Texas Instruments MSP430FR2353TRSMT

Overview

MSP430FR2353TRSMT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 16KB program FRAM, 512B data FRAM, and 2KB RAM, operating from 1.8 V to 3.6 V across –40°C to 105°C. It integrates four Smart Analog Combo (SAC) modules, a 12-bit 200 ksps ADC, two enhanced comparators, dual eUSCI_A (UART/IrDA/SPI) and dual eUSCI_B (SPI/I²C), and supports smoke detector and sensor transmitter applications.

For engineers reviewing the MSP430FR2353TRSMT datasheet, MSP430FR2353TRSMT pinout, MSP430FR2353TRSMT application, or MSP430FR2353TRSMT equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), LPM3.5 current (620 nA), SAC configurability (OA/PGA/DAC modes), and 48-pin LQFP package compatibility with TI's MSP-EXP430FR2355 LaunchPad™.

Technical Context

The MSP430FR2353TRSMT implements a 16-bit RISC CPU with 24-MHz DCO+FLL clock system, ±1% accuracy at room temperature, and sub-10 µs wake-up from LPMs. Its memory architecture unifies FRAM for code, constants, and data storage with built-in ECC and configurable write protection.

Four SAC-L3 modules provide hardware-configurable signal-chain functions - each supports rail-to-rail OA, programmable-gain amplifier (×1–×33 noninverting, ×1–×32 inverting), and 12-bit reference DAC - enabling analog front-end consolidation without external components.

Key Specifications

Pinout & Package

Package: 48-pin LQFP (PT), 7 mm × 7 mm body, exposed thermal pad connected to DVSS. Pin count and I/O mapping match TI's MSP-EXP430FR2355 LaunchPad™ and MSP-TS43048PT target board.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MSP430FR2353TRSMT, the MSP430FR2355TPT offers double FRAM for firmware scalability without layout changes, while the MSP430FR2153TPT removes SAC to lower cost where integrated analog front-end is unused - both retain identical 48-pin LQFP packaging and core MCU features.

Availability

MSP430FR2353TRSMT is available at Aetrix Electronics and suitable for smoke detectors, sensor transmitters, and circuit breakers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MSP430FR2353TRSMT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The MSP430FR235x family targets ultra-low-power sensing and measurement applications, integrating FRAM and configurable analog blocks to reduce system complexity and power consumption in battery- and energy-harvesting devices.

FAQ

What is the maximum operating frequency of the MSP430FR2353TRSMT?

The MSP430FR2353TRSMT features a digitally controlled oscillator (DCO) with frequency-locked loop (FLL) supporting up to 24 MHz operation. This maximum clock speed is achievable across the full –40°C to 105°C temperature range and 1.8–3.6 V supply, enabling real-time sensor processing without external crystal dependency. The DCO accuracy is ±1% at room temperature using the on-chip reference.

Does the MSP430FR2353TRSMT support hardware UART communication?

Yes, the MSP430FR2353TRSMT integrates two enhanced USCI_A modules (eUSCI_A0 and eUSCI_A1), each supporting full-duplex UART with IrDA and SPI modes. These peripherals provide dedicated hardware TX/RX buffering, automatic baud-rate generation, and error detection - eliminating bit-banged software UART overhead and ensuring robust serial communication in noisy industrial environments.

How many analog input channels does the MSP430FR2353TRSMT ADC support?

The MSP430FR2353TRSMT includes a 12-bit successive approximation register (SAR) ADC with up to 12 single-ended input channels (A0–A11), mapped across multiple I/O ports. Channel selection is fully software configurable, and the ADC supports internal references (1.5 V, 2.0 V, 2.5 V), sample-and-hold, and programmable conversion timing - meeting requirements for multi-sensor signal acquisition in compact designs.

What is the purpose of the Smart Analog Combo (SAC) modules in the MSP430FR2353TRSMT?

The MSP430FR2353TRSMT integrates four SAC-L3 modules, each configurable as a rail-to-rail operational amplifier, programmable-gain amplifier (with gains from ×1 to ×33), or 12-bit DAC. These replace discrete analog components in sensor signal chains - enabling amplification, filtering, offset adjustment, and reference generation directly on-chip - reducing PCB area, BOM cost, and calibration complexity in detector and transmitter applications.

Is the MSP430FR2353TRSMT pin-compatible with other devices in the MSP430FR235x family?

Yes, the MSP430FR2353TRSMT in the 48-pin LQFP (PT) package shares identical pinout, electrical characteristics, and peripheral mapping with the MSP430FR2355TPT and MSP430FR215x series in the same package. This allows direct substitution within the same footprint for memory scaling (FR2355) or analog feature reduction (FR2153), provided firmware accommodates differences in FRAM size or SAC availability.