MSP430F67641A Datasheet, PDF (1/147 Pages) Texas Instruments – Polyphase Metering SoCs

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MSP430F67641A, MSP430F67621A
SLASE50 – FEBRUARY 2015
MSP430F676x1A Polyphase Metering SoCs
1 Device Overview
1.1 Features
1
• Accuracy <0.5% Over 2000:1 Dynamic Range for
Phase Current
• Meets or Exceeds ANSI C12.20 and IEC 63053
Standards
• Support for Multiple Sensors Such as Current
Transformers, Rogowski Coils, or Shunts
• Power Measurement for up to Three Phases
• Four-Quadrant Measurement per Phase or
Cumulative
• Exact Phase-Angle Measurements
• Digital Phase Correction for Current Transformers
• 40-Hz to 70-Hz Line Frequency Range Using
Single Calibration
• Flexible Power Supply Options With Automatic
Switching
• Display Operates at Very Low Power During AC
Mains Failure: 3 µA in LPM3
• Real-Time Clock (RTC) Module Operating from
Dedicated Power Supply (AUXVCC3) Offering
Integrated Offset and Temperature Calibration
Features.
• Multiple Communication Interfaces for Smart Meter
Implementations
• High-Performance 25-MHz CPU With 32-Bit
Multiplier
• Up to 128KB of Flash With Single-Cycle Execution
• Up to 8KB of RAM With Single-Cycle Access
• Up to Three Independent 24-Bit Sigma-Delta
Analog-to-Digital Converters (ADCs) With
Differential Inputs and Variable Gain
• System ADC:
10-Bit, 200-ksps, Six Channels Plus Temperature
Sensor and Supply Measurement
• Wide Input Supply-Voltage Range:
1.8 V to 3.6 V
• Ultra-Low Power Consumption During Energy
Measurement
– 3.0 mW at 10-MHz Operation (3.0 V)
• Multiple Low-Power Modes
– Standby Mode (LPM3): 2.5 µA at 3 V, Wakeup
in 3 µs (Typical)
– RTC Mode (LPM3.5): 1.24 µA at 3 V (Typical)
– Shutdown Mode (LPM4.5): 0.78 µA at 3 V
(Typical)
• LCD Driver With Contrast Control for up to 320
Segments
• Password-Protected RTC With Crystal Offset
Calibration and Temperature Compensation
• Four Communications Ports
– Configurable Among Four UART, Three SPI,
and One I²C Interfaces
• Four 16-Bit Timers With Nine Capture/Compare
Registers
• 100-Pin LQFP (PZ) Package With 72 I/O Pins
• 80-Pin LQFP (PN) Package With 52 I/O Pins
• Industrial Temperature Range of –40°C to 85°C
1.2 Applications
• Three-Phase Electronic Watt-Hour Meters
• Utility Metering
• Energy Monitoring
1.3 Description
The Texas Instruments MSP430F676x1A polyphase metering SoCs are powerful highly integrated
solutions for revenue meters that offer accuracy and low system cost with few external components. The
F676x1A uses the low-power MSP430™ CPU with a 32-bit multiplier to perform all energy calculations,
metering applications such as tariff rate management, and communications with AMR or AMI modules.
The F676x1A features TI's 24-bit sigma-delta converter technology, which provides better than 0.5%
accuracy. Family members include up to 128KB of flash and 8KB of RAM and an LCD controller with
support for up to 320 segments. The ultra-low-power nature of the F676x1A means that the system power
supply can be minimized to reduce overall cost. Lowest standby power means that backup energy storage
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.