MSP430FR6043IPNR

Product Overview

The MSP430FR6043IPNR from Texas Instruments is a 16-bit ultra-low-power MSP430 microcontroller designed specifically for high-precision ultrasonic sensing and metering applications. It integrates 64KB of FRAM, 12KB of RAM, a high-speed 12-bit 8-MSPS sigma-delta ADC, ultrasonic sensing analog front end, low-energy accelerator (LEA), LCD driver, advanced timers, communication interfaces, and security features.

The integrated Ultrasonic Sensing Solution (USS_A) provides a programmable pulse generator, low-impedance ultrasonic PHY, programmable gain amplifier, and high-speed ADC for accurate ultrasonic time-of-flight measurements. The device is particularly suited for smart water meters, gas meters, flow measurement, liquid-level sensing, and other battery-powered industrial sensing systems.

Key Features

• 16-bit MSP430 RISC architecture

• CPU frequency up to 16 MHz

• 64KB nonvolatile FRAM

• 12KB RAM

• Integrated Low-Energy Accelerator (LEA)

• High-speed 12-bit sigma-delta ADC up to 8 MSPS

• Integrated ultrasonic sensing analog front end (USS_A)

• Programmable pulse generator (PPG)

• Integrated ultrasonic PHY with 4Ω output driver

• Programmable gain amplifier from -6.5dB to 30.8dB

• High-performance PLL with 68MHz to 80MHz output range

• 12-bit SAR ADC with up to 8 external channels

• 12-channel analog comparator

• Integrated LCD driver supporting up to 248 segments

• 6-channel DMA

• 32-bit hardware multiplier

• Six 16-bit timers with up to seven capture/compare registers each

• Metering Test Interface (MTIF)

• Real-time clock with calendar and alarm

• AES-128/AES-256 encryption accelerator

• Up to four eUSCI_A serial communication interfaces

• Up to two eUSCI_B interfaces

• Wide 1.8V to 3.6V supply voltage

• Ultra-low-power operating modes

• 80-pin LQFP package

• Operating temperature range: -40°C to +85°C

Technical Specifications

The exact MSP430FR6043IPNR ordering option is specified by TI as an 80-pin LQFP device with -40°C to +85°C operating temperature and 1,000 units per large tape-and-reel carrier.

Processor & Architecture

The MSP430FR6043IPNR uses Texas Instruments' 16-bit MSP430 RISC architecture with a maximum CPU frequency of 16 MHz. Its architecture is optimized for ultra-low-power embedded applications while providing dedicated hardware for ultrasonic sensing and digital signal processing.

The integrated LEA accelerator operates independently of the CPU and provides efficient signal-processing capabilities, including 256-point complex FFT processing. This enables high-performance ultrasonic signal analysis while reducing CPU workload and system power consumption.

Memory & Storage

The device integrates:

• 64KB nonvolatile FRAM

• 12KB RAM

• 8KB RAM shared with the LEA accelerator

• Unified memory architecture for program and data storage

• FRAM write speed of approximately 125ns per word

• FRAM endurance of up to 10¹⁵ write cycles

FRAM combines nonvolatile data retention with fast, low-energy write operation, making it well suited for metering applications that frequently update measurement data.

Analog Peripherals

The MSP430FR6043IPNR provides a comprehensive analog subsystem for precision sensing:

• High-speed 12-bit sigma-delta ADC

• ADC data rate up to 8 MSPS

• Up to 8 external SAR ADC input channels

• 12-bit SAR ADC

• Programmable gain amplifier

• 12-channel analog comparator

• Internal ADC reference

• Sample-and-hold circuitry

• Integrated ultrasonic sensing analog front end

• Programmable pulse generator

• Integrated low-impedance ultrasonic driver

The USS_A analog front end is designed to directly interface with standard ultrasonic sensors operating at frequencies up to 2.5 MHz.

Timer & PWM Resources

The device integrates six 16-bit timers with up to seven capture/compare registers each.

Additional timing resources include:

• Metering Test Interface (MTIF)

• Pulse generator

• Pulse counter

• Real-time clock

• Calendar and alarm functions

• Capture/compare functions

• Low-power timing operation

The MTIF supports pulse rates of up to 1,024 pulses per second and a 16-bit count capacity of up to 65,535.

Communication & Connectivity

The MSP430FR6043IPNR provides flexible serial communication resources:

• Up to 4 × eUSCI_A

• UART with automatic baud-rate detection

• IrDA encode/decode

• Synchronous SPI

• Up to 2 × eUSCI_B

• I²C with multiple-slave addressing

• Hardware UART or I²C bootloader

• Multiple GPIO interfaces

• Capacitive-touch capability on GPIO pins

These interfaces allow the MCU to communicate with sensors, displays, external controllers, memory devices, and metering system components.

