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Texas Instruments MSP430FR5739IDAR
- Part No.:
- MSP430FR5739IDAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR5739IDAR.pdf
- Description:
- IC MCU 16BIT 16KB FRAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,295
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Product details
Overview
MSP430FR5739IDAR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 16KB ferroelectric RAM (FRAM), 1KB SRAM, 24-MHz system clock, 12-channel 10-bit ADC, and dual eUSCI modules supporting UART/IrDA/SPI/I²C. It operates from 2 V to 3.6 V across –40°C to 85°C and targets battery-powered sensor nodes requiring nonvolatile memory endurance and real-time clock functionality.
For engineers reviewing the MSP430FR5739IDAR datasheet, MSP430FR5739IDAR pinout, MSP430FR5739IDAR application, or MSP430FR5739IDAR equivalent, key selection criteria include FRAM write endurance (10¹⁵ cycles), LPM3.5 RTC current (1.5 µA), integrated hardware multiplier, 32-pin TSSOP package compatibility, and support for secure bootloader (BSL) via UART.
Technical Context
The MSP430FR5739IDAR implements the MSP430 CPUXV2 core with seven low-power modes, including LPM4.5 (0.32 µA shutdown). Its FRAM architecture replaces flash and EEPROM, enabling fast 125-ns word writes without erase cycles and built-in ECC/MPU for data integrity.
Peripherals include five 16-bit timers (three Timer_A and three Timer_B instances), a 16-channel analog comparator with programmable hysteresis, and dual eUSCI modules: eUSCI_A0/A1 support UART/IrDA/SPI, while eUSCI_B0 supports I²C and SPI - all configurable independently with dedicated clock sources (ACLK, SMCLK, MCLK).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 24-MHz operation - enables deterministic real-time control with low code footprint |
| Nonvolatile Memory | 16KB FRAM with 10¹⁵ write cycles - eliminates flash wear-out concerns in frequent logging applications |
| RAM | 1KB SRAM - sufficient for stack, variables, and DMA buffers in compact firmware |
| ADC | 12 external + 2 internal channel, 10-bit, 200 ksps at 100 µA - supports simultaneous sensor sampling with low power overhead |
| Low-Power Mode LPM3.5 | 1.5 µA with RTC and 32-kHz crystal - enables years of calendar timekeeping on coin-cell batteries |
| eUSCI Peripherals | eUSCI_A0/A1 (UART/IrDA/SPI), eUSCI_B0 (I²C/SPI) - provides flexible serial connectivity without external level shifters |
| Supply Voltage Range | 2.0 V to 3.6 V - compatible with single-cell Li-ion, Li-SOCl₂, and dual-AA battery systems |
Pinout & Package
Package: TSSOP-38 (IDAR suffix), 12.5 mm × 6.2 mm body size, exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire debug input | Single-pin debug interface enables in-system programming and breakpoint debugging with minimal PCB footprint |
| P1.0/TA0.1/DMAE0/RTCCLK/A0*/CD0/VeREF- | Multi-function I/O with timer capture, DMA trigger, RTC calibration output, ADC input, comparator input, reference voltage | Enables synchronized sensor triggering, time-stamped data acquisition, and flexible analog front-end configuration |
| P1.1/TA0.2/TA1CLK/CDOUT/A1*/CD1/VeREF+ | Multi-function I/O with timer compare, clock input, comparator output, ADC input, reference voltage | Supports PWM generation, clock tree distribution, and precision ADC reference sourcing |
| eUSCI_A0 TX/RX (P2.0/P2.1) | UART transmit/receive pins | Direct connection to RS-232 transceivers or Bluetooth modules without external logic |
| eUSCI_B0 SCL/SDA (P1.6/P1.7) | I²C clock/data pins | Allows daisy-chaining multiple sensors (e.g., temperature, humidity, accelerometer) on shared bus |
Key Features
| Feature | Design Value |
|---|---|
| FRAM memory technology | 16KB unified program/data/storage memory with 125 ns write speed and no erase latency - accelerates firmware updates and data logging |
| Hardware CRC module | 16-bit cyclic redundancy checker for firmware image validation and communication packet integrity - reduces CPU load during boot and OTA updates |
| Real-Time Clock (RTC_B) | Calendar mode with alarm, 32-kHz crystal support, and LPM3.5 operation at 1.5 µA - enables precise time-of-day stamping in energy-harvesting systems |
| Three-channel DMA | Automates ADC-to-FRAM transfers, UART receive buffering, and timer-triggered peripheral handshaking - frees CPU for application logic |
| Integrated LDO and SVS | Fully integrated low-dropout regulator and supply voltage supervisor with reset - simplifies power design and ensures reliable brownout recovery |
Applications
| Smart Meter Data Logger | Wireless Sensor Node |
|---|---|
Use Scenario: Captures voltage, current, and temperature readings every 15 minutes and stores them in FRAM for weekly upload via NB-IoT. IC Role / Device Role / Timing Role: Main controller executing metering firmware, managing RTC calendar, and orchestrating ADC sampling and eUSCI_B0 I²C sensor reads. Use Value: 10¹⁵ FRAM write cycles ensure >10-year data logging reliability; LPM3.5 current of 1.5 µA extends battery life beyond 10 years on CR2032. | Use Scenario: Monitors indoor air quality using PM2.5, CO₂, and VOC sensors, transmitting alerts via UART to BLE module when thresholds are exceeded. IC Role / Device Role / Timing Role: Central sensor aggregator with multi-channel ADC, comparator-based threshold detection, and UART-driven host interface. Use Value: Integrated comparator with programmable hysteresis eliminates external op-amps; eUSCI_A0 UART auto-baud detection simplifies pairing with diverse BLE SoCs. |
| Industrial RTU Controller | Energy-Harvesting Thermostat |
