Texas Instruments MSP430FR604x/MSP430FR603x SoCs

Texas Instruments MSP430FR604x/MSP430FR603x Ultrasonic Sensing and Measurement SoCs are powerful, highly integrated microcontrollers (MCUs) that are optimized for water and heat meters. The MSP430FR604x MCUs offer an integrated Ultrasonic Sensing Solution (USS) module, which provides high accuracy for a wide range of flow rates. The USS module helps achieve ultra-low-power metering combined with lower system cost due to maximum integration requiring very few external components. MSP430FR604x and MSP430FR603x MCUs implement 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 USS 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 the 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, MSP430FR604x and MSP430FR603x 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 Texas Instruments MSP430FR604x and MSP430FR603x MCUs also have an on-chip 8-mux LCD driver, an RTC, a 12-bit SAR ADC, an analog comparator, an advanced encryption accelerator (AES256), and a cyclic redundancy check (CRC) module.

Features

Best-in-class ultrasonic water-flow measurement with ultra-low power consumption
- < 25ps Differential Time-of-Flight (dTOF) accuracy
- High-precision time measurement resolution of < 5ps
- Ability to detect low flow rates (<1 liter per hour)
- Approximately 3µA overall current consumption with one measurement per second
Compliant with and exceeds ISO 4064, OIML R49, and EN 1434 accuracy standards
Ability to directly interface standard ultrasonic sensors (up to 2.5MHz)
Integrated analog front end – Ultrasonic Sensing Solution (USS)
Metering Test Interface (MTIF) pulse generator and pulse counter
Low-Energy Accelerator (LEA) operation independent of CPU
Embedded microcontroller
- 16-bit RISC architecture up to 16MHz clock
- 1.8V to 3.6V wide supply voltage range
Optimized ultra-low-power modes

Ferroelectric Random Access Memory (FRAM)
Intelligent digital peripherals
High-performance analog
Multifunction input/output ports
Code security and encryption
Enhanced serial communication
Flexible clock system
Development tools and software
- An ultrasonic sensing design center graphical user interface
- An ultrasonic sensing software library
- EVM430-FR6047 water meter evaluation module board
- MSP-TS430PZ100E target socket board for 100-pin package
- Free professional development environments with EnergyTrace++ technology
- MSP430Ware™ for MSP430™ microcontrollers