|
|
PDF 71M6542F Data sheet ( Hoja de datos )
| Número de pieza | 71M6542F | |
| Descripción | Energy Meter ICs | |
| Fabricantes | Teridian Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de 71M6542F (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
19-5376; Rev 1.1; 4/11
A Maxim Integrated Products Brand
71M6541D/71M6541F/71M6542F
Energy Meter ICs
DATA SHEET
April 2011
GENERAL DESCRIPTION
FEATURES
The 71M6541D/71M6541F/71M6542F are Teridian’s 4th-generation
single-phase metering SoCs with a 5MHz 8051-compatible MPU core,
low-power RTC with digital temperature compensation, flash memory,
and LCD driver. Our Single Converter Technology® with a 22-bit delta-
sigma ADC, three or four analog inputs, digital temperature com-
pensation, precision voltage reference, and a 32-bit computation
engine (CE) supports a wide range of metering applications with
very few external components.
The 71M6541D/71M6541F/71M6542F support optional interfaces to
the Teridian 71M6x01 series of isolated sensors, which offer BOM
cost reduction, immunity to magnetic tamper, and enhanced
reliability. Other features include an SPI™ interface, advanced
power management, ultra-low-power operation in active and battery
modes, 3/5KB shared RAM and 32/64KB of flash memory that can be
programmed in the field with code and/or data during meter
operation and the ability to drive up to six LCD segments per SEG
driver pin. High processing and sampling rates combined with
differential inputs offer a powerful metering platform for residential
meters.
A complete array of code development tools, demonstration code,
and reference designs enable rapid development and certification of
meters that meet all ANSI and IEC electricity metering standards
worldwide.
Shunt
NEUTRAL
Shunt
LOAD
Note:
LINE This system is referenced to LINE
NEUTRAL
LINE
POWER SUPPLY
• 0.1% Accuracy Over 2000:1 Current Range
• Exceeds IEC 62053/ANSI C12.20 Standards
• Two Current Sensor Inputs with Selectable
Differential Mode
• Selectable Gain of 1 or 8 for One Current Input
to Support Shunts
• High-Speed Wh/VARh Pulse Outputs with
Programmable Width
• 32KB Flash, 3KB RAM (71M6541D)
• 64KB Flash, 5KB RAM (71M6541F/42F)
• Up to Four Pulse Outputs with Pulse Count
• Four-Quadrant Metering
• Digital Temperature Compensation:
- Metrology Compensation
- 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
• Phase Compensation (±10°)
• Three Battery-Backup Modes:
- Brownout Mode (BRN)
- LCD Mode (LCD)
- Sleep Mode (SLP)
• Wake-Up on Pin Events and Wake-On Timer
• 1µA in Sleep Mode
www.DataSheet4U.net TERIDIAN
71M6xx1
Pulse
Trans-
former
AMR
IR
HOST
MUX and ADC V3P3A V3P3SYS GNDA GNDD
IAP PWR MODE
IAN CONTROL
TERIDIAN WAKE-UP
71M6541D/F REGULATOR
VBAT
VA
VBAT_RTC
IBP TEMPERATURE BATTERY
IBN
SENSOR
MONITOR
VREF
SERIAL PORTS
TX
RX
MODUL- RX
ATOR TX
POWER FAULT
COMPARATOR
SPI INTERFACE
RAM
COMPUTE
ENGINE
FLASH
MEMORY
MPU
RTC
TIMERS
ICE
COM0...5
SEG
SEG/DIO
LCD DRIVER
DIO, PULSES
DIO
V3P3D
OSCILLATOR/
PLL XIN
XOUT
BATTERY
RTC
BATTERY
LCD DISPLAY
8888.8888
PULSES,
DIO
I2C or µWire
EEPROM
32 kHz
• Flash Security
• In-System Program Update
• 8-Bit MPU (80515), Up to 5 MIPS
• Full-Speed MPU Clock in Brownout Mode
• LCD Driver:
- Up to 6 Commons/Up to 56 Pins
• 5V LCD Driver with DAC
• Up to 51 Multifunction DIO Pins
• Hardware Watchdog Timer (WDT)
• I2C/MICROWIRE™ EEPROM Interface
• SPI Interface with Flash Program Capability
• Two UARTs for IR and AMR
• IR LED Driver with Modulation
• Industrial Temperature Range
11/5/2010
Single Converter Technology is a registered trademark of Maxim Integrated
Products, Inc.
