19-5373; Rev 2; 2/12
71M6533/G/H and 71M6534/H
Energy Meter ICs
DATA SHEET
GENERAL DESCRIPTION
The Teridian™ 71M6533 and 71M6534 are third-generation
polyphase metering systems-on-chips (SoCs) with a 10MHz 8051-
compatible MPU core, low-power RTC, flash, and LCD driver. The
Single Converter Technology® with a 22-bit delta-sigma ADC, seven
analog inputs, digital temperature compensation, precision voltage
reference, and a 32-bit computation engine (CE) supports a wide
range of metering applications with very few external components.
The 71M6533 and 71M6534 add several new features to the
Teridian flagship 71M6513 polyphase meters, including an SPI
interface, advanced power management with < 1µA sleep current,
4KB shared RAM, and 128KB (71M6533/H, 71M6534), or 256KB
(71M6533G, 71M6534H) flash, which can be programmed in the
field with new code and/or data during meter operation. Higher
processing and sampling rates and larger memory offer a
powerful metering platform for commercial and industrial meters
with up to class 0.2 accuracy.
A complete array of ICE and development tools, programming
libraries and reference designs enable rapid development and
certification of meters that meet all ANSI and IEC electricity metering
standards worldwide.
LIVE
NEUT
LIVE
LIVE
FEATURES
•
Wh Accuracy < 0.1% Over 2000:1 Range
•
Exceeds IEC 62053/ANSI C12.20 Standards
•
Seven Sensor Inputs with Neutral Current
Measurement
•
Low-Jitter Wh and VARh Plus Two Additional
Pulse Test Outputs (4 Total, 10kHz max) with
Pulse Count
•
Four-Quadrant Metering
•
Phase Sequencing
•
Line Frequency Count for RTC
•
Digital Temperature Compensation
•
Independent 32-Bit CE
•
46-64 Hz Line Frequency Range with Same
Calibration; Phase Compensation (± 7°)
•
Three Battery-Backup Modes with Wake-Up
on Timer or Pushbutton:
Brownout Mode (82µA typ, 71M6533)
LCD Mode (21µA typ, DAC active)
Sleep Mode (0.7µA typ)
•
Energy Display During Mains Power Failure
•
39mW (typ) Consumption at 3.3V, MPU
Clock Frequency 614kHz
•
8-Bit MPU (80515), 10MHz (max), One
Clock Cycle per Instruction with Integrated
ICE for Debug
•
LCD Driver with Four Common Segment
Drivers:
Up to 228 Pixels (71M6533) or 300 Pixels
(71M6534)
•
Four Dedicated + 35 (71M6533) or 48
(71M6534) Multifunction DIO Pins
•
RTC for TOU Functions with Clock-Rate Adjust
Register
•
Hardware Watchdog Timer, Power-Fail Monitor
•
I
2
C/MICROWIRE® EEPROM Interface
•
High-Speed Slave SPI Interface to Data RAM
•
Two UARTs for IR and AMR, IR Driver with
Modulation
•
Flash Memory with Security and In-System
Program Update:
128KB (71M6533/H, 71M6534)
256KB (71M6533G, 71M6534H)
•
4KB RAM
•
Industrial Temperature Range
•
100-Pin (71M6533/G/H) or 120-Pin
(71M6534/H) Lead(Pb)-Free LQFP Package
CT / COIL
LOAD
POWER SUPPLY
NEUTRAL
CONVERTER
IA
VA
IB
VB
IC
VC
ID
VREF
SERIAL PORTS
V3P3A V3P3SYS GNDA GNDD
PWR MODE
CONTROL
WAKE-up
REGULATOR
VBAT
V2P5
BATTERY
LCD DRIVER
DIO ,
PULSE
COM0..3
SEG
SEG/ DIO
TERIDIAN
71M6533
71M6534
TEMP
SENSOR
RAM
COMPUTE
ENGINE
FLASH
8888.8888
PULSES
,
DIO
I
2
C or µWire
EEPROM
AMR
TX
RX
RX
TX
IR
DIO
MOD
COMPARATOR
POWER
FAULT
V1
V2*
* 71M6534 only
RTC
TIMERS
ICE
MPU
OSC/ PLL
XIN
XOUT
9/24/2008
32 kHz
Teridian is a trademark and Single Converter Technology is a registered
trademark of Maxim Integrated Products, Inc.
MICROWIRE is a registered trademark of National Semiconductor Corp.
