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Texas Instruments MSP430FR5735IDA
- Part No.:
- MSP430FR5735IDA
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR5735IDA.pdf
- Description:
- IC MCU 16BIT 8KB FRAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:298
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Product details
Overview
MSP430FR5735IDA from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 8KB FRAM nonvolatile memory, 1KB RAM, 24-MHz CPU, 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 and data acquisition systems requiring fast FRAM writes and RTC calendar functionality.
For engineers reviewing the MSP430FR5735IDA datasheet, MSP430FR5735IDA pinout, MSP430FR5735IDA application, or MSP430FR5735IDA equivalent, key selection criteria include FRAM endurance (10¹⁵ cycles), LPM3.5 RTC current (1.5 µA), 32-pin TSSOP package compatibility, and integrated hardware multiplier for real-time signal processing in constrained power budgets.
Technical Context
The MSP430FR5735IDA implements the MSP430xV2 CPU core with unified FRAM memory architecture enabling simultaneous read/write operations and eliminating erase-before-write delays. Its power management system integrates an LDO, SVS, and zero-power brownout detection to maintain operation during supply transients.
Peripherals include five 16-bit timers (TA0/TA1/TB0/TB1/TB2), three-channel DMA, 16-channel analog comparator with programmable hysteresis, and dual eUSCI modules-eUSