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Teridian Semiconductor - Metrology Processors

Numéro de référence 71M6545H
Description Metrology Processors
Fabricant Teridian Semiconductor 
Logo Teridian Semiconductor 





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71M6545H fiche technique
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

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