Rev 2
1
71M6533/G/H and 71M6534/H Data Sheet
FDS_6533_6534_004
Table of Contents
1
Hardware Description .................................................................................................................... 9
1.1 Hardware Overview ............................................................................................................... 9
1.2 Analog Front End (AFE)........................................................................................................ 9
1.2.1 Signal Input Pins ......................................................................................................... 9
1.2.2 Input Multiplexer ........................................................................................................ 10
1.2.3 A/D Converter (ADC) ................................................................................................. 11
1.2.4 FIR Filter ................................................................................................................... 11
1.2.5 Voltage References ................................................................................................... 12
1.2.6 Temperature Sensor.................................................................................................. 13
1.2.7 Battery Monitor .......................................................................................................... 13
1.2.8 AFE Functional Description ....................................................................................... 13
1.3 Digital Computation Engine (CE) ....................................................................................... 14
1.3.1 Meter Equations ........................................................................................................ 15
1.3.2 Real-Time Monitor ..................................................................................................... 16
1.3.3 Pulse Generators ...................................................................................................... 16
1.3.4 Data RAM (XRAM) .................................................................................................... 16
1.3.5 CE Functional Overview ............................................................................................ 17
1.3.6 Delay Compensation ................................................................................................. 18
1.4 80515 MPU Core .................................................................................................................. 19
1.4.1 Memory Organization and Addressing ....................................................................... 19
1.4.2 Special Function Registers (SFRs) ............................................................................ 21
1.4.3 Generic 80515 Special Function Registers ................................................................ 22
1.4.4 71M6533/71M6534-Specific Special Function Registers ............................................ 25
1.4.5 Instruction Set ........................................................................................................... 26
1.4.6 UARTs ...................................................................................................................... 26
1.4.7 Timers and Counters ................................................................................................. 29
1.4.8 WD Timer (Software Watchdog Timer) ...................................................................... 30
1.4.9 Interrupts................................................................................................................... 30
1.5 On-Chip Resources............................................................................................................. 37
1.5.1 Oscillator ................................................................................................................... 37
1.5.2 PLL and Internal Clocks............................................................................................. 37
1.5.3 Real-Time Clock (RTC) ............................................................................................. 38
1.5.4 Temperature Sensor.................................................................................................. 39
1.5.5 Physical Memory ....................................................................................................... 39
1.5.6 Optical Interface ........................................................................................................ 42
1.5.7 Digital I/O .................................................................................................................. 42
1.5.8 LCD Drivers .............................................................................................................. 46
1.5.9 Battery Monitor .......................................................................................................... 47
1.5.10 EEPROM Interface .................................................................................................... 47
1.5.11 SPI Slave Port ........................................................................................................... 50
1.5.12 Hardware Watchdog Timer ........................................................................................ 53
1.5.13 Test Ports (TMUXOUT Pin) ....................................................................................... 54
1.5.14 V2 Comparator (71M6534/6534H Only) ..................................................................... 54
Functional Description ................................................................................................................ 55
2.1 Theory of Operation ............................................................................................................ 55
2.2 System Timing Summary.................................................................................................... 56
2.3 Battery Modes ..................................................................................................................... 57
2.3.1 BROWNOUT Mode ................................................................................................... 59
Rev 2
2
2
FDS_6533_6534_004
71M6533/G/H and 71M6534/H Data Sheet
3
4
2.3.2 LCD Mode ................................................................................................................. 59
2.3.3 SLEEP Mode............................................................................................................. 59
2.4 Fault and Reset Behavior ................................................................................................... 65
2.4.1 Reset Mode ............................................................................................................... 65
2.4.2 Power Fault Circuit .................................................................................................... 65
2.5 Wake Up Behavior............................................................................................................... 65
2.5.1 Wake on PB .............................................................................................................. 65
2.5.2 Wake on Timer .......................................................................................................... 66
2.6 Data Flow............................................................................................................................. 66
2.7 CE/MPU Communication .................................................................................................... 67
Application Information ............................................................................................................... 68
3.1 Connection of Sensors (CT, Resistive Shunt) ................................................................... 68
3.2 Distinction between 71M6533/71M6534 and 71M6533G/H/71M6534H Parts ..................... 68
3.3 Connecting 5 V Devices...................................................................................................... 69
3.4 Temperature Measurement................................................................................................. 69
