71m6545h-igtr/f Maxim Integrated Products, Inc., 71m6545h-igtr/f Datasheet

71m6545h-igtr/f

Manufacturer Part Number

71m6545h-igtr/f

Description

Metrology Processors

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.71M6545H-IGTRF.pdf (134 pages)

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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.

GENERAL DESCRIPTION

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.

v1.0

NEUTRAL

HOST

Shunt Resistor Sensors

Pulse Transformers

A Maxim Integrated Products Brand

XFER_BUSY

SPI_CKI

SPI_DI

SPI_DO

SPI_CSZ

SAG

This system is referenced to Neutral

NEUTRAL

VADC9 (VB)

VADC8 (VA)

IADC0

IADC1

IADC6

IADC7

IADC4

IADC5

IADC2

IADC3

SPI INTERFACE

VADC10 (VC)

*IN = Optional Neutral Current

MUX and ADC

SERIAL PORT

MEMORY

FLASH

VREF

ICE

}

IN*

LOAD

TEMPERATURE

V3P3A V3P3SYS

71M6545/H

TERIDIAN

SENSOR

TIMERS

POWER SUPPLY

COMPUTE

MPU

RAM

RTC

ENGINE

GNDA GNDD

OSCILLATOR/

DIO, PULSES,

REGULATOR

PWR MODE

CONTROL

BATTERY

MONITOR

VBAT_RTC

LEDs

PLL

WPULSE

XPULSE

RPULSE

YPULSE

10/7/2010

V3P3D

XOUT

DIO

XIN

PULSES

C or µWire

EEPROM

RTC

BATTERY

DIO

32 kHz

3.3 VDC

FEATURES

• Up to < 0.1% Accuracy Over 2000:1

• Exceeds IEC 62053/ANSI C12.20 Standards

• Seven Sensor Inputs with Neutral Current

• Selectable Gain of 1 or 8 for One Current

• High-Speed Wh/VARh Pulse Outputs with

• Flash/RAM Size

• Up to Four Pulse Outputs with Pulse Count

• Four-Quadrant Metering, Phase

• Digital Temperature Compensation

• Independent 32-Bit Compute Engine

• 46–64Hz Line Frequency Range with the

• Phase Compensation (±7°)

• 1µA Supply Current in Sleep Mode

• Flash Security

• In-System Program Update

• 8-Bit MPU (80515), Up to 5 MIPS, for

• Up to 29 DIO Pins

• Hardware Watchdog Timer (WDT)

• I

• SPI Interface for Host:

• UART

• Industrial Temperature Range

• 64-Pin Lead(Pb)-Free LQFP Package

Measurement, Differential Mode Selectable

for Current Inputs

Input to Support Shunts

Programmable Width

Sequencing

Same Calibration

Optional Implementation of Postprocessing

and Host Support Functions (Optional Use)

Metrology Processors

Current Range

C/MICROWIRE® EEPROM Interface

32KB/3KB (71M6545)

64KB/5KB (71M6545H)

Metrology Compensation

Accurate RTC for TOU Functions with

Automatic Temperature Compensation

for Crystal in All Power Modes

Full Access to Shared Memory Space

Flash Program Capability

71M6545/71M6545H

19-5378; Rev 1.0; 4/11

DATA SHEET

April 2011

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