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Texas Instruments MSP430FR2355TRHAT
- Part No.:
- MSP430FR2355TRHAT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR2355TRHAT.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,337
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Product details
Overview
MSP430FR2355TRHAT from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 32KB FRAM, 4KB RAM, and four Smart Analog Combo (SAC-L3) modules for configurable op-amp or DAC operation. It operates from 1.8 V to 3.6 V across –40°C to 105°C, supports 24 MHz DCO with ±1% accuracy, and delivers 142 µA/MHz active current - deployed in battery-powered industrial sensor transmitters and smoke detectors.
For engineers reviewing the MSP430FR2355TRHAT datasheet, MSP430FR2355TRHAT pinout, MSP430FR2355TRHAT application, or MSP430FR2355TRHAT equivalent, key selection criteria include its 40-pin VQFN (RHA) package, integrated SAC-L3 signal-chain flexibility, LPM3.5 standby current of 620 nA, and dual eUSCI_A/eUSCI_B interfaces for UART/I²C/SPI in space-constrained sensing nodes.
Technical Context
The MSP430FR2355TRHAT implements a 16-bit RISC CPU with constant generator and 32-bit hardware multiplier (MPY32), enabling efficient signal processing in low-power modes. Its clock system integrates DCO (24 MHz), REFO (32 kHz), VLO (10 kHz), and external HFXT/LFXT support - all programmable via CS module with prescalers for MCLK/SMCLK.
Four SAC-L3 modules each provide rail-to-rail OA, PGA (×1–×33 noninverting), 12-bit DAC reference, and configurable power modes - directly supporting analog front-end tasks without external components. The 12-bit SAR ADC (200 ksps, 12-channel) shares internal references (1.5/2.0/2.5 V) and interfaces with SAC outputs for closed-loop conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generator; enables high code efficiency for embedded control and sensor math. |
| Memory | 32KB program FRAM + 512B data FRAM + 4KB RAM; unified nonvolatile memory with 10¹⁵ write endurance and ECC protection. |
| Operating Voltage | 1.8 V to 3.6 V; wide range supports direct battery operation (e.g., 2×AA or LiSOCl₂) without regulators in many applications. |
| Low-Power Modes | LPM3.5 draws 620 nA (32-kHz crystal active); LPM4.5 draws 42 nA (SVS disabled); enables multi-year battery life in intermittent wake-up systems. |
| Analog Peripherals | 12-bit SAR ADC (12 channels, 200 ksps), two enhanced comparators (eCOMP), four SAC-L3 modules (OA/PGA/DAC), and internal 1.5/2.0/2.5 V references. |
| Digital Interfaces | Two eUSCI_A (UART/IrDA/SPI) and two eUSCI_B (SPI/I²C) modules; supports simultaneous wired communication and sensor bus interfacing. |
| Package & Pins | 40-pin VQFN (RHA), 6 mm × 6 mm; provides 36 GPIOs including 32 interrupt-capable pins (P1–P4) for robust wake-from-LPM event handling. |
Pinout & Package
Package: 40-pin VQFN (RHA), 6 mm × 6 mm, thermal pad connected to DVSS per TI recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC / DVSS | Main digital/analog power pair | Single-supply domain requiring 4.7–10 µF bulk + 0.1 µF ceramic decoupling; powers all digital logic and analog modules including SAC and ADC. |
| RST/NMI/SBWTDIO TEST/SBWTCK |
Reset, NMI, and Spy-Bi-Wire debug interface | Enables programming, debugging, and boundary-scan test via 2-wire SBW; no JTAG header required for development. |
| 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 GPIO with multiplexed peripherals | 36 total I/Os; P1–P4 support pin-interrupt wakeup from all LPMs including LPM4.5; SAC, ADC, eUSCI, and Timer_B signals mapped to specific pins. |
| XIN / XOUT | External low-frequency crystal oscillator input/output | Supports 32.768 kHz crystal for RTC and LPM3 timing; requires external load capacitors per layout guidelines. |
| MCLK / SMCLK / ACLK | System clock outputs | Programmable clock distribution enables synchronous peripheral timing; SMCLK derived from MCLK with 1/2/4/8 prescaler for flexible peripheral clocking. |
Key Features
| Feature | Design Value |
|---|---|
| Smart Analog Combo (SAC-L3) | Four independent modules each configurable as rail-to-rail op-amp, programmable-gain amplifier (×1–×33), or 12-bit DAC - reduces BOM count and PCB area in analog signal chains. |
| Ferroelectric RAM (FRAM) | 32KB program + 512B data FRAM with ECC, 10¹⁵ write cycles, and instant write capability - eliminates flash erase delays and wear leveling overhead in data-logging applications. |
| Ultra-Low-Power Operation | 142 µA/MHz active current; 620 nA LPM3.5 (32-kHz crystal active); 42 nA LPM4.5 - enables decade-scale battery life in wireless sensor nodes and safety-critical detectors. |
| Integrated Signal Chain | 12-bit SAR ADC (200 ksps, 12-channel) with shared internal references and direct SAC output routing - supports closed-loop sensor conditioning without external op-amps or DACs. |
| Dual eUSCI Modules | Two eUSCI_A (UART/IrDA/SPI) and two eUSCI_B (SPI/I²C) - allows concurrent communication with host MCU, sensor arrays, and display interfaces in compact industrial controllers. |
Applications
| Smoke Detector Signal Processing | Sensor Transmitter Node |
|---|---|
|
Use Scenario: Standalone optical or ionization smoke detector with temperature compensation and self-test functionality. IC Role / Device Role / Timing Role: Primary controller executing smoke algorithm, driving buzzer/LED, managing RTC-based self-test intervals, and logging fault events to FRAM. Use Value: Extended –40°C to 105°C operation ensures reliability in attic or garage installations; LPM3.5 current of 620 nA enables >10-year battery life on CR123A cells. |
Use Scenario: Battery-powered industrial pressure/temperature transmitter sending data over RS-485 or LoRaWAN gateway. IC Role / Device Role / Timing Role: Sensor interface MCU acquiring analog inputs via ADC+SAC, performing linearization, packaging data, and managing low-duty-cycle radio wakeups. Use Value: Integrated SAC-L3 replaces discrete op-amp and DAC, reducing component count by ≥4; FRAM enables instantaneous event logging during power loss. |
| Circuit Breaker Monitoring | Optical Module Control |
|
Use Scenario: DIN-rail mounted circuit breaker with real-time current/voltage sampling, thermal derating, and trip-event storage. IC Role / Device Role / Timing Role: High-accuracy analog acquisition engine using ADC with SAC-referenced biasing, coupled with CRC-protected FRAM for trip-log retention. Use Value: 12-bit ADC with 200 ksps sampling captures transient overcurrent waveforms; radiation-resistant FRAM ensures data integrity in EMI-heavy electrical panels. |
Use Scenario: SFP+ or QSFP pluggable optical transceiver requiring precise TEC control, laser bias, and digital diagnostics (DDM). IC Role / Device Role / Timing Role: Embedded monitor/controller managing thermistor readings, DAC-driven TEC current, and I²C-based DOM interface to host switch. Use Value: Four SAC-L3 modules independently configure as precision current sources and voltage references for laser bias and TEC drive - eliminating external DACs and op-amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2353TRHAT | 16KB FRAM, 2KB RAM, same SAC/ADC/peripheral set; identical 40-pin VQFN package and pinout. | Lower memory footprint suits simpler sensor nodes with minimal firmware or logging requirements. | Select when application firmware size <16KB and data buffering needs ≤2KB RAM; retains full peripheral compatibility and migration path. |
| MSP430FR2155TRHAT | Same FRAM/RAM capacity but lacks SAC-L3 modules; retains 12-bit ADC, eUSCI, timers, and LPM performance. | Targeted at cost-sensitive applications where analog signal conditioning is handled externally or not required. | Choose when SAC functionality is unnecessary and BOM cost reduction is prioritized over on-chip analog integration. |
Compared with MSP430FR2353TRHAT, the MSP430FR2355TRHAT adds 16KB FRAM and 2KB RAM for larger firmware or extended data logging; versus MSP430FR2155TRHAT, it delivers four SAC-L3 modules enabling fully integrated analog front-ends - critical for space-constrained sensor signal chains.
Availability
MSP430FR2355TRHAT is available at Aetrix Electronics and suitable for smoke detectors, industrial sensor transmitters, circuit breaker monitors, and optical module controllers requiring stable component supply, long-term lifecycle assurance, and extended temperature operation.
Supply support for MSP430FR2355TRHAT 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 with deep expertise in low-power design and industrial-grade reliability.
The MSP430FR235x product line targets ultra-low-power sensing and measurement applications, integrating FRAM and smart analog peripherals to reduce system complexity and extend battery life in harsh environments.
FAQ
What is the operating temperature range of the MSP430FR2355TRHAT?
The MSP430FR2355TRHAT is rated for operation from –40°C to 105°C. This extended temperature range enables deployment in demanding industrial environments such as electrical panels, outdoor sensor enclosures, and HVAC systems - where ambient temperatures exceed standard commercial grade limits. The device maintains full FRAM functionality and LPM3.5 current spec across this range.
How does the MSP430FR2355TRHAT differ from the MSP430FR2353TRHAT?
The MSP430FR2355TRHAT features 32KB FRAM and 4KB RAM, while the MSP430FR2353TRHAT offers 16KB FRAM and 2KB RAM. Both share identical 40-pin VQFN packaging, SAC-L3 modules, ADC, timers, and low-power specs. Firmware and hardware designs are pin-compatible, allowing seamless migration upward when additional memory is needed.
Does the MSP430FR2355TRHAT support crystal oscillators?
Yes, the MSP430FR2355TRHAT supports both external crystal oscillators: a 32.768 kHz LFXT for RTC and low-power timing, and an HFXT up to 24 MHz for high-speed system clocks. The device also includes internal oscillators (DCO, REFO, VLO) - enabling full operation without external crystals if timing accuracy permits.
What development tools are supported for the MSP430FR2355TRHAT?
The MSP430FR2355TRHAT is supported by the MSP-EXP430FR2355 LaunchPad™ development kit and the MSP-TS43048PT target board. TI's free MSP430Ware™ software, integrated into Code Composer Studio™ IDE, provides driver libraries, FFT routines, and example projects - accelerating firmware development for sensor signal processing and low-power control.
Can the Smart Analog Combo (SAC) modules operate independently on the MSP430FR2355TRHAT?
Yes, all four SAC-L3 modules on the MSP430FR2355TRHAT operate independently and can be configured simultaneously as op-amps, PGAs, or DACs. Each SAC has dedicated input routing, gain settings, and power modes - enabling concurrent analog functions such as sensor biasing, signal amplification, and reference generation without resource contention.
MSP430FR2355TRHAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 40-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, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 36
- 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 10x12b; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR2355TRHAT FAQ
1.How can I place an order for MSP430FR2355TRHAT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2355TRHAT 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 MSP430FR2355TRHAT reliable?
The price and inventory of MSP430FR2355TRHAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2355TRHAT is usually 5 days.
3.What payment methods are accepted for MSP430FR2355TRHAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2355TRHAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2355TRHAT?
MSP430FR2355TRHAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2355TRHAT 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 MSP430FR2355TRHAT?
For technical support, including MSP430FR2355TRHAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2355TRHAT requirements.
6.How does Aetrix verify that MSP430FR2355TRHAT is sourced from the original manufacturer or authorized distributors?
All MSP430FR2355TRHAT 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 MSP430FR2355TRHAT meets industry standards.
7.What is the process for return or replacement of MSP430FR2355TRHAT?
All MSP430FR2355TRHAT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2355TRHAT, 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 MSP430FR2355TRHAT part is unused and in its original packaging.
Return procedure for MSP430FR2355TRHAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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