3.5 Temperature Compensation ............................................................................................... 69
3.5.1 Temperature Coefficients .......................................................................................... 69
3.5.2 Temperature Compensation for VREF ....................................................................... 71
3.5.3 System Temperature Compensation.......................................................................... 72
3.5.4 Temperature Compensation for the RTC ................................................................... 72
3.6 Connecting LCDs ................................................................................................................ 72
3.7 Connecting I
2
C EEPROMs .................................................................................................. 73
3.8 Connecting Three-Wire EEPROMs ..................................................................................... 73
3.9 UART0 (TX/RX) .................................................................................................................... 74
3.10 Optical Interface (UART1) ................................................................................................... 74
3.11 Connecting the V1 Pin ........................................................................................................ 75
3.12 Connecting the Reset Pin ................................................................................................... 75
3.13 Connecting the Emulator Port Pins.................................................................................... 76
3.14 Connecting a Battery .......................................................................................................... 76
3.15 Flash Programming ............................................................................................................ 77
3.16 MPU Firmware Library ........................................................................................................ 77
3.17 Crystal Oscillator ................................................................................................................ 77
3.18 Meter Calibration ................................................................................................................. 78
Firmware Interface ....................................................................................................................... 79
4.1 I/O RAM and SFR Map –Functional Order .......................................................................... 79
4.2 I/O RAM Description – Alphabetical Order......................................................................... 83
4.3 CE Interface Description..................................................................................................... 95
4.3.1 CE Program .............................................................................................................. 95
4.3.2 CE Data Format ........................................................................................................ 95
4.3.3 Constants .................................................................................................................. 95
4.3.4 Environment .............................................................................................................. 96
4.3.5 CE Calculations......................................................................................................... 97
4.3.6 CE Front End Data (Raw Data).................................................................................. 97
4.3.7 CE Status and Control ............................................................................................... 98
4.3.8 CE Transfer Variables ............................................................................................. 100
4.3.9 Temperature Measurement and Temperature Compensation .................................. 102
4.3.10 Pulse Generation..................................................................................................... 102
4.3.11 Noise Suppression and Version Parameters ............................................................ 104
4.3.12 CE Calibration Parameters ...................................................................................... 104
4.3.13 CE Flow Diagrams .................................................................................................. 105
3
Rev 2
71M6533/G/H and 71M6534/H Data Sheet
5
FDS_6533_6534_004
Electrical Specifications ............................................................................................................ 107
5.1 Absolute Maximum Ratings.............................................................................................. 107
5.2 Recommended External Components ............................................................................. 108
5.3 Recommended Operating Conditions.............................................................................. 108
5.4 Performance Specifications ............................................................................................. 109
5.4.1 Input Logic Levels ................................................................................................... 109
5.4.2 Output Logic Levels................................................................................................. 109
5.4.3 Power-Fault Comparator ......................................................................................... 109
5.4.4 V2 Comparator (71M6534 only)............................................................................... 109
5.4.5 Battery Monitor ........................................................................................................ 110
5.4.6 Supply Current ........................................................................................................ 110
5.4.7 V3P3D Switch ......................................................................................................... 110
5.4.8 2.5 V Voltage Regulator........................................................................................... 111
5.4.9 Low-Power Voltage Regulator ................................................................................. 111
5.4.10 Crystal Oscillator ..................................................................................................... 111
5.4.11 Optical Interface ...................................................................................................... 111
5.4.12 LCD DAC ................................................................................................................ 112
5.4.13 LCD Drivers ............................................................................................................ 112
5.4.14 Temperature Sensor................................................................................................ 113
5.4.15 VREF and VBIAS .................................................................................................... 114
5.4.16 ADC Converter, V3P3A Referenced ........................................................................ 115
5.5 Timing Specifications ....................................................................................................... 116
5.5.1 Flash Memory ......................................................................................................... 116
5.5.2 EEPROM Interface .................................................................................................. 116
5.5.3 RESET .................................................................................................................... 116
5.5.4 RTC ........................................................................................................................ 116
5.5.5 SPI Slave Port (MISSION Mode) ............................................................................. 117
5.6 Typical Performance Data ................................................................................................ 118
5.6.1 Accuracy over Current ............................................................................................. 118
5.6.2 Accuracy over Temperature..................................................................................... 119
