71M6511 Maxim, 71M6511 Datasheet - Page 4

• Manufacturer Part Number: 71M6511
• Description: The 71M6511 and 71M6511H are highly integrated SoCs with an MPU core, RTC, flash, and LCD driver
• Manufacturer: Maxim

Page: 4 of 98
A Maxim Integrated Products Brand
Recommended External Components ....................................................................................................... 91
Packaging Information .............................................................................................................................. 92
ORDERING INFORMATION .................................................................................................................... 97
Figures
Figure 1: IC Functional Block Diagram .......................................................................................................................... 7
Figure 2: General Topology of a Chopped Amplifier ..................................................................................................... 10
Figure 3: AFE Block Diagram...................................................................................................................................... 11
Figure 4: Samples in Multiplexer Cycle ....................................................................................................................... 13
Figure 5: Accumulation Interval.................................................................................................................................. 13
Figure 6: Memory Map .............................................................................................................................................. 15
Figure 7: Interrupt Structure ...................................................................................................................................... 36
Figure 8: DIO Ports Block Diagram ............................................................................................................................. 37
Figure 9: Oscillator Circuit ......................................................................................................................................... 40
Figure 10: LCD Voltage Boost Circuitry ....................................................................................................................... 41
Figure 11: Voltage Range for V1 ................................................................................................................................ 43
Figure 12: Voltage. Current, Momentary and Accumulated Energy................................................................................ 47
Figure 13: Timing Relationship between ADC MUX, CE, and Serial Transfers ................................................................ 48
Figure 14: RTM Output Format .................................................................................................................................. 49
Figure 15: SSI Timing, (SSI_FPOL = SSI_RDYPOL = 0) ............................................................................................ 49
Figure 16: SSI Timing, 16-bit Field Example (External Device Delays SRDY) ................................................................. 49
Figure 17: MPU/CE Data Flow .................................................................................................................................... 50
Figure 18: MPU/CE Communication (Functional) ......................................................................................................... 51
Figure 19: MPU/CE Communication (Processing Sequence) ........................................................................................ 51
Figure 20: Timing Diagram for Voltages, Current and Operation Modes after Power-Up ................................................. 52
Figure 21: Chop Polarity w/ Automatic Chopping ........................................................................................................ 54
Figure 22: Sequence with Alternate Multiplexer Cycles ................................................................................................ 54
Figure 23: Sequence with Alternate Multiplexer Cycles and Controlled Chopping ........................................................... 55
Figure 24: Wh Accuracy, 0.3A - 200A/240V ................................................................................................................ 75
Figure 25: VARh Accuracy for 0.3A to 200A/240V Performance ................................................................................... 75
Figure 27: Meter Accuracy over Harmonics at 240V, 30A ............................................................................................ 76
Figure 29: Resistive Voltage Divider (left), Current Transformer (right) ......................................................................... 77
Figure 30: Resistive Shunt (left), Rogowski Coil (right) ............................................................................................... 77
Figure 31: Crystal Frequency over Temperature .......................................................................................................... 78
Figure 32: Crystal Compensation ............................................................................................................................... 79
Figure 33: Connecting LCDs ...................................................................................................................................... 80
Figure 34: LCD Boost Circuit...................................................................................................................................... 81
Figure 35: EEPROM Connection ................................................................................................................................. 82
Figure 36: Interfacing RX to a 0-5V Signal .................................................................................................................. 82
Figure 37: Connection for Optical Components ........................................................................................................... 83
Figure 38: Voltage Divider for V1 ............................................................................................................................... 83
Figure 39: External Components for RESETZ .............................................................................................................. 84
RESETZ..................................................................................................................................... 90
COMPARATORS ....................................................................................................................... 90
RAM AND FLASH MEMORY ...................................................................................................... 91
FLASH MEMORY TIMING .......................................................................................................... 91
EEPROM INTERFACE ............................................................................................................... 91
Pinout (Top View) ....................................................................................................................... 93
Pin Descriptions ......................................................................................................................... 94
I/O Equivalent Circuits: ............................................................................................................... 96
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Single-Phase Energy Meter IC
71M6511/71M6511H
DATA SHEET
NOVEMBER 2010
V2.7