Texas Instruments new low-power MCU for smart flow meters


US electronics giant Texas Instruments has launched a new range of low power micro-controllers, aimed at the development of smart flow metering designs for water gas and heat.

Texas Instrument’s (TI) MSP430FR69x MCUs are scalable up to 128 KB non-volatile FRAM memory and include smart analogue integration, such as an extended scan interface and a differential input analog-to-digital converter (ADC) that consumes 140 uA at 200 KSPS.

Developers can also leverage the integrated 320-segment LCD controller to add a display to their products and a 256-bit advanced encryption standard (AES) hardware accelerator to increase security of data transmissions. This integration not only reduces overall power consumption, it minimizes product size by eliminating redundant components in systems.

TI’s focus on optimizing its MSP430FR69x MCUs for ultra-low-power and high integration yields MCUs with the lowest active, standby and peripheral power in the industry.

Connecting to smart grid

For integration flow meters fitted with the new MCUs to the grid, TI has several connectivity solutions including SimpleLink Sub-1 GHz CC1120 transceiver, SimpleLink Wi-Fi CC3100 wireless network processor or Wireless M-Bus.

TI’s new FlowESI GUI also eases sensor setup in software and EnergyTrace++ technology enables developers to debug power consumption at a function- and peripheral-level to help developers optimize their metering designs and speed time-to-market.

Get flow metering designs started quicker with three comprehensive TI Designs based on MSP430FR69x MCUs that leverage the integrated extended scan interface module. These complete reference designs for water meters using inductive-capacitive (LC), giant magneto-resistive (GMR) or optical sensors include complete block diagrams, user guides, bill of materials (BOM), design files and test reports.

MSP430FR69x MCUs are available in production quantities for US$4.50 in 1K units. Start designing with the design kit MSP-FET430U100D for US$175 on TI’s eStore or from authorized distributors. The EVM430-FR6989 flow meter evaluation kit will be available in October for US$300.