MSP430FR2355TRSMR

Product Overview

MSP430FR2355TRSMR is a 16-bit ultra-low-power mixed-signal microcontroller from Texas Instruments' MSP430FR2355 family. It features a 24 MHz MSP430 RISC CPU, 32KB FRAM, 4KB SRAM, a 12-bit SAR ADC, two enhanced comparators, four Smart Analog Combo (SAC-L3) modules, multiple timers, UART, SPI, and I2C interfaces. The device operates from 1.8V to 3.6V and supports an extended operating temperature range of -40°C to +105°C.

The MSP430FR2355 combines ultra-low-power FRAM technology with highly integrated analog signal-chain functions. Its four configurable Smart Analog Combo modules can be used as programmable-gain operational amplifiers or 12-bit DACs, helping reduce external components and PCB size in sensing and measurement applications.

Key Features

• 16-bit MSP430 RISC architecture

• Maximum CPU frequency up to 24 MHz

• 32KB program FRAM

• 512B data FRAM

• 4KB SRAM

• FRAM with ECC and configurable write protection

• 12-bit SAR ADC

• 12 ADC channels

• 200 ksps ADC sample rate

• Two enhanced comparators

• Integrated 6-bit DAC reference in comparators

• Four Smart Analog Combo (SAC-L3) modules

• Configurable operational amplifier functions

• Programmable-gain amplifier functions

• Integrated 12-bit DAC functions

• Three 16-bit Timer_B3 modules

• One 16-bit Timer_B7 module

• 16-bit counter-only RTC

• Two eUSCI_A modules supporting UART, IrDA, and SPI

• Two eUSCI_B modules supporting SPI and I2C

• 16-bit hardware CRC

• 32-bit hardware multiplier

• Manchester codec

• Interrupt compare controller

• 1.8V to 3.6V supply voltage

• -40°C to +105°C operating temperature

• 32-pin VQFN package

• Active product status

Technical Specifications

Processor & Architecture

The MSP430FR2355TRSMR integrates a 16-bit MSP430 RISC CPU with 16-bit registers and a constant generator designed to provide efficient code execution. The CPU supports operating frequencies up to 24 MHz.

The digitally controlled oscillator (DCO) and flexible clock system allow the MCU to quickly transition between low-power and active operation, supporting responsive embedded applications while maintaining low energy consumption.

Memory & Storage

The MSP430FR2355TRSMR provides 32KB of program FRAM, 512B of data FRAM, and 4KB of SRAM. FRAM provides nonvolatile storage with fast, low-energy writes and high endurance, making it suitable for frequent data logging and embedded data storage.

Key memory features include:

• 32KB nonvolatile FRAM

• 512B data FRAM

• 4KB SRAM

• Built-in ECC

• Configurable write protection

• Unified memory architecture

• Program, constant, and data storage

• Up to 10¹⁵ write-cycle endurance

• Nonvolatile data logging capability

Analog Peripherals

The MSP430FR2355TRSMR provides highly integrated analog peripherals designed for sensing, measurement, signal conditioning, and low-power instrumentation.

12-bit SAR ADC

• 12-bit resolution

• 12 analog input channels

• 200 ksps sample-and-hold

• Internal shared reference

• 1.5V, 2.0V, or 2.5V reference options

Enhanced Comparators

• Two integrated eCOMP modules

• Integrated 6-bit DAC reference

• Programmable hysteresis

• High-power and low-power operating modes

• One comparator with approximately 100-ns response time

• One low-power comparator with approximately 1-µs response time

Smart Analog Combo

The MSP430FR2355 includes four SAC-L3 modules. Each module can provide configurable analog signal-chain functions including:

• General-purpose operational amplifier

• Rail-to-rail input and output

• Programmable-gain amplifier

• Noninverting PGA gain settings

• Inverting PGA gain settings

• Integrated 12-bit reference DAC

• 12-bit voltage DAC mode

• Configurable high-power and low-power operation

Timer & PWM Resources

The device includes multiple 16-bit timer resources for PWM generation, timing, capture, compare, and event measurement.

• Three 16-bit Timer_B3 modules

• Three capture/compare registers per Timer_B3

• One 16-bit Timer_B7 module

• Seven capture/compare registers in Timer_B7

• One 16-bit counter-only RTC

These timer resources support PWM generation, timing control, event measurement, waveform generation, and embedded scheduling.

Communication & Connectivity

The MSP430FR2355TRSMR integrates multiple enhanced serial communication interfaces.

• 2 × eUSCI_A supporting UART, IrDA, and SPI

• 2 × eUSCI_B supporting SPI and I2C

• Flexible serial communication

• Multiple peripheral connection options

These interfaces allow the MCU to communicate with sensors, displays, memory devices, converters, communication modules, and other embedded controllers.

Clock & Power Management

The MSP430FR2355TRSMR includes a flexible clock system with multiple internal and external clock sources.

