71m6543h-igtr/f Maxim Integrated Products, Inc., 71m6543h-igtr/f Datasheet - Page 5

• Manufacturer Part Number: 71m6543h-igtr/f
• Description: Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

71M6543F/H Data Sheet
Figures
Figure 1: IC Functional Block Diagram ..................................................................................................... 9
Figure 2: AFE Block Diagram (Shunts: One-Local, Three-Remotes) ...................................................... 12
Figure 3. AFE Block Diagram (Four CTs) ............................................................................................... 13
Figure 4: States in a Multiplexer Frame (MUX_DIV[3:0] = 6) .................................................................. 17
Figure 5: States in a Multiplexer Frame (MUX_DIV[3:0] = 7) .................................................................. 17
Figure 6: General Topology of a Chopped Amplifier ............................................................................... 21
Figure 7: CROSS Signal with CHOP_E = 00 ........................................................................................... 21
Figure 8: RTM Timing ............................................................................................................................ 26
Figure 9. Pulse Generator FIFO Timing ................................................................................................. 28
Figure 10: Samples from Multiplexer Cycle (Frame) ............................................................................... 29
Figure 11: Accumulation Interval ............................................................................................................ 29
Figure 12: Interrupt Structure ................................................................................................................. 46
Figure 13: Automatic Temperature Compensation ................................................................................. 53
Figure 14: Optical Interface .................................................................................................................... 57
Figure 15: Optical Interface (UART1) ..................................................................................................... 58
Figure 16: Connecting an External Load to DIO Pins ............................................................................. 59
Figure 17: LCD Waveforms ................................................................................................................... 64
Figure 18: 3-wire Interface. Write Command, HiZ=0. ............................................................................. 66
Figure 19: 3-wire Interface. Write Command, HiZ=1 .............................................................................. 67
Figure 20: 3-wire Interface. Read Command. ........................................................................................ 67
Figure 21: 3-Wire Interface. Write Command when CNT=0 ................................................................... 67
Figure 22: 3-wire Interface. Write Command when HiZ=1 and WFR=1. ................................................. 67
Figure 23: SPI Slave Port - Typical Multi-Byte Read and Write operations .............................................. 69
Figure 24: Voltage, Current, Momentary and Accumulated Energy ......................................................... 74
Figure 25: Operation Modes State Diagram ........................................................................................... 75
Figure 26: MPU/CE Data Flow ............................................................................................................... 84
Figure 27: Resistive Voltage Divider (Voltage Sensing) .......................................................................... 85
Figure 28. CT with Single-Ended Input Connection (Current Sensing) .................................................... 85
Figure 29: CT with Differential Input Connection (Current Sensing) ........................................................ 85
Figure 30: Differential Resistive Shunt Connections (Current Sensing) ................................................... 85
Figure 31: System Using Three-Remotes and One-Local (Neutral) Sensor ............................................ 86
Figure 32. System Using Current Transformers ..................................................................................... 87
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Figure 33: I
C EEPROM Connection ...................................................................................................... 93
Figure 34: Connections for UART0 ........................................................................................................ 93
Figure 35: Connection for Optical Components ...................................................................................... 94
Figure 36: External Components for the RESET Pin: Push-Button (Left), Production Circuit (Right) ....... 94
Figure 37: External Components for the Emulator Interface ................................................................... 95
Figure 38. Trim Fuse Bit Mapping ........................................................................................................ 117
Figure 39: CE Data Flow: Multiplexer and ADC .................................................................................... 130
Figure 40: CE Data Flow: Scaling, Gain Control, Intermediate Variables for one Phase........................ 130
Figure 41: CE Data Flow: Squaring and Summation Stages ................................................................. 131
Figure 42: Wh Error from 200 A to 0.1 A at 60 Hz, 240 VAC ................................................................ 146
Figure 43: VARh Error from 200 A to 0.1 A at 60 Hz, 240 VAC ............................................................. 146
Figure 44: Wh Error from 200 A to 0.1 A at Various Frequencies (0° Load angle, 240 VAC) ................. 147
Figure 45: 100-pin LQFP Package Outline ........................................................................................... 148
Figure 46: Pinout for the LQFP-100 Package ....................................................................................... 149
Figure 47: I/O Equivalent Circuits ......................................................................................................... 154
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