5.7 Package Outline Drawings ............................................................................................... 119
5.7.1 71M6533 (100-Pin LQFP)........................................................................................ 119
5.7.2 71M6534/6534H (120-Pin LQFP) ............................................................................ 120
5.8 Pinout ................................................................................................................................ 121
5.8.1 71M6533/71M6533G/71M6533H Pinout (100-Pin LQFP) ......................................... 121
5.8.2 71M6534/71M6534H Pinout (120-Pin LQFP) ........................................................... 122
5.9 Pin Descriptions................................................................................................................ 123
5.9.1 Power and Ground Pins........................................................................................... 123
5.9.2 Analog Pins ............................................................................................................. 123
5.9.3 Digital Pins .............................................................................................................. 124
5.9.4 I/O Equivalent Circuits ............................................................................................. 126
6
Ordering Information ................................................................................................................. 127
7
Related Information ................................................................................................................... 127
8
Contact Information ................................................................................................................... 127
Appendix A: Acronyms ..................................................................................................................... 128
Appendix B: Revision History ........................................................................................................... 129
4
Rev 2
FDS_6533_6534_004
71M6533/G/H and 71M6534/H Data Sheet
Figures
Figure 2: General Topology of a Chopped Amplifier ............................................................................... 12
Figure 4: AFE Block Diagram................................................................................................................. 14
Figure 5: Samples from Multiplexer Cycle .............................................................................................. 17
Figure 7: Interrupt Structure ................................................................................................................... 36
Figure 8: Optical Interface...................................................................................................................... 42
Figure 9: Connecting an External Load to DIO Pins ............................................................................... 46
Figure 11: 3-wire Interface. Write Command, HiZ=1 .............................................................................. 49
Figure 12: 3-wire Interface. Read Command. ........................................................................................ 49
Figure 13: 3-Wire Interface. Write Command when CNT=0 ................................................................... 49
Figure 15: SPI Slave Port: Read Operation with Gap ............................................................................. 51
Figure 16: SPI Slave Port: Typical Read and Write Operations .............................................................. 53
Figure 17: Functions Defined by V1 ....................................................................................................... 53
Figure 18: Voltage, Current, Momentary and Accumulated Energy......................................................... 55
Figure 19: Timing Relationship between ADC MUX and Compute Engine.............................................. 56
Figure 20: RTM Output Format .............................................................................................................. 56
Figure 21: Operation Modes State Diagram ........................................................................................... 57
Figure 23: Power-Up Timing with V3P3SYS and VBAT Tied Together ................................................... 60
Figure 24: Power-Up Timing with VBAT Only ......................................................................................... 61
Figure 25: Functional Blocks in BROWNOUT Mode ............................................................................... 62
Figure 26: Functional Blocks in LCD Mode............................................................................................. 63
Figure 28: Wake Up Timing ................................................................................................................... 66
Figure 29: MPU/CE Data Flow ............................................................................................................... 66
Figure 30: MPU/CE Communication ...................................................................................................... 67
Figure 31: Resistive Voltage Divider ...................................................................................................... 68
Figure 32: CT with Single Ended (Left) and Differential Input (Right) Connection.................................... 68
Figure 33: Resistive Shunt (Left), Rogowski Sensor (Right) ................................................................... 68
Figure 34: Error Band for VREF over Temperature (Regular-Accuracy Parts) ........................................ 71
Figure 35: Error Band for VREF over Temperature (High-Accuracy Parts) ............................................. 71
Figure 36: Connecting LCDs .................................................................................................................. 73
Figure 37: I
2
C EEPROM Connection...................................................................................................... 73
Figure 38: Three-Wire EEPROM Connection ......................................................................................... 74
Figure 39: Connections for UART0 ........................................................................................................ 74
Figure 40: Connection for Optical Components ...................................................................................... 75
Figure 41: Voltage Divider for V1 ........................................................................................................... 75
Figure 42: External Components for the RESET Pin: Push-Button (Left), Production Circuit (Right) ....... 76
Figure 43: External Components for the Emulator Interface ................................................................... 76
Figure 45: CE Data Flow: Multiplexer and ADC .................................................................................... 105
Figure 47: CE Data Flow: Squaring and Summation Stages ................................................................. 106
Figure 48: SPI Slave Port (MISSION Mode) Timing ............................................................................. 117
Figure 49: Wh Accuracy (0.1 A - 200 A, 240 V, Room Temperature) at Various Frequencies (Differential
Mode, CTs) .................................................................................................................................. 118
Figure 50: Typical Wh Accuracy (0.02 A - 200 A, 240 V, Room Temperature), Various Load Angles
(Differential Mode, CTs) ................................................................................................................ 118
Figure 51: 71M6533/71M6533G/71M6533H 100-Pin LQFP Package Outline ....................................... 119
Figure 52: 71M6534/6534H 120-Pin LQFP Package Outline ................................................................ 120
Figure 53: Pinout for 71M6533/71M6533G/71M6533H LQFP-100 Package ......................................... 121
Figure 54: Pinout for 71M6534/71M6534H LQFP-120 Package ........................................................... 122
Rev 2
5
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