71M6523 Product Brief
For Low-end Polyphase Meters, 0.5% Accuracy
Description
The Teridian 71M6523 is a highly integrated SOC with an MPU core, RTC, FLASH and LCD driver. Teridian’s patented Single Converter Technology
®
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 metering applications with very few low-cost external components. A 32kHz crystal time base for the entire system and internal battery backup support for
RAM and RTC further reduce system cost. The IC supports poly-phase metering applications along with tamper-detection mechanisms.
Maximum design flexibility is provided by multiple UARTs, I
2
C™, μWire
™
, up to 18 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 TOU, AMR and Prepay meters
that comply with worldwide electricity metering standards.
KEY FEATURES
KEY FEATURES
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< 0.5% Wh accuracy over 1000:1 current range and over temperature
Exceeds IEC62053 / ANSI C12.20 standards
Voltage reference < 40ppm/°C
Supports up to 7 sensor inputs
Low jitter Wh pulse test outputs (10kHz max)
Pulse count for pulse outputs
Tamper detection - Neutral current with CT, Magnetic tamper input
Line frequency count for RTC
Digital temperature compensation
Sag detection for phase A and B
Independent 32-bit compute engine
Phase compensation (±7º)
Battery backup for RTC and battery monitor
Three battery modes w/ wake-up on push-button or timer:
Brownout mode (48uA), LCD mode (5.7uA) and Sleep mode (2.9uA)
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8-bit MPU (80515), 1 clock cycle per instruction w/ integrated ICE
for MPU debug
32KB Flash with security
2KB MPU XRAM
Energy display on main power failure
22-bit delta-sigma ADC
RTC with temperature compensation
Hardware watchdog timer, power fail monitor
LCD driver (up to 152 pixel)
Up to 18 general purpose I/O pins
32.768kHz time base
Two UARTs for IR and AMR
Digital I/O pins compatible with 5V inputs
68-pin QFN lead free package
Applications
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Low-end poly-phase meters, active power
measurement only, 0.5% accuracy
71M6523 Product Brief
Block Diagram
A
LIVE
NEUT
B
C
LIVE
LIVE
POWER SUPPLY
CT/COIL
LIVE
LOAD
VCC VEE GND
X0
X1
Y0
Y1
Z0
Z1
A
B
C
4053
MUX
X
CONVERTER
ADC0-IN
ADC1-IN
V3.3A V3.3 GNDA GNDD
SYS
PWR MODE
CONTROL
WAKE-UP
Y
ADC2-IN
INEU
71M6523
TEMP
SENSOR
RAM
FLASH/
ROM
COMPUTE
ENGINE
Z
VOLTAGE REF
VREF
VBIAS
SERIAL PORTS
AMR
TX
RX
RX/DI01
IR
TX/DI02
REGULATOR
VBAT
V2.5
DIO, PULSE
SEG0..18
COM0..3
SEG0..18
SEG 24..31/
DIO 4..11
SEG 34..37/
DIO 14..17
SEG 32,33,
38/ICE
+ –
BATTERY
3.3V LCD
SENSE
DRIVE/MOD
COMPARATOR
V1
OSC/PLL
XIN
XOUT
IIC OR uWire
EEPROM
POWER
FAULT
MPU
RTC
TIMERS
TEST PULSE
V3P3D
GNDD
32 kHz
ICE_E
ICE
MC (DIO7)
Ordering Information
PART DESCRIPTION
71M6523
68-pin QFN, Lead Free, 32KB Flash
71M6523
68-pin QFN, Lead Free, 32KB Flash, Tape and Reel
ORDERING NUMBER
71M6523-IM/F
71M6523-IMR/F
For more information about Teridian products and the name of a local representative or distributor,
visit
www.teridian.com
or call +1 714-508-8800
6440 Oak Canyon, Ste 100, Irvine, CA 92618-5201
+1 714-508-8800 (Tel)
+1 714-508-8878 (Fax)
No responsibility is assumed by Teridian Semiconductor Corporation for use of this product nor for any infringements of patents and trademarks or
other rights of third parties resulting from its use. No license is granted under any patents, patent rights or trademarks of Teridian Semiconductor
Corporation, and the company reserves the right to make changes in specifications at any time without notice. Accordingly, the reader is cautioned
to verify that the data sheet is current before placing orders.
© 2009 Teridian Semiconductor Corporation
02/09 - Rev 1.0
Analog electronics
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