SPI is a trademark of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
• 64-Pin (71M6541D/71M6541F) and 100-pin
(71M6542F) Lead(Pb)-Free LQFP Package
v1.1 © 2008–2011 Teridian Semiconductor Corporation 1
1 page  
Figures
Figure 1: IC Functional Block Diagram.....................................................................................................9
Figure 2. 71M6541D/F AFE Block Diagram (Local Sensors) .................................................................. 12
Figure 3. 71M6541D/F AFE Block Diagram with 71M6x01 ..................................................................... 13
Figure 4. 71M6542F AFE Block Diagram (Local Sensors)...................................................................... 13
Figure 5. 71M6542F AFE Block Diagram with 71M6x01......................................................................... 14
Figure 6: States in a Multiplexer Frame (MUX_DIV[3:0] = 3) .................................................................. 17
Figure 7: States in a Multiplexer Frame (MUX_DIV[3:0] = 4) .................................................................. 17
Figure 8: General Topology of a Chopped Amplifier............................................................................... 21
Figure 9: CROSS Signal with CHOP_E = 00........................................................................................... 21
Figure 10: RTM Timing .......................................................................................................................... 26
Figure 11: Timing relationship between ADC MUX, CE, and RTM Serial Transfer .................................. 26
Figure 12. Pulse Generator FIFO Timing ............................................................................................... 28
Figure 13: Accumulation Interval............................................................................................................ 29
Figure 14: Samples from Multiplexer Cycle (MUX_DIV[3:0] = 3)............................................................. 30
Figure 15: Samples from Multiplexer Cycle (MUX_DIV[3:0] = 4)............................................................. 30
Figure 16: Interrupt Structure................................................................................................................. 47
Figure 17: Automatic Temperature Compensation ................................................................................. 54
Figure 18: Optical Interface.................................................................................................................... 58
Figure 19: Optical Interface (UART1) ..................................................................................................... 59
Figure 20: Connecting an External Load to DIO Pins ............................................................................. 60
Figure 21: LCD Waveforms ................................................................................................................... 68
Figure 22: 3-wire Interface. Write Command, HiZ=0.............................................................................. 72
Figure 23: 3-wire Interface. Write Command, HiZ=1.............................................................................. 72
Figure 24: 3-wire Interface. Read Command......................................................................................... 72
Figure 25: 3-Wire Interface. Write Command when CNT=0................................................................... 73
Figure 26: 3-wire Interface. Write Command when HiZ=1 and WFR=1.................................................. 73
Figure 27: SPI Slave Port - Typical Multi-Byte Read and Write operations.............................................. 75
Figure 28: Voltage, Current, Momentary and Accumulated Energy......................................................... 80
Figure 29: Operation Modes State Diagram ........................................................................................... 81
Figure 30: MPU/CE Data Flow............................................................................................................... 91
Figure 31: Resistive Voltage Divider (Voltage Sensing).......................................................................... 92
Figure 32. CT with Single-Ended Input Connection (Current Sensing).................................................... 92
Figure 33: CT with Differential Input Connection (Current Sensing) ........................................................ 92
Figure 34: Differential Resistive Shunt Connections (Current Sensing)................................................... 92
www.DataSheet4U.net
Figure 35. 71M6541D/F with Local Sensors........................................................................................... 93
Figure 36: 71M6541D/F with 71M6x01 isolated Sensor.......................................................................... 94
Figure 37: 71M6542F with Local Sensors .............................................................................................. 95
Figure 38: 71M6542F with 71M6x01 Isolated Sensor............................................................................. 96
Figure 39: I2C EEPROM Connection.................................................................................................... 100
Figure 40: Connections for UART0 ...................................................................................................... 101
