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, I2C™, 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
8-bit MPU (80515), 1 clock cycle per instruction w/ integrated ICE
for MPU debug
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Exceeds IEC62053 / ANSI C12.20 standards
32KB Flash with security
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Voltage reference < 40ppm/°C
2KB MPU XRAM
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Supports up to 7 sensor inputs
Energy display on main power failure
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Low jitter Wh pulse test outputs (10kHz max)
22-bit delta-sigma ADC
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Pulse count for pulse outputs
RTC with temperature compensation
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Tamper detection - Neutral current with CT, Magnetic tamper input
Hardware watchdog timer, power fail monitor
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Line frequency count for RTC
LCD driver (up to 152 pixel)
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Digital temperature compensation
Up to 18 general purpose I/O pins
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Sag detection for phase A and B
32.768kHz time base
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Independent 32-bit compute engine
Two UARTs for IR and AMR
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Phase compensation ( 7ꢀ)
Digital I/O pins compatible with 5V inputs
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Battery backup for RTC and battery monitor
68-pin QFN lead free package
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Three battery modes w/ wake-up on push-button or timer:
Brownout mode (48uA), LCD mode (5.7uA) and Sleep mode (2.9uA)
Applications
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Low-end poly-phase meters, active power
measurement only, 0.5% accuracy