MCP3909RD-3PH3 Microchip Technology, MCP3909RD-3PH3 Datasheet - Page 11

• 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

1.1
© 2008 Microchip Technology Inc.
INTRODUCTION
The MCP3909 3-Phase Energy Meter Reference Design is a fully functional 3-phase
meter. Please note that the meters are not shipped calibrated and should be calibrated
using standard meter calibration equipment and the software included with the kit.
There are two boards that comprise the complete meter: the main board and the USB
communications module. The communications module shipped with this kit is the
PIC18F4550 USB Interface module. The USB Interface module also includes an LCD
display. The main board contains the analog circuitry and the PIC18F2520 device that
functions as the main RMS engine. The communications module displays the output of
the PIC18F2520 and also connects the meter to the PC for calibration using the
PIC18F4550 3-Phase Meter Calibration Software. The meter design contains serially
accessible registers and is intended to be flexible and upgraded to a variety of PIC
micro-based energy meter designs using the firmware presented herein. The “3-Phase
Energy Meter USB software” offers a functional and simple means to monitor and
control the PIC18F2520 via USB through the PIC18F4550. In addition, the RS-232
interface of the PIC18F2520 can be used to create custom calibration setups. The
energy meter software offers an automated step by step calibration process that can
be used to quickly calibrate energy meters.
FIGURE 1-1:
Chapter 1. Product Overview
MCP3909 3-Phase Energy Meter Reference Design.
METER REFERENCE DESIGN
MCP3909 3-PHASE ENERGY
DS51643B-page 7
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