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

• 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

Preface ........................................................................................................................... 1
Chapter 1. Product Overview
Chapter 2. Hardware
Chapter 3. PIC18F2520 Calculation and Register Description
Chapter 4. Meter Protocol and Timings
Chapter 5. Meter Calibration
© 2008 Microchip Technology Inc.
Introduction............................................................................................................ 1
Document Layout .................................................................................................. 2
Conventions Used in this Guide ............................................................................ 3
Recommended Reading........................................................................................ 4
The Microchip Web Site ........................................................................................ 4
Customer Support ................................................................................................. 4
Document Revision History ................................................................................... 5
1.1 Introduction ..................................................................................................... 7
1.2 What the MCP3909 3-Phase Energy Meter Reference Design Kit Includes .. 8
1.3 Getting Started ............................................................................................... 9
2.1 Input and Analog Front End ......................................................................... 11
2.2 Clock Generation Circuit And PLL ................................................................ 12
2.3 Meter Output ................................................................................................ 13
2.4 Power Supply Circuit .................................................................................... 14
3.1 Register Overview ........................................................................................ 15
3.2 Signal Flow Summary .................................................................................. 16
3.3 Complete Register List ................................................................................. 17
3.4 Configuration And Output Registers ............................................................. 21
3.5 Calibration Registers .................................................................................... 32
4.1 PIC18F2520 Protocol ................................................................................... 37
5.1 Calibration Overview .................................................................................... 39
5.2 Active Power Signal Flow and Calibration .................................................... 41
5.3 RMS Current, RMS Voltage, Apparent Power Signal Flow and Calibration . 42
Table of Contents
METER REFERENCE DESIGN
MCP3909 3-PHASE ENERGY
DS51643B-page iii