Clock & Power Management

The MSP430FR6043IPNR includes a flexible clock system featuring:

• Factory-trimmed digitally controlled oscillator (DCO)

• Low-frequency VLO oscillator

• 32-kHz low-frequency crystal oscillator

• High-frequency crystal oscillator

• High-performance PLL

• USS_A PLL output range of 68MHz to 80MHz

The device supports a 1.8V to 3.6V supply range and is optimized for battery-powered applications.

Low-Power Operation

The MSP430FR6043IPNR is optimized for ultra-low-power sensing applications.

Typical power characteristics include:

• Active mode: approximately 120 µA/MHz

• LPM3.5 standby with RTC: approximately 450 nA

• LPM4.5 shutdown: approximately 30 nA

• MTIF operation in LPM3.5: approximately 200 nA

The device can therefore perform periodic ultrasonic measurements while maintaining extremely low average system power consumption.

Power Management

The device incorporates multiple low-power operating modes to minimize energy consumption in battery-operated systems.

Its low-power architecture allows the CPU, peripherals, RTC, and sensing subsystem to operate selectively depending on the measurement requirements. This makes the MSP430FR6043 particularly suitable for smart meters that may need to operate for extended periods from a battery.

Security & Data Integrity

Security features include:

• AES-128 encryption/decryption accelerator

• AES-256 encryption/decryption accelerator

• Random-number seed support

• IP encapsulation

• Secure memory access protection

• Secure debug capabilities

• FRAM security advantages

• 16-bit and 32-bit CRC hardware

These features help protect firmware, measurement data, and communications in connected metering applications.

Development & Debugging

The MSP430FR6043IPNR is supported by the Texas Instruments MSP430 development ecosystem, including:

• Ultrasonic Sensing Design Center

• Ultrasonic Sensing Software Library

• MSP430Ware

• EnergyTrace++ technology

• EVM430-FR6043 ultrasonic gas-flow-meter evaluation module

• MSP-TS430PN80C target socket development board

• TI development software and code examples

These tools simplify development of ultrasonic sensing and metering applications.

Applications

Typical applications include:

• Smart water meters

• Smart gas meters

• Ultrasonic flow meters

• Water-flow measurement

• Gas-flow measurement

• Liquid-level sensing

• Ultrasonic leak detection

• Ultrasonic surface sensing

• Liquid concentration sensing

• Anemometers

• Oxygen concentration sensing

• Industrial metering systems

• Battery-powered sensing equipment

The device is specifically optimized for high-precision ultrasonic water and gas flow measurement.

Benefits

• Integrated ultrasonic sensing solution reduces external component count

• High-speed ADC enables accurate ultrasonic signal acquisition

• LEA accelerator enables efficient digital signal processing

• 64KB FRAM provides high endurance for frequently updated data

• Ultra-low-power modes extend battery operating life

• Integrated LCD driver simplifies meter display design

• Integrated security hardware improves data and firmware protection

• Multiple UART, SPI, and I²C interfaces provide flexible system connectivity

• Dedicated metering hardware simplifies flow-meter system development

• Suitable for high-accuracy water and gas metering applications

Packaging & Ordering Information

• Part Number: MSP430FR6043IPNR

• Manufacturer: Texas Instruments

• Device Family: MSP430FR6043

• Package: 80-pin LQFP

• Package Code: PN

• Package Quantity: 1,000 per Large Tape & Reel

• Supply Voltage: 1.8V to 3.6V

• Operating Temperature: -40°C to +85°C

• Product Status: ACTIVE

The exact-part TI listing confirms the PN package, 80 pins, -40°C to +85°C operating range, and 1,000-unit large tape-and-reel packaging.

Datasheet

For complete electrical characteristics, pin configuration, memory architecture, ADC specifications, ultrasonic sensing AFE configuration, timer configuration, communication interfaces, absolute maximum ratings, and application information, please refer to the official Texas Instruments documentation.

Datasheet: Official MSP430FR6043 Datasheet

Frequently Asked Questions

What is the MSP430FR6043IPNR?
The MSP430FR6043IPNR is a 16-bit Texas Instruments MSP430 ultra-low-power MCU with 64KB FRAM, 12KB RAM, an integrated ultrasonic sensing analog front end, high-speed ADC, LEA accelerator, LCD driver, and metering peripherals.

What is the maximum CPU frequency?
The MSP430FR6043IPNR operates at up to 16 MHz.

How much memory does it have?
It integrates 64KB of nonvolatile FRAM and 12KB of RAM.

Does it support ultrasonic sensing?
Yes. It includes the integrated USS_A ultrasonic sensing solution with a programmable pulse generator, ultrasonic PHY, PGA, PLL, and high-speed 12-bit ADC.

What package is used?
The MSP430FR6043IPNR is supplied in an 80-pin LQFP package with the PN package code.

What applications is it designed for?
It is optimized for ultrasonic water and gas metering, flow measurement, liquid-level sensing, leak detection, and other precision ultrasonic sensing applications.

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