71M6545 PDF даташит
Спецификация 71M6545 изготовлена «Teridian Semiconductor» и имеет функцию, называемую «Metrology Processors». |
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Детали детали
Номер произв | 71M6545 |
Описание | Metrology Processors |
Производители | Teridian Semiconductor |
логотип |
30 Pages
No Preview Available ! |
19-5378; Rev 1.0; 4/11
A Maxim Integrated Products Brand
71M6545/71M6545H
Metrology Processors
DATA SHEET
April 2011
GENERAL DESCRIPTION
FEATURES
The 71M6545/71M6545H metrology processors are based on
Teridian’s 4th-generation metering architecture supporting the
71M6xxx series of isolated current sensing products that offer
drastic reduction in component count, immunity to magnetic
tampering, and unparalleled reliability. The 71M6545/71M6545H
integrate our Single Converter Technology® with a 22-bit delta-
sigma ADC, a customizable 32-bit computation engine (CE) for
core metrology functions, as well as a user-programmable 8051-
compatible application processor (MPU) core with up to 64KB
flash and up to 5KB RAM.
An external host processor can access metrology functions di-
rectly through the SPI™ interface, or alternatively through the
embedded MPU core in applications requiring metrology data
capture, storage, and preprocessing within the metrology
subsystem. In addition, the devices integrate an RTC, DIO, and
UART. 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.
• Up to < 0.1% Accuracy Over 2000:1
Current Range
• Exceeds IEC 62053/ANSI C12.20 Standards
• Seven Sensor Inputs with Neutral Current
Measurement, Differential Mode Selectable
for Current Inputs
• Selectable Gain of 1 or 8 for One Current
Input to Support Shunts
• High-Speed Wh/VARh Pulse Outputs with
Programmable Width
• Flash/RAM Size
32KB/3KB (71M6545)
64KB/5KB (71M6545H)
• Up to Four Pulse Outputs with Pulse Count
• Four-Quadrant Metering, Phase
Sequencing
• Digital Temperature Compensation
Metrology Compensation
Shunt Resistor Sensors
C
NEUTRAL
B
A
LOAD
Accurate RTC for TOU Functions with
Automatic Temperature Compensation
for Crystal in All Power Modes
• Independent 32-Bit Compute Engine
• 46–64Hz Line Frequency Range with the
Same Calibration
POWER SUPPLY
www.DataSheet4U.net
This system is referenced to Neutral
NEUTRAL
HOST
Pulse Transformers
C
B
A
SPI_CKI
SPI_DI
SPI_DO
SPI_CSZ
XFER_BUSY
SAG
MUX and ADC
IADC0
IADC1
} IN*
VADC10 (VC)
IADC6
IADC7
} IC
VADC9 (VB)
IADC4
IADC5
}
IB
VADC8(VA)
IADC2
IADC3
} IA
V3P3A V3P3SYS GNDA GNDD
PWR MODE
CONTROL
TERIDIAN
PB
71M6545/H REGULATOR
TEMPERATURE
SENSOR
VBAT_RTC
BATTERY
MONITOR
VREF
SERIAL PORT
RX
TX
FLASH
MEMORY
RAM
MPU
RTC
TIMERS
OSCILLATOR/
PLL XIN
XOUT
DIO, PULSES,
LEDs
DIO
ICE
T
SPI INTERFACE
M
U
COMPUTE
ENGINE
X
V3P3D
WPULSE
XPULSE
RPULSE
YPULSE
10/7/2010
RTC
BATTERY
32 kHz
24
DIO
I2C or µWire
EEPROM
PULSES 3.3 VDC
*IN = Optional Neutral Current
• Phase Compensation (±7°)
• 1µA Supply Current in Sleep Mode
• Flash Security
• In-System Program Update
• 8-Bit MPU (80515), Up to 5 MIPS, for
Optional Implementation of Postprocessing
and Host Support Functions (Optional Use)
• Up to 29 DIO Pins
• Hardware Watchdog Timer (WDT)
• I2C/MICROWIRE® EEPROM Interface
• SPI Interface for Host:
Full Access to Shared Memory Space
Flash Program Capability
• UART
• Industrial Temperature Range
• 64-Pin Lead(Pb)-Free LQFP Package
Single Converter Technology is a registered trademark of Maxim Integrated Products, Inc.
SPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National Semiconductor Corp.
