71M6533/H and 71M6534/H
Energy Meter IC
DATA SHEET
Simplifying System IntegrationTM
November 2009
FEATURES
GENERAL DESCRIPTION
The 71M6533 and 71M6534 are Teridian’s 3rd-generation poly-
phase metering SOCs with a 10MHz 8051-compatible MPU
core, low-power RTC, FLASH and LCD driver. Teridian’s pa-
tented Single Converter Technology® with a 22-bit delta-sigma
ADC, seven analog inputs, digital temperature compensation,
precision voltage reference and a 32-bit computation engine
(CE) supports a wide range of metering applications with very
few external components.
• Accuracy < 0.1% over 2000:1 range
• Exceeds IEC62053 / ANSI C12.20 standards
• Seven sensor inputs with neutral current
measurement
• Low-jitter Wh and VARh plus two additional
pulse test outputs (4 total, 10 kHz maximum)
with pulse count
• Four-quadrant metering
• Phase sequencing
The 71M6533 and 71M6534 add several new features to Teri-
dian’s flagship 71M6513 poly-phase meters including an SPI in-
terface, advanced power management with <1 µA sleep cur-
rent, 4 KB shared RAM and 128 KB (71M6533/H, 71M6534) or
256 KB (71M6534H) Flash which may be programmed in the
field with new code and/or data during meter operation. Higher
processing and sampling rates and larger memory offer a po-
werful metering platform for commercial and industrial meters
with up to class 0.2 accuracy.
• Line frequency count for RTC
• Digital temperature compensation
• Independent 32-bit compute engine
• 46-64 Hz line frequency range with same
calibration. Phase compensation (± 7°)
• Three battery back-up modes with wake-up
on timer or push-button:
Brownout mode (82 µA typ., 71M6533)
LCD mode (21 µA typ., DAC active)
Sleep mode (0.7 µA typ.)
A complete array of ICE and development tools, programming
libraries and reference designs enable rapid development and
certification of meters that meet all ANSI & IEC electricity meter-
ing standards worldwide.
• Energy display during mains power failure
• 39 mW typical consumption @ 3.3 V, MPU
clock frequency 614 kHz
• 8-bit MPU (80515), 1 clock cycle per in-
struction, 10 MHz maximum, with integrated
ICE for debug
CT/COIL
LIVE
• LCD driver with 4 common segment drivers:
Up to 228 (71M6533) or 300 (71M6534)
pixels
NEUT
LOAD
LIVE
LIVE
• 4 dedicated plus 35 (71M6533) or
48 (71M6534) multi-function DIO pins
• RTC for TOU functions with clock-rate adjust
register
POWER SUPPLY
NEUTRAL
• Hardware watchdog timer, power fail monitor
• I2C/Microwire EEPROM Interface
• High-speed slave SPI interface to data RAM
• Two UARTs for IR and AMR, IR driver with
modulation
CONVERTER
V3P3A V3P3SYS
GNDA GNDD
IA
PWR MODE
CONTROL
VA
TERIDIAN
71M6533
71M6534
WAKE-up
IB
REGULATOR
VB
IC
VBAT
V2P5
BATTERY
• Flash memory with security and in-system
program update:
VC
ID
TEMP
SENSOR
LCD DRIVER
DIO ,PULSE
128 KB (71M6533/H, 71M6534)
256 KB (71M6534H)
VREF
RAM
COM0..3
SEG
SERIAL PORTS
8888.8888
COMPUTE
ENGINE
TX
RX
SEG/DIO
• 4 KB RAM
AMR
IR
• Industrial temperature range
• 100-pin (71M6533/H) or 120-pin
(71M6534/H) lead free LQFP package
PULSES,
DIO
FLASH
DIO
RX
MOD
TX
I2C or µWire
EEPROM
COMPARATOR
MPU
RTC
TIMERS
OSC/PLL
POWER
FAULT
V1
XIN
32kHz
V2*
ICE
XOUT
* 71M6534 only
9/24/2008
v1.1
© 2007-2009 TERIDIAN Semiconductor Corporation
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