MCP3909RD-1PH1 Microchip Technology, MCP3909RD-1PH1 Datasheet - Page 11

• 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

1.3
© 2009 Microchip Technology Inc.
GETTING STARTED
To describe how to use the MCP3909/PIC18F85J90 Single Phase Energy Meter
Reference Design, the following example is given using a 2-Wire 1-phase, 220V AC
line voltage and connections using an energy meter calibrator equipment or other
programmable load source. The meter design uses a 5A load for calibration current
and a maximum current (I
All connections described in this section are dependent on the choice of current
sensing element and a secondary external transformer may be required in higher
current meter designs.
For testing a calibrated meter, the following connections apply for a 4-wire connection.
1.3.1
FIGURE 1-3:
1.3.2
The meter will turn on when the line connection has 220V connected. The LCD display
will show total energy accumulated.
Line
Neutral
MAIN
Step 1: Wiring connections
Step 2: Turn On Line/Load Power to the Meter (Power the Meter)
1
Example Connections using a 4-Wire System.
MAX
) of 10A.
2
3
Product Overview
4
DS51884A-page 11
Neutral
LOAD
Line