• 32-kHz REFO oscillator

• 24-MHz DCO with FLL

• ±1% accuracy with on-chip reference at room temperature

• 10-kHz VLO oscillator

• High-frequency MODOSC

• External 32-kHz crystal oscillator

• External high-frequency crystal oscillator up to 24 MHz

• Programmable MCLK prescaler from 1 to 128

• SMCLK derived from MCLK with selectable prescaler options

Low-Power Operation

The MSP430FR2355TRSMR is designed for ultra-low-power applications and provides multiple low-power operating modes.

Typical power specifications include:

• Active mode: 142 µA/MHz at 3V

• LPM3 with 32.768-kHz crystal: 1.43 µA with SVS enabled

• LPM3.5 with 32.768-kHz crystal: 620 nA with SVS enabled

• LPM4.5 shutdown: 42 nA with SVS disabled

• Fast wake-up from low-power modes

These low-power characteristics make the device suitable for battery-powered sensing, measurement, monitoring, and data-logging applications.

Power Management

The MSP430FR2355TRSMR operates from a 1.8V to 3.6V supply voltage range, supporting battery-powered and low-voltage embedded designs.

Its low-power operating modes allow designers to reduce energy consumption during standby and shutdown periods while maintaining the required wake-up and timing functionality.

Security & Data Integrity

The MSP430FR2355TRSMR provides features designed to improve memory reliability and embedded system data integrity.

• FRAM ECC

• Configurable FRAM write protection

• 16-bit CRC hardware

• Nonvolatile FRAM data storage

• Secure debug

• Watchdog timer

• Brownout protection

• Hardware multiplier

These features support reliable program execution, data storage, and embedded system operation.

Development & Debugging

The MSP430FR2355TRSMR is supported by the Texas Instruments MSP430 development ecosystem, including:

• MSP-EXP430FR2355 LaunchPad development kit

• MSP-TS43048PT target development board

• MSP430Ware software

• Code Composer Studio

• TI Resource Explorer

• Spy-Bi-Wire debugging

• TI E2E support resources

Applications

The MSP430FR2355TRSMR is suitable for a wide range of low-power mixed-signal applications, including:

• Industrial sensing

• Sensor transmitters

• Smoke detectors

• Circuit breakers

• Portable measurement equipment

• Analog signal conditioning

• Battery-powered instruments

• Data logging

• Environmental monitoring

• Energy monitoring

• Sensor interfaces

• Industrial control

• Embedded instrumentation

• Low-power IoT devices

Benefits

• 24 MHz 16-bit MSP430 processing performance

• 32KB high-endurance FRAM

• 4KB SRAM

• Integrated 12-bit ADC

• Two enhanced comparators

• Four configurable Smart Analog Combo modules

• Integrated PGA and operational amplifier functions

• Integrated 12-bit DAC functions

• Multiple 16-bit timers

• Flexible UART, SPI, and I2C communication

• Ultra-low-power operating modes

• Wide 1.8V to 3.6V supply range

• Extended -40°C to +105°C operating temperature

• Compact VQFN-32 package

• Reduced external component count for analog signal-chain designs

Packaging & Ordering Information

• Part Number: MSP430FR2355TRSMR

• Manufacturer: Texas Instruments

• Device Family: MSP430FR2355

• Package: 32-pin VQFN

• Package Code: RSM

• Package Quantity: 3,000 per large tape and reel

• Supply Voltage: 1.8 V to 3.6 V

• Operating Temperature: -40°C to +105°C

• Product Status: ACTIVE

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 MSP430FR2355 Datasheet

Frequently Asked Questions

What is MSP430FR2355TRSMR?

MSP430FR2355TRSMR is a Texas Instruments 16-bit ultra-low-power mixed-signal MCU featuring 32KB FRAM, 4KB SRAM, a 12-bit ADC, two enhanced comparators, four Smart Analog Combo modules, timers, UART, SPI, and I2C interfaces.

What is the maximum operating frequency?

The MSP430FR2355TRSMR supports a maximum CPU frequency of 24 MHz.

How much memory does the MSP430FR2355TRSMR have?

It provides 32KB of program FRAM, 512B of data FRAM, and 4KB of SRAM.

What package does MSP430FR2355TRSMR use?

MSP430FR2355TRSMR is supplied in a 32-pin VQFN package with the RSM package code.

What is the operating temperature range?

The specified operating temperature range is -40°C to +105°C.

What voltage does the MSP430FR2355TRSMR operate at?

The device operates from 1.8V to 3.6V.

Does the MSP430FR2355TRSMR have integrated analog signal-chain functions?

Yes. The MSP430FR2355 integrates four Smart Analog Combo modules that can provide configurable operational amplifier, programmable-gain amplifier, and 12-bit DAC functions. It also includes a 12-bit ADC and two enhanced comparators.

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