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78M6612

Single-Phase, Dual-Outlet Power and Energy Measurement IC

Teridian Semiconductor Corporation 

19-5348; Rev 2; 1/12

78M6612

Single-Phase, Dual-Outlet

Power and Energy Measurement IC

DS_6612_001

DESCRIPTION

The Teridian™ 78M6612 is a highly integrated, single-phase,

power and energy measurement and monitoring system-on-

chip (SoC) that includes a 32-bit compute engine (CE), an

MPU core, RTC, and flash. Our Single Converter

Technology® with a 22-bit delta-sigma ADC, four analog

inputs, digital temperature compensation, and precision

voltage reference supports a wide range of single-phase,

dual-outlet power measurement applications with very few

external components.

With measurement technology leveraged from Maxim’s flagship

utility metering ICs, the device offers features including 32 KB

of flash program memory, 2 KB shared RAM, three low-power

modes with internal timer or external event wake-up, two

UARTs, I2C/MICROWIRE® EEPROM I/F, and an in-system

programmable flash. Complete outlet measurement unit (OMU)

and AC power monitor (AC-PMON) firmware is available or can

be preloaded into the IC.

A complete array of ICE and development tools, programming

libraries and reference designs enable rapid development and

certification of power and energy measurement solutions that

meet the most demanding worldwide electricity metering

standards.

LIVE

CT

NEUT

OUTLET

POWER SUPPLY

POWER

FAULT

32 kHz

CONVERTER

IA

VA

IB

VB

VOLTAGE REF

VREF

VBIAS

SERIAL PORTS

TX0

RX0

RX1

TX1

COMPARATOR

V1

OSC/PLL

XIN

XOUT

V3.3A

V3.3

SYS

TERIDIAN

78M6612

GNDA GNDD

PWR MODE

CONTROL

WAKE-UP

REGULATOR

VBAT

V2.5

TEMP

SENSOR

DIO, PULSE

RAM

FLASH

COMPUTE

ENGINE

COM0..3

SEG0..18

SEG 24..31/

DIO 4..11

SEG 34..37/

DIO 14..17

MPU

RTC

TIMERS

SEG 32,33,

38/ICE

ICE_E

ICE

OPTIONAL

BATTERY

OPTIONAL

I2 C or µWire

EEPROM

V3P3D

GNDD

Teridian is a trademark and Single Converter Technology is a registered

trademark of Maxim Integrated Products, Inc.

MICROWIRE is a registered trademark of National Semiconductor Corp.

DATA SHEET

FEATURES

• Measures Each Outlet of a Duplex Receptacle with

a Single IC

• Provides Complete Energy Measurement and

Communication Protocol Capability in a Single IC

• Intelligent Switch Control Capability

• < 0.5% Wh Accuracy Over 2000:1 Current Range

and Over Temperature

• Exceeds IEC 62053/ANSIC12.20 Standards

• Voltage Reference < 40 ppm/°C

• Four Sensor Inputs – VDD Referenced

• Low Jitter Wh and VARh Pulse Test Outputs

(10 kHz max)

• Pulse Count for Pulse Outputs

• Line Frequency Count for RTC

• Digital Temperature Compensation

• Sag Detection for Phase A and B

• Independent 32-Bit Compute Engine

• 46-64 Hz Line Frequency Range with Same Calibration

• Phase Compensation (±7°)

• Battery Backup for RTC and Battery Monitor

• Three Battery Modes with Wake-Up Timer:

Brownout Mode (48 µA)

LCD Mode (5.7 µA)

Sleep Mode (2.9 µA)

• Energy Display on Main Power Failure

• Wake-Up Timer

• 22-Bit Delta-Sigma ADC

• 8-Bit MPU (80515), 1 Clock Cycle per Instruction

with Integrated ICE for MPU Debug

• RTC with Temperature Compensation

• Auto-Calibration

• Hardware watchdog Timer, Power-Fail Monitor

• LCD Driver (Up to 152 Pixels)

• Up to 18 General-Purpose I/O Pins

• 32 kHz Time Base

• 32 KB Flash with Security

• 2 KB MPU XRAM

• Two UARTs

• Digital I/O Pins Compatible with 5 V Inputs

• 64-Pin LQFP or 68-Pin QFN Package

• RoHS-Compliant (6/6) Lead(Pb)-Free Packages

• Complete Application Firmware Available

Rev 2

1

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