The Texas Instruments MSP430FR6047 family of ultrasonic sensing and measurement SoCs
are powerful, highly integrated microcontrollers (MCUs) that are optimized for water and heat
meters. These MCUs offer an integrated Ultrasonic Sensing Solution (USS) module, which provides
high accuracy for a wide range of flow rates. The ultrasonic sensing module helps achieve
ultra-low-power metering combined with lower system cost due to maximum integration requiring very
few external components. MSP430FR6047 MCUs implements a high-speed ADC-based signal acquisition
followed by optimized digital signal processing using the integrated Low-Energy Accelerator (LEA)
module to deliver a high-accuracy metering solution with ultra-low power optimum for
battery-powered metering applications.
The ultrasonic sensing module includes a programmable pulse generator (PPG) and a
physical interface (PHY) with a low-impedance output driver for optimum sensor excitation and
accurate impendence matching to deliver best results for zero-flow drift (ZFD). The module also
includes a programmable gain amplifier (PGA) and a high-speed 12-bit 8-MSPS sigma-delta ADC (SDHS)
for accurate signal acquisition from industry-standard ultrasonic transducers.
Additionally, MSP430FR6047 MCUs integrate other peripherals to improve system
integration for metering. The devices have a metering test interface (MTIF) module to implement
pulse generation to indicate flow measured by the meter. The MSP430FR6047 MCUs also have an on-chip
8-mux LCD driver, RTC, 12-bit SAR ADC, analog comparator, advanced encryption (AES256), and cyclic
redundancy check (CRC) modules.
MSP430FR6047 MCUs are supported by an extensive hardware and software ecosystem with
reference designs and code examples to get your design started quickly. Development kits for the
MSP430FR6047 include the MSP-TS430PZ100E
100-pin target development board and EVM430-FR6047 ultrasonic water flow meter EVM.
TI also provides free software including the ultrasonic sensing design center, ultrasonic sensing
software library and MSP430Ware
TIs MSP430 ultra-low-power (ULP) FRAM microcontroller platform combines uniquely
embedded FRAM and a holistic ultra-low-power system architecture, allowing system designers to
increase performance while lowering energy consumption. FRAM technology combines the low-energy
fast writes, flexibility, and endurance of RAM with the nonvolatility of Flash.
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