Figure 41: Connection for Optical Components.................................................................................... 102
Figure 42: External Components for the RESET Pin: Push-Button (Left), Production Circuit (Right)......... 102
Figure 43: External Components for the Emulator Interface ................................................................. 103
Figure 44: CE Data Flow: Multiplexer and ADC.................................................................................... 136
Figure 45: CE Data Flow: Scaling, Gain Control, Intermediate Variables .............................................. 136
Figure 46: CE Data Flow: Squaring and Summation Stages................................................................. 137
Figure 51: 64-pin LQFP Package Outline............................................................................................. 153
Figure 52: 100-pin LQFP Package Outline........................................................................................... 154
Figure 53: Pinout for the 71M6541D/F (LQFP-64 Package) ................................................................. 155
Figure 54: Pinout for the 71M6542F (LQFP-100 Package) ................................................................... 156
Figure 55: I/O Equivalent Circuits......................................................................................................... 161
v1.1
© 2008–2011 Teridian Semiconductor Corporation
5
5 Page 
2 Hardware Description
2.1 Hardware Overview
The Teridian 71M6541D/F and 71M6542F single-chip energy meter ICs integrate all primary functional
blocks required to implement a solid-state residential electricity meter. Included on the chip are:
• An analog front end (AFE) featuring a 22-bit second-order sigma-delta ADC
• An independent 32-bit digital computation engine (CE) to implement DSP functions
• An 8051-compatible microprocessor (MPU) which executes one instruction per clock cycle (80515)
• A precision voltage reference (VREF)
• A temperature sensor for digital temperature compensation:
- Metrology digital temperature compensation (MPU)
- Automatic RTC digital temperature compensation operational in all power states
• LCD drivers
• RAM and Flash memory
• A real time clock (RTC)
• A variety of I/O pins
• A power failure interrupt
• A zero-crossing interrupt
• Selectable current sensor interfaces for locally-connected sensors as well as isolated sensors (i.e.,
using the 71M6x01 companion IC with a shunt resistor sensor)
• Resistive Shunt and Current Transformers are supported
Resistive Shunts and Current Transformers (CT) current sensors are supported. Resistive shunt current
sensors may be connected directly to the 71M654x device or isolated using a companion 71M6x01
isolator IC in order to implement a variety of single-phase / split-phase (71M6541D/F) or two-phase
(71M6542F) metering configurations. An inexpensive, small size pulse transformer is used to isolate the
71M6x01 isolated sensor from the 71M654x. The 71M654x performs digital communications bi-
directionally with the 71M6x01 and also provides power to the 71M6x01 through the isolating pulse
transformer. Isolated (remote) shunt current sensors are connected to the differential input of the
71M6x01. Included on the 71M6x01 companion isolator chip are:
• Digital isolation communications interface
• An analog front end (AFE)
• A precision voltage reference (VREF)
• A temperature sensor (for digital temperature compensation)
•www.DataSheet4U.net A fully differential shunt resistor sensor input
• A pre-amplifier to optimize shunt current sensor performance
• Isolated power circuitry obtains dc power from pulses sent by the 71M654x
In a typical application, the 32-bit compute engine (CE) of the 71M654x sequentially processes the samples
from the voltage inputs on analog input pins and from the external 71M6x01 isolated sensors and performs
calculations to measure active energy (Wh) and reactive energy (VARh), as well as A2h, and V2h for four-
quadrant metering. These measurements are then accessed by the MPU, processed further and output
using the peripheral devices available to the MPU.
In addition to advanced measurement functions, the clock function allows the 71M6541D/F and 71M6542F
to record time-of-use (TOU) metering information for multi-rate applications and to time-stamp tamper or
other events. Measurements can be displayed on 3.3 V LCDs commonly used in low-temperature
environments. An on-chip charge pump is available to drive 5 V LCDs. Flexible mapping of LCD display
segments facilitate integration of existing custom LCDs. Design trade-off between the number of LCD
segments and DIO pins can be implemented in software to accommodate various requirements.
In addition to the temperature-trimmed ultra-precision voltage reference, the on-chip digital temperature
compensation mechanism includes a temperature sensor and associated controls for correction of unwanted
temperature effects on measurement and RTC accuracy, e.g., to meet the requirements of ANSI and IEC
standards. Temperature-dependent external components such as crystal oscillator, resistive shunts, current
v1.1
© 2008–2011 Teridian Semiconductor Corporation
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet 71M6542F.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| 71M6542F | Energy Meter ICs | Teridian Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |