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Texas Instruments MSP430FR2355TRSMT
- Part No.:
- MSP430FR2355TRSMT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR2355TRSMT.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:474
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Product details
Overview
MSP430FR2355TRSMT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 32KB program FRAM, 4KB RAM, and four Smart Analog Combo (SAC-L3) modules supporting configurable op-amp, PGA, and 12-bit DAC functions. It operates from 1.8 V to 3.6 V across –40°C to 105°C and integrates a 12-bit 200 ksps SAR ADC, two enhanced comparators, dual eUSCI_A (UART/IrDA/SPI) and dual eUSCI_B (SPI/I²C), and Timer_B3/TB7 peripherals - deployed in smoke detectors, sensor transmitters, and industrial circuit breakers.
For engineers reviewing the MSP430FR2355TRSMT datasheet, MSP430FR2355TRSMT pinout, MSP430FR2355TRSMT application, or MSP430FR2355TRSMT equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 current (620 nA), SAC-L3 configurability, 44 I/O count in 48-pin LQFP, and extended temperature support for industrial sensing systems.
Technical Context
The MSP430FR2355TRSMT 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 32KB FRAM (with ECC and write protection) and 4KB SRAM, enabling deterministic nonvolatile data logging without wear leveling overhead.
Four SAC-L3 modules each provide rail-to-rail OA/PGA/DAC functionality with programmable gain (×1–×33 noninverting, ×1–×32 inverting), built-in 12-bit reference DAC for offset/bias, and independent high-/low-power modes - eliminating external signal-chain components in sensor front-end designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generator; enables high code efficiency and low-cycle-count execution for real-time sensor processing. |
| FRAM Capacity | 32KB program + 512B data FRAM with ECC; supports 10¹⁵ write cycles and radiation resistance for long-life industrial logging. |
| ADC Performance | 12-bit SAR ADC, 12-channel single-ended, 200 ksps sample rate with internal 1.5/2.0/2.5 V references. |
| Low-Power Modes | LPM3.5 draws 620 nA (32-kHz crystal active); LPM4.5 draws 42 nA (SVS disabled); enables multi-year battery operation in wireless sensors. |
| SAC-L3 Modules | Four independent smart analog combos; each configurable as OA, PGA (gain ×1–×33), or 12-bit DAC - replaces discrete op-amps and DACs in analog front ends. |
| Communication Peripherals | Two eUSCI_A (UART/IrDA/SPI) and two eUSCI_B (SPI/I²C); supports simultaneous wired industrial comms (e.g., Modbus RTU over UART + I²C sensor bus). |
| Operating Temperature | –40°C to 105°C; qualified for harsh environments including smoke detectors, circuit breakers, and optical module control. |
Pinout & Package
The MSP430FR2355TRSMT is packaged in a 48-pin LQFP (PT) with 7 mm × 7 mm body size and exposed thermal pad connected to DVSS. Pin functions are multiplexed across digital I/O, analog inputs, timer capture/compare, USCI signals, and SAC-L3 terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC / DVSS | Main power pair | Supplies all digital and analog modules; requires 4.7–10 µF bulk + 0.1 µF ceramic decoupling per supply pin. |
| P1.0–P1.7, P2.0–P2.7, P3.0–P3.7, P4.0–P4.7, P5.0–P5.4, P6.0–P6.6 | Configurable I/O ports | 44 total GPIOs; P1–P4 support pin-interrupt wakeup from all LPMs including LPM4.5. |
| OA0+/OA0−/OA0O, OA1+/OA1−/OA1O, OA2+/OA2−/OA2O, OA3+/OA3−/OA3O | SAC-L3 analog terminals | Direct connection points for op-amp inputs/outputs; enable hardware-configured signal conditioning without external components. |
| UCB0SOMI/UCB0SIMO/UCB0CLK/UCB0STE, UCB1SOMI/UCB1SIMO/UCB1CLK/UCB1STE | eUSCI_B SPI/I²C interfaces | Two independent serial buses; UCB1 supports I²C only per device specification. |
| UCA0TXD/UCA0RXD/UCA0CLK/UCA0STE, UCA1TXD/UCA1RXD/UCA1CLK/UCA1STE | eUSCI_A UART/IrDA/SPI interfaces | Full-duplex UART capability on both modules; supports ISO7816 (ISOTXD/ISORXD) on UCA1 for secure element interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 32KB unified program/data FRAM with ECC, 10¹⁵ write endurance, and zero write-delay - eliminates flash erase bottlenecks in data-logging applications. |
| Smart Analog Combo (SAC-L3) | Four independent modules each offering op-amp, programmable-gain amplifier (×1–×33), and 12-bit DAC - reduces BOM and PCB area in sensor signal chains. |
| Ultra-Low-Power Operation | LPM3.5 current of 620 nA with RTC and backup memory active enables decade-scale battery life in maintenance-free industrial sensors. |
| Integrated Clock System | On-chip 24-MHz DCO+FLL (±1% accuracy), REFO, VLO, MODOSC, and support for external 32-kHz/LFXT and up to 24-MHz HFXT crystals - simplifies timing design across operating modes. |
| ROM Library | 20KB on-chip ROM containing driver libraries (GPIO, USCI, timers) and FFT routines - accelerates firmware development and reduces code footprint in FRAM. |
Applications
| Smoke and Heat Detectors | Sensor Transmitters |
|---|---|
Use Scenario: Standalone battery-powered smoke alarm with optical chamber, temperature sensing, and wireless alert transmission. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling of photodiode and thermistor, SAC-L3-based analog signal conditioning, and UART-based RF module control. Use Value: FRAM enables reliable event logging (e.g., smoke events, self-test results) over 10+ years; LPM3.5 current extends battery life beyond UL 217 requirements. | Use Scenario: Industrial pressure/temperature transmitter with 4–20 mA loop output and HART digital overlay. IC Role / Device Role / Timing Role: Signal processor handling sensor excitation, ratiometric ADC conversion, SAC-L3-based gain/offset calibration, and HART modem interface via UART. Use Value: SAC-L3 eliminates need for external precision op-amps and DACs; 105°C rating ensures operation inside hot enclosures near process equipment. |
| Circuit Breakers | Battery Pack Management |
Use Scenario: DIN-rail mounted AC circuit breaker with overcurrent detection, trip logic, and status reporting via RS-485. IC Role / Device Role / Timing Role: Real-time fault detector using ADC oversampling, comparator-triggered interrupt response (<100 ns), and eUSCI_B SPI for isolated communication. Use Value: Fast comparator response and deterministic FRAM write ensure accurate fault timestamping and trip-event storage even during brownout conditions. | Use Scenario: Multi-cell Li-ion battery pack with voltage/current/temperature monitoring, cell balancing control, and SMBus communication. IC Role / Device Role / Timing Role: Battery management unit performing periodic ADC measurements, SAC-L3-based current-sense amplifier gain switching, and SMBus (via eUSCI_B) host interface. Use Value: Unified FRAM stores calibrated coefficients and lifetime cycle counts without flash wear-out; 4KB RAM buffers real-time telemetry for burst transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2355TPT | Same die, 48-pin LQFP package (7 mm × 7 mm) with exposed thermal pad; identical electrical specs and pinout. | Preferred for prototyping and higher-power thermal dissipation; supports same SAC-L3 and FRAM features. | Select when board layout allows larger footprint and thermal pad soldering is feasible. |
| MSP430FR2155TRSMT | Omits four SAC-L3 modules; retains 32KB FRAM, 4KB RAM, ADC, comparators, and communication peripherals. | Suitable for cost-sensitive sensor nodes where analog front-end integration is not required. | Choose when SAC-L3 functionality is unnecessary and BOM reduction outweighs analog flexibility. |
Compared with MSP430FR2355TPT, the MSP430FR2355TRSMT shares identical core functionality but uses a different 48-pin LQFP variant; versus MSP430FR2155TRSMT, it adds four SAC-L3 modules enabling on-chip op-amp/PGA/DAC signal chain configuration - critical for analog-intensive industrial sensing.
Availability
MSP430FR2355TRSMT 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 MSP430FR2355TRSMT 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 MSP430FR2355TRSMT belongs to TI's ultra-low-power FRAM MCU value line, designed specifically for cost-sensitive, battery-operated sensing and measurement applications demanding nonvolatile memory endurance and analog integration.
FAQ
What is the maximum operating frequency of the MSP430FR2355TRSMT?
The MSP430FR2355TRSMT features a digitally controlled oscillator (DCO) with frequency-locked loop (FLL) capable of running the CPU at up to 24 MHz. This maximum frequency is achievable across the full operating voltage range (1.8 V to 3.6 V) and temperature range (–40°C to 105°C), with ±1% accuracy at room temperature when calibrated against the internal reference oscillator.
Does the MSP430FR2355TRSMT support hardware CRC calculation?
Yes, the MSP430FR2355TRSMT includes a dedicated 16-bit cyclic redundancy checker (CRC) peripheral. It supports both CRC-16-CCITT and CRC-16-IBM polynomials and can compute checksums over memory blocks or data streams without CPU intervention - used for firmware integrity verification and communication packet validation in the MSP430FR2355TRSMT.
How many Smart Analog Combo (SAC-L3) modules does the MSP430FR2355TRSMT integrate?
The MSP430FR2355TRSMT integrates four Smart Analog Combo (SAC-L3) modules. Each SAC-L3 can be independently configured as a general-purpose operational amplifier, a programmable-gain amplifier (with gains from ×1 to ×33), or a 12-bit DAC - providing flexible analog signal conditioning directly on the MSP430FR2355TRSMT die.
What low-power mode current is specified for the MSP430FR2355TRSMT in LPM3.5?
The MSP430FR2355TRSMT specifies 620 nA typical current consumption in LPM3.5 mode with the 32-kHz crystal oscillator active and SVS enabled. This mode keeps the real-time clock counter and 32-byte backup memory functional while powering down the CPU and most peripherals - enabling ultra-low-power timekeeping and event logging in the MSP430FR2355TRSMT.
Is the MSP430FR2355TRSMT pin-compatible with other devices in the MSP430FR235x family?
Yes, the MSP430FR2355TRSMT is pin-compatible with other 48-pin LQFP variants in the MSP430FR235x family, including MSP430FR2355TPT and MSP430FR2353TRSMT. All share identical pin assignments, electrical characteristics, and package dimensions (7 mm × 7 mm), allowing direct substitution in designs where FRAM size or RAM capacity differences are acceptable.
MSP430FR2355TRSMT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 28
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR2355TRSMT FAQ
1.How can I place an order for MSP430FR2355TRSMT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2355TRSMT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MSP430FR2355TRSMT reliable?
The price and inventory of MSP430FR2355TRSMT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2355TRSMT is usually 5 days.
3.What payment methods are accepted for MSP430FR2355TRSMT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2355TRSMT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2355TRSMT?
MSP430FR2355TRSMT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2355TRSMT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MSP430FR2355TRSMT?
For technical support, including MSP430FR2355TRSMT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2355TRSMT requirements.
6.How does Aetrix verify that MSP430FR2355TRSMT is sourced from the original manufacturer or authorized distributors?
All MSP430FR2355TRSMT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSP430FR2355TRSMT meets industry standards.
7.What is the process for return or replacement of MSP430FR2355TRSMT?
All MSP430FR2355TRSMT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2355TRSMT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MSP430FR2355TRSMT part is unused and in its original packaging.
Return procedure for MSP430FR2355TRSMT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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