User guide

71M6533-DB Demo Board User’s Manual
Page: 4 of 75 ` REV 3
2.5 Testing the Demo Board ...................................................................................................................................... 49
2.5.1 Functional Meter Test ...................................................................................................................................... 49
2.5.2 EEPROM ......................................................................................................................................................... 51
2.5.3 RTC ................................................................................................................................................................. 51
2.5.4 Hardware Watchdog Timer ............................................................................................................................. 52
2.5.5 LCD ................................................................................................................................................................. 52
2.6 Application Notes ................................................................................................................................................. 53
3 HARDWARE DESCRIPTION ................................................................................................................................. 55
3.1 71M6533 Board Description: Jumpers, Switches and Test Points .................................................................. 55
3.2 Board Hardware Specifications .......................................................................................................................... 58
4 APPENDIX ............................................................................................................................................................. 59
4.1 71M6533-DB Demo Board Electrical Schematic ................................................................................................ 60
4.2 71M6533-DB Demo Board Bill of Material .......................................................................................................... 63
4.3 71M6533-DB Demo Board PCB Layout............................................................................................................... 64
4.4 71M6533 Pin-Out Information .............................................................................................................................. 70
5 REVISION HISTORY ............................................................................................................................................. 75
List of Figures
Figure 1-1: Block Diagram for the 71M6533-DB Demo Board with Debug Board ............................................................... 9
Figure 1-2: DB6534T14A3 Demo Board with USB-to-Serial Adapter................................................................................ 10
Figure 1-3: Hyperterminal Sample Window with Disconnect Button (Arrow) ..................................................................... 12
Figure 1-4: Port Speed and Handshake Setup (left) and Port Bit setup (right) .................................................................. 12
Figure 1-5: Command Line Help Display .......................................................................................................................... 13
Figure 1-6: Typical Calibration Macro File ......................................................................................................................... 24
Figure 1-7: Emulator Window Showing Reset and Erase Buttons (see Arrows) ............................................................... 26
Figure 1-8: Emulator Window Showing Erased Flash Memory and File Load Menu......................................................... 26
Figure 2-1: Watt Meter with Gain and Phase Errors. ......................................................................................................... 35
Figure 2-2: Phase Angle Definitions .................................................................................................................................. 39
Figure 2-3: Calibration Spreadsheet for Three Measurements ......................................................................................... 42
Figure 2-4: Calibration Spreadsheet for Five Measurements ............................................................................................ 43
Figure 2-5: Calibration Spreadsheet for Rogowski coil ..................................................................................................... 44
Figure 2-6: Non-Linearity Caused by Quantification Noise ............................................................................................... 45
Figure 2-7: Voltage Divider for V1 ..................................................................................................................................... 46
Figure 2-8: External Components for RESETZ ................................................................................................................. 47
Figure 2-9: Oscillator Circuit .............................................................................................................................................. 47
Figure 2-10: EEPROM Circuit ........................................................................................................................................... 48
Figure 2-11: LCD Connections .......................................................................................................................................... 48
Figure 2-12: Optical Interface Block Diagram ................................................................................................................... 49
Figure 2-13: Meter with Calibration System ...................................................................................................................... 50
Figure 2-14: Calibration System Screen ........................................................................................................................... 50
Figure 2-15: Wh Load Line in Differential Mode at Room Temperature ............................................................................ 51
Figure 3-1: 71M6533-DB Demo Board - Board Description .............................................................................................. 57
Figure 4-1: 71M6533-DB Demo Board: Electrical Schematic 1/3...................................................................................... 60
Figure 4-2: 71M6533-DB Demo Board: Electrical Schematic 2/3...................................................................................... 61
Figure 4-3: 71M6533-DB Demo Board: Electrical Schematic 3/3...................................................................................... 62
Figure 4-4: 71M6533-DB Demo Board: Top View ............................................................................................................. 64
Figure 4-5: 71M6533-DB Demo Board: Top Copper ......................................................................................................... 65
Figure 4-6: 71M6533-DB Demo Board: Middle Layer 1 (Ground Plane) ........................................................................... 66
Figure 4-7: 71M6533-DB Demo Board: Middle Layer 2 (Supply Plane) ............................................................................ 67
Figure 4-8: 71M6533-DB Demo Board: Bottom Copper .................................................................................................... 68
Figure 4-9: 71M6533-DB Demo Board: Bottom View ........................................................................................................ 69
Figure 4-10: 71M6533/71M6533H epLQFP100: Pin Out (top view) .................................................................................. 73