71m6521be Maxim Integrated Products, Inc., 71m6521be Datasheet

71m6521be

Manufacturer Part Number

71m6521be

Description

Energy Meter Ic

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.71M6521BE.pdf (97 pages)

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Current page: 1 of 97
Download datasheet (2Mb)

The TERIDIAN 71M6521BE is a highly integrated SOC with an MPU core,

FLASH and LCD driver. TERIDIAN’s patented Single Converter Technol-

ogy™ with a 22-bit delta-sigma ADC, four analog inputs, digital temperature

compensation, precision voltage reference, battery voltage monitor, and 32-

bit computation engine (CE) supports a wide range of residential metering

applications with very few low-cost external components. A 32kHz crystal

time-base for the entire system further reduces system cost. The IC

supports 2-wire single-phase residential metering along with tamper-

detection mechanisms.

Maximum design flexibility is provided by multiple UARTs, I

14 DIO pins and in-system programmable FLASH memory, which can be

updated with data or application code in operation.

A complete array of ICE and development tools, programming libraries and

reference designs enable rapid development and certification of AMR and

Prepay meters that comply with worldwide electricity metering standards.

V1.0

NEUT

32 kHz

GENERAL DESCRIPTION

CT/SHUNT

POWER

FAULT

AMR

RX/DIO1

TX/DIO2

COMPARATOR

SERIAL PORTS

VOLTAGE REF

XIN

XOUT

CONVERTER

VBIAS

VREF

DRIVE/MOD

LOAD

OSC/PLL

SENSE

71M6521BE

TERIDIAN

COMPUTE

POWER SUPPLY

SENSOR

ENGINE

TIMERS

FLASH

MPU

V3.3A

TEMP

RAM

ICE

V3.3

SYS

GNDA GNDD

REGULATOR

PWR MODE

DIO, PULSE

SEG 24..31/

SEG 34..37/

SEG 32,33,

CONTROL

WAKE-UP

DIO 14..17

SEG0..18

DIO 4..11

COM0..3

VBAT

V2.5

11/14/2007

ICE_E

C, μWire, up to

BATTERY

888888.88

TEST PULSE

EEPROM

C or µWire

3.3V LCD

V3P3D

GNDD

• < 0.4% Wh accuracy over 2000:1 current range

• Exceeds IEC62053 / ANSI C12.20 standards

• Voltage reference < 40ppm/°C

• Four sensor inputs—VDD referenced

• Low jitter Wh test output (10kHz maximum)

• Pulse count for Wh pulse output

• Tamper detection: Neutral current with CT or

• Line frequency count for time keeping

• Digital temperature compensation

• Sag detection for phase A and B

• Independent 32-bit compute engine

• 46-64Hz line frequency range with same

• Phase compensation (±7°)

• Battery monitor

• Three battery modes w/ wake-up on push-button

• Energy display on main power failure

• Wake-up with push-button

• 22-bit delta-sigma ADC

• 8-bit MPU (80515), 1 clock cycle per instruction

• Hardware watchdog timer, power fail monitor

• LCD driver (up to 140 pixels)

• Up to 14 general purpose I/O pins

• 32kHz time base

• 8KB FLASH with security

• 2KB MPU XRAM

• Two UARTs for IR and AMR

• Digital I/O pins compatible with 5V inputs

• 64-pin LQFP

• Lead Free package

and over temperature

shunt

calibration

or timer:

w/ integrated ICE for MPU debug

Brownout mode (48µA)

LCD mode (5.7µA)

Sleep mode (2.9µA)

Energy Meter IC

FEATURES

71M6521BE

DATA SHEET

JANUARY 2008

Page: 1 of 97

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