• Best-in-class ultrasonic water-flow measurement with ultra-low power consumption
  • <100-ps differential time-of-flight (dTOF) accuracy
  • High-precision time measurement resolution of 20ps
  • Ability to detect low flow rates (4-6 liters per hour)
  • Approximately 4-μA current consumption with onemeasurement per second
• Compliant to and exceeds ISO 4064, OIML R49, and EN 1434 accuracy standards
• Ability to directly interface standard ultrasonic sensors (up to 2.5 MHz)
• Integrated analog front end – ultrasonic sensing solution (USS)
  • Programmable pulse generation (PPG) to generate pulses at different frequencies
  • Integrated physical interface (PHY) with low-impedance (4-Ω) output driver to control input and output channels
  • High-performance high-speed 12-bit sigma-delta ADC (SDHS) with output data rates up to 8Msps
  • Programmable gain amplifier (PGA) with –6.5dB to 30.8dB
  • High-performance phase-locked loop (PLL) with output range of 68MHz to 80MHz
• Low-energy accelerator (LEA)
  • Operation independent of CPU
  • 4KB of RAM shared with CPU
  • Efficient 256-point complex FFT: Up to 40× faster than Arm Cortex-M0+ core
• Embedded microcontroller
  • 16-bit RISC architecture up to 16?MHz clock
  • Wide supply voltage range from 3.6V down to 1.8V (minimum supply voltage is restricted by SVS levels, see the SVS specifications)
• Optimized ultra-low-power modes
  • Active mode: approximately 120 μA/MHz
  • Standby mode with real-time clock (RTC) (LPM3.5): 450 nA ⁽¹⁾
  • Shutdown (LPM4.5): 30 nA
• Ferroelectric random access memory (FRAM)
  • Up to 256KB of nonvolatile memory
  • Ultra-low-power writes
  • Fast write at 125 ns per word (64KB in 4ms)
  • Unified memory = program + data + storage in one space
  • 10¹⁵ write cycle endurance
  • Radiation resistant and nonmagnetic
• Intelligent digital peripherals
  • 32-bit hardware multiplier (MPY)
  • 6-channel internal DMA
  • RTC with calendar and alarm functions
  • Six 16-bit timers with up to seven capture/compare registers each
  • 32-bit and 16-bit cyclic redundancy check (CRC)
• High-performance analog
  • 16-channel analog comparator
  • 12-bit SAR ADC featuring window comparator, internal reference, and sample-and-hold, up to 16 external input channels
  • Integrated LCD driver with contrast control for up to 264 segments
• Multifunction input/output ports
  • Accessible bit-, byte-, and word-wise (in pairs)
  • Edge-selectable wake from LPM on all ports
  • Programmable pullup and pulldown on all ports
• Code security and encryption
  • 128- or 256-bit AES security encryption and decryption coprocessor
  • Random number seed for random number generation algorithms
  • IP encapsulation protects memory from external access
  • FRAM provides inherent security advantages
• Enhanced serial communication
  • Up to four eUSCI_A serial communication ports
    • UART with automatic baud-rate detection
    • IrDA encode and decode
  • Up to two eUSCI_B serial communication ports
    • I²C with multiple-slave addressing
  • Hardware UART or I²C bootloader (BSL)
• Flexible clock system
  • Fixed-frequency DCO with 10 selectable factory-trimmed frequencies
  • Low-power low-frequency internal clock source (VLO)
  • 32-kHz crystals (LFXT)
  • High-frequency crystals (HFXT)
• Development tools and software (also see Tools and Software)
  • Ultrasonic Sensing Design Center graphical user interface
  • Ultrasonic sensing software library
  • EVM430-FR6047 water meter evaluation module
  • MSP-TS430PZ100E target socket board for 100-pin package
  • Free professional development environments with EnergyTrace++ technology
  • MSP430Ware? for MSP430? microcontrollers
• Device Comparison summarizes the available device variants and package options

⁽¹⁾The RTC is clocked by a 3.7-pF crystal.