Use Scenario: Collects Modbus RTU data from field devices over RS-485, processes alarms, and reports status via cellular modem. IC Role / Device Role / Timing Role: Protocol gateway with UART framing, DMA-accelerated Modbus response generation, and watchdog-managed fault recovery. Use Value: Hardware multiplier enables fast CRC-16 calculation for Modbus frames; 24-MHz clock ensures sub-millisecond response times under heavy polling loads. | Use Scenario: Regulates HVAC based on ambient temperature and occupancy, powered by thermoelectric generator (TEG) with intermittent 2.2–3.3 V output. IC Role / Device Role / Timing Role: Ultra-low-power system manager handling wake-up from LPM4.5, ADC conversion, PID computation, and relay control. Use Value: Wide 2.0–3.6 V operating range tolerates TEG voltage ripple; 0.32 µA LPM4.5 shutdown minimizes quiescent drain during energy scarcity. |
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 |
|---|---|---|---|
| MSP430FR5969IPM | 128KB FRAM, 8KB RAM, integrated LCD driver, higher pin count (64-QFN), no eUSCI_B0 I²C | Better suited for display-based HMI; lacks native I²C for sensor buses | Select when large firmware storage or segment LCD support is required; avoid if I²C sensor integration is critical |
| MSP430F5529IPN | 128KB flash, 8KB RAM, USB interface, no FRAM, higher active current (170 µA/MHz) | Designed for USB-connected development tools; unsuitable for battery-only deployments | Choose only for USB-hosted debug or firmware update scenarios; not viable for >5-year battery life targets |
Compared with MSP430FR5969IPM and MSP430F5529IPN, the MSP430FR5739IDAR delivers optimal balance of FRAM endurance, I²C support, and sub-µA RTC operation - making it uniquely suitable for compact, long-life sensor edge nodes where memory wear and serial peripheral flexibility are primary constraints.
Availability
MSP430FR5739IDAR is available at Aetrix Electronics and suitable for smart metering, industrial telemetry, and wireless sensor networks requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for MSP430FR5739IDAR 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 specializing in analog, embedded processing, and digital signal processing technologies, with decades of expertise in ultra-low-power design.
The MSP430FR573x product line was engineered specifically for energy-constrained sensing and system management applications - combining FRAM's endurance with intelligent peripherals to extend battery life in building automation, smart grid, and industrial monitoring systems.
FAQ
What is the maximum system clock frequency supported by the MSP430FR5739IDAR?
The MSP430FR5739IDAR supports a maximum system clock frequency of 24 MHz, achieved via its factory-trimmed DCO oscillator or external HFXT crystal. This frequency enables real-time signal processing, high-speed UART communication at up to 1 Mbps, and responsive peripheral handling while maintaining ultra-low-power operation in active mode (81.4 µA/MHz typical).
Does the MSP430FR5739IDAR include hardware support for cryptographic operations?
The MSP430FR5739IDAR does not include dedicated cryptographic accelerators such as AES or SHA engines. Security relies on software-based implementations or external co-processors. However, its FRAM memory with built-in ECC and MPU provides hardware-level protection against bit flips and unauthorized memory access - enhancing firmware integrity in untrusted environments.
Can the MSP430FR5739IDAR operate from a single 1.8-V supply?
No, the MSP430FR5739IDAR requires a minimum supply voltage of 2.0 V per its recommended operating conditions. Operation below 2.0 V risks functional failure, including FRAM write corruption, ADC inaccuracy, and clock instability. For 1.8-V systems, consider the MSP430FR2355 or MSP430FR2476, which are rated down to 1.8 V.
How many I²C interfaces does the MSP430FR5739IDAR provide?
The MSP430FR5739IDAR provides one dedicated I²C interface via eUSCI_B0, implemented on pins P1.6 (UCB0SDA) and P1.7 (UCB0SCL). It supports standard-mode (100 kbps) and fast-mode (400 kbps) operation, multi-master arbitration, and 7-bit/10-bit addressing - sufficient for connecting multiple sensors like temperature, humidity, and pressure ICs on a shared bus.
Is the MSP430FR5739IDAR pin-compatible with other devices in the MSP430FR573x family?
Yes, the MSP430FR5739IDAR in the 38-pin TSSOP (DA) package shares identical pinout and signal mapping with MSP430FR5731IDAR, MSP430FR5733IDAR, MSP430FR5735IDAR, and MSP430FR5737IDAR - enabling direct substitution within the same package variant without PCB changes, provided peripheral usage aligns with device-specific feature sets (e.g., ADC channel count, timer instances).
MSP430FR5739IDAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 30
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 14x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5739IDAR FAQ
1.How can I place an order for MSP430FR5739IDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5739IDAR 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 MSP430FR5739IDAR reliable?
The price and inventory of MSP430FR5739IDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5739IDAR is usually 5 days.
3.What payment methods are accepted for MSP430FR5739IDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5739IDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5739IDAR?
MSP430FR5739IDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5739IDAR 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 MSP430FR5739IDAR?
For technical support, including MSP430FR5739IDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5739IDAR requirements.
6.How does Aetrix verify that MSP430FR5739IDAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5739IDAR 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 MSP430FR5739IDAR meets industry standards.
7.What is the process for return or replacement of MSP430FR5739IDAR?
All MSP430FR5739IDAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5739IDAR, 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 MSP430FR5739IDAR part is unused and in its original packaging.
Return procedure for MSP430FR5739IDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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