MSP430FR5994IPNR

Product Overview

The MSP430FR5994IPNR from Texas Instruments is a 16-bit ultra-low-power MSP430 microcontroller featuring a 16 MHz RISC CPU, 256KB of nonvolatile FRAM, 8KB SRAM, a 12-bit SAR ADC, Low-Energy Accelerator (LEA), AES encryption hardware, DMA, multiple timers, RTC, and flexible UART, SPI, and I²C communication interfaces.

The MSP430FR5994 is designed for applications requiring low power consumption, high-endurance nonvolatile memory, and efficient digital signal processing. Its integrated LEA accelerator operates independently of the CPU and is optimized for DSP operations such as FFT, FIR filtering, and matrix multiplication.

Key Features

• 16-bit MSP430 RISC architecture

• CPU frequency up to 16 MHz

• 256KB nonvolatile FRAM

• 8KB SRAM

• Integrated Low-Energy Accelerator (LEA)

• 4KB LEA RAM shared with CPU

• 12-bit SAR ADC

• Up to 20 external ADC input channels

• 16-channel analog comparator

• 6-channel internal DMA

• 32-bit hardware multiplier

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

• Real-time clock with calendar and alarm functions

• 128-bit and 256-bit AES encryption/decryption accelerator

• Up to four eUSCI_A serial communication interfaces

• Up to four eUSCI_B serial communication interfaces

• UART with automatic baud-rate detection

• IrDA encode/decode

• I²C with multiple-slave addressing

• Hardware UART or I²C bootloader

• 32-bit and 16-bit CRC

• Capacitive-touch capability on GPIOs

• Flexible clock system

• 1.8V to 3.6V supply voltage

• Ultra-low-power operating modes

• 68 GPIOs

• 80-pin LQFP package

• -40°C to +85°C operating temperature range

Technical Specifications

The exact MSP430FR5994IPNR ordering option is an 80-pin LQFP with PN package code, specified for -40°C to +85°C operation and supplied in quantities of 1,000 per Large Tape & Reel.

Processor & Architecture

The MSP430FR5994IPNR uses Texas Instruments' 16-bit MSP430 RISC architecture with a maximum operating frequency of 16 MHz.

A key feature is the integrated Low-Energy Accelerator (LEA). The LEA operates independently of the CPU and is optimized for computationally intensive signal-processing operations including FFT, FIR filtering, and matrix multiplication.

TI specifies that the LEA can provide up to 40× the performance of an Arm Cortex-M0+ core for certain DSP operations, helping reduce CPU workload and energy consumption.

Memory & Storage

The MSP430FR5994IPNR integrates:

• 256KB nonvolatile FRAM

• 8KB SRAM

• 4KB RAM shared with the LEA accelerator

• Unified memory architecture

• Flexible allocation of application code and data

• Fast FRAM writes at approximately 125 ns per word

• FRAM endurance up to 10¹⁵ write cycles

FRAM combines nonvolatile data retention with fast, low-energy write operation, making the MSP430FR5994 suitable for applications that frequently update measurement and operating data.

Analog Peripherals

The MSP430FR5994IPNR provides integrated analog peripherals including:

• 12-bit SAR ADC

• Up to 20 external ADC input channels

• Internal voltage reference

• Sample-and-hold circuitry

• Window comparator functionality

• 16-channel analog comparator

These analog resources allow the MCU to interface directly with sensors and monitoring circuits in industrial, portable, energy-management, and measurement applications.

Timer & PWM Resources

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

Timer resources support:

• PWM generation

• Input capture

• Output compare

• Pulse-width measurement

• Event timing

• Period measurement

• Motor and actuator control

The integrated RTC provides calendar and alarm functions for long-term timekeeping and low-power scheduling.

Communication & Connectivity

The MSP430FR5994IPNR provides multiple enhanced serial communication interfaces.

The eUSCI_A modules support:

• UART

• Automatic baud-rate detection

• IrDA encode/decode

• Synchronous SPI

The eUSCI_B modules support:

• I²C

• Multiple-slave addressing

• Synchronous serial communication

The device supports up to four eUSCI_A and four eUSCI_B interfaces, providing extensive connectivity for sensors, displays, external memory, wireless modules, and other embedded controllers.

Clock & Power Management

The MSP430FR5994IPNR includes a flexible clock system with:

• Digitally controlled oscillator (DCO)

• Factory-trimmed DCO frequencies

• Very-low-power oscillator (VLO)

• 32-kHz crystal oscillator

• High-frequency crystal oscillator

• Flexible clock-source selection

The MCU operates from 1.8V to 3.6V and is optimized for low-energy embedded applications.

Low-Power Operation

The MSP430FR5994IPNR is designed for ultra-low-power operation.

