers (referred to as
PHA_V_RMS_GLSB,
PhA_V_RMS_RAW2
PHA_I_RMS_GLSB,
B
Configuration C1
Fetch values from
PHA_V_RMS_OFF,
PHA_I_RMS_OFF,
Configuration C4
calibration register
Calculate & Write
Read contents of
and 1/10 I
contents based
Section 5.3.9
Calibration
End of This
CAL_MODE
equations in
bit 1 low?
Phase
set)
Is
YES
B
at PF=1)
NO
© 2009 Microchip Technology Inc.