v1.0 © 2008–2011 Teridian Semiconductor Corporation 1
No Preview Available ! |
Data Sheet 71M6545/H
PDS_6545_009
Table of Contents
1 INTRODUCTION ........................................................................................................................... 10
2 Hardware Description.................................................................................................................. 11
2.1 Hardware Overview............................................................................................................... 11
2.2 Analog Front End (AFE)........................................................................................................ 12
2.2.1 Signal Input Pins ....................................................................................................... 13
2.2.2 Input Multiplexer........................................................................................................ 14
2.2.3 Delay Compensation ................................................................................................. 19
2.2.4 ADC Pre-Amplifier ..................................................................................................... 20
2.2.5 A/D Converter (ADC)................................................................................................. 20
2.2.6 FIR Filter ................................................................................................................... 20
2.2.7 Voltage References................................................................................................... 20
2.2.8 71M6xx3 Isolated Sensor Interface............................................................................ 21
2.3 Digital Computation Engine (CE)........................................................................................... 25
2.3.1 CE Program Memory................................................................................................. 25
2.3.2 CE Data Memory....................................................................................................... 25
2.3.3 CE Communication with the MPU.............................................................................. 25
2.3.4 Meter Equations ........................................................................................................ 26
2.3.5 Real-Time Monitor (RTM) .......................................................................................... 26
2.3.6 Pulse Generators ...................................................................................................... 26
2.3.7 CE Functional Overview ............................................................................................ 28
2.4 80515 MPU Core .................................................................................................................. 30
2.4.1 MPU Setup Code ...................................................................................................... 30
2.4.2 80515 MPU Overview................................................................................................ 30
2.4.3 Memory Organization and Addressing ....................................................................... 31
2.4.4 Special Function Registers (SFRs) ............................................................................ 33
2.4.5 Generic 80515 Special Function Registers ................................................................ 33
2.4.6 Instruction Set ........................................................................................................... 36
2.4.7 UARTs ...................................................................................................................... 36
2.4.8 Timers and Counters ................................................................................................. 38
2.4.9 WD Timer (Software Watchdog Timer) ...................................................................... 40
2.4.10 Interrupts................................................................................................................... 40
2.5www.DataSheet4U.net On-Chip Resources............................................................................................................... 46
2.5.1 Physical Memory....................................................................................................... 46
2.5.2 Oscillator................................................................................................................... 48
2.5.3 PLL and Internal Clocks............................................................................................. 48
2.5.4 Real-Time Clock (RTC) ............................................................................................. 49
2.5.5 71M6545/H Temperature Sensor............................................................................... 53
2.5.6 71M6xx3 Temperature Sensor .................................................................................. 54
2.5.7 71M6545/H Battery Monitor....................................................................................... 55
2.5.8 71M6xx3 VCC Monitor .............................................................................................. 55
2.5.9 UART Interface ......................................................................................................... 55
2.5.10 DIO Pins ................................................................................................................... 55
2.5.11 EEPROM Interface.................................................................................................... 57
2.5.12 SPI Slave Port........................................................................................................... 60
2.5.13 Hardware Watchdog Timer........................................................................................ 64
2.5.14 Test Ports (TMUXOUT and TMUX2OUT Pins)........................................................... 64
3 Functional Description ................................................................................................................ 66
2
© 2008–2011 Teridian Semiconductor Corporation
v1.0
No Preview Available ! |
PDS_6545_009
Data Sheet 71M6545/H
3.1 Theory of Operation .............................................................................................................. 66
3.2 SLP Mode (Sleep Mode) ....................................................................................................... 67
3.3 Fault and Reset Behavior...................................................................................................... 68
3.3.1 Events at Power-Down .............................................................................................. 68
3.3.2 Reset Sequence........................................................................................................ 69
3.4 Data Flow and Host Communication ..................................................................................... 69
4 Application Information............................................................................................................... 71
4.1 Connecting 5 V Devices........................................................................................................ 71
4.2 Directly Connected Sensors .................................................................................................. 71
4.3 Systems Using 71M6xx3 Isolated Sensors and Current Shunts ............................................. 72
4.4 System Using Current Transformers ..................................................................................... 73
4.5 Metrology Temperature Compensation.................................................................................. 74
4.5.1 Distinction Between Standard and High-Precision Parts ............................................ 74
4.5.2 Temperature Coefficients for the 71M6545 ................................................................ 75
4.5.3 Temperature Coefficients for the 71M6545H.............................................................. 75
4.5.4 Temperature Coefficients for the 71M6603 and 71M6103 (1% Energy Accuracy) ...... 75
4.5.5 Temperature Compensation for VREF and Shunt Sensors ........................................ 75
4.5.6 Temperature Compensation of VREF and Current Transformers ............................... 77
4.6 Connecting I2C EEPROMs .................................................................................................... 79
4.7 Connecting Three-Wire EEPROMs ....................................................................................... 79
4.8 UART (TX/RX) ...................................................................................................................... 79
4.9 Connecting the Reset Pin...................................................................................................... 79
4.10 Connecting the Emulator Port Pins........................................................................................ 80
4.11 Flash Programming............................................................................................................... 80
4.11.1 Flash Programming via the ICE Port.......................................................................... 80
4.11.2 Flash Programming via the SPI Port.......................................................................... 80
4.12 MPU Demonstration Code..................................................................................................... 81
4.13 Crystal Oscillator................................................................................................................... 81
4.14 Meter Calibration................................................................................................................... 81
5 Firmware Interface....................................................................................................................... 82
5.1 I/O RAM Map –Functional Order ........................................................................................... 82
5.2 I/O RAM Map – Alphabetical Order ....................................................................................... 88
5.3 Reading the Info Page (71M6545H only)............................................................................... 98
www.DataSheet4U.net
5.4 CE Interface Description ..................................................................................................... 100
5.4.1 CE Program ............................................................................................................ 100
5.4.2 CE Data Format ...................................................................................................... 100
5.4.3 Constants................................................................................................................ 100
5.4.4 Environment............................................................................................................ 101
5.4.5 CE Calculations....................................................................................................... 101
5.4.6 CE Front End Data (Raw Data)................................................................................ 102
5.4.7 CE Status and Control............................................................................................. 103
5.4.8 CE Transfer Variables ............................................................................................. 105
5.4.9 Pulse Generation..................................................................................................... 107
5.4.10 CE Calibration Parameters ...................................................................................... 110
5.4.11 CE Flow Diagrams .................................................................................................. 111
6 71M6545/H Specifications ......................................................................................................... 113
v1.0
© 2008–2011 Teridian Semiconductor Corporation
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