Typical power characteristics include:

• Active mode: approximately 118 µA/MHz

• Standby with VLO (LPM3): approximately 500 nA

• Standby with RTC (LPM3.5): approximately 350 nA

• Shutdown (LPM4.5): approximately 45 nA

These operating modes allow the MCU to remain in low-power states for extended periods while retaining the ability to wake for sensing, timing, processing, or communication tasks.

Power Management

The MSP430FR5994IPNR incorporates a low-power system architecture designed to balance processing performance and energy consumption.

Power-management features include:

• Multiple low-power operating modes

• Low-power VLO operation

• RTC operation during low-power modes

• Fast wake-up capability

• Supply-voltage monitoring

• Flexible clock-source selection

• Low-energy peripheral operation

These features make the device suitable for battery-powered sensing, portable instrumentation, and energy-monitoring equipment.

Security & Data Integrity

Security and data-integrity features include:

• AES-128 encryption/decryption accelerator

• AES-256 encryption/decryption accelerator

• Random-number seed support

• IP encapsulation for memory protection

• Secure debug support

• 32-bit CRC

• 16-bit CRC

The hardware cryptographic accelerator reduces CPU workload during encryption and decryption operations and supports secure embedded communications.

Development & Debugging

The MSP430FR5994IPNR is supported by the Texas Instruments MSP430 development ecosystem, including:

• MSP-EXP430FR5994 LaunchPad development kit

• MSP-TS430PN80B target socket development board

• MSP430Ware software

• Code Composer Studio

• EnergyTrace and EnergyTrace++ development tools

• MSP430 software libraries

• TI code examples and reference designs

The LEA accelerator is supported by optimized DSP libraries for efficient implementation of signal-processing algorithms.

Applications

Typical applications include:

• Portable measurement equipment

• Sensor processing

• Industrial sensing

• Energy monitoring

• Smart meters

• Battery-powered instrumentation

• Data acquisition systems

• Digital signal processing

• Portable medical equipment

• Building automation

• Industrial control

• Wireless sensor systems

• Environmental monitoring

• Embedded measurement systems

The combination of large FRAM capacity, LEA DSP acceleration, low-power operation, ADC, communication interfaces, and security hardware makes the MSP430FR5994 suitable for advanced low-power embedded designs.

Benefits

• 16-MHz 16-bit MSP430 RISC CPU

• 256KB FRAM provides substantial nonvolatile storage

• Extremely high FRAM write endurance

• Integrated LEA accelerator reduces DSP processing load

• Efficient FFT, FIR, and matrix-processing capability

• 8KB SRAM supports application data and buffers

• Integrated 12-bit ADC simplifies sensor interfaces

• Up to 20 external ADC channels

• Multiple UART, SPI, and I²C interfaces

• Six 16-bit timers provide flexible timing and PWM

• Integrated AES hardware improves security performance

• Six-channel DMA reduces CPU overhead

• Ultra-low-power standby and shutdown modes

• 68 GPIOs provide extensive system connectivity

• 80-pin LQFP package provides high peripheral integration

Packaging & Ordering Information

• Part Number: MSP430FR5994IPNR

• Manufacturer: Texas Instruments

• Device Family: MSP430FR5994

• 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

TI's exact-part and carrier information confirms the PN package, 80-pin LQFP configuration, and 1,000-unit Large Tape & Reel packaging.

Datasheet

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

Datasheet: Official MSP430FR5994 Datasheet

Frequently Asked Questions

What is the MSP430FR5994IPNR?
The MSP430FR5994IPNR is a 16-MHz Texas Instruments 16-bit MSP430 microcontroller with 256KB FRAM, 8KB SRAM, LEA DSP acceleration, 12-bit ADC, DMA, AES security, timers, RTC, UART, SPI, and I²C interfaces.

What is the maximum CPU frequency?
The MSP430FR5994IPNR operates at up to 16 MHz.

How much memory does it have?
The device integrates 256KB of nonvolatile FRAM and 8KB of SRAM.

What is the LEA accelerator?
LEA is a dedicated Low-Energy Accelerator for digital signal processing. It operates independently of the CPU and is optimized for FFT, FIR filtering, and matrix multiplication.

Does it have an ADC?
Yes. The MSP430FR5994 includes a 12-bit SAR ADC with up to 20 external input channels.

How many GPIOs are available?
The MSP430FR5994 provides 68 GPIOs.

What package is used?
The MSP430FR5994IPNR uses an 80-pin LQFP package with the PN package code.

What is the operating temperature range?
The specified operating temperature range is -40°C to +85°C.

What is the difference between MSP430FR5994IPMR and MSP430FR5994IPNR?
Both use the same MSP430FR5994 device. The IPMR is the 64-pin LQFP PM package, while the IPNR is the 80-pin LQFP PN package. Both are available in 1,000-unit Large Tape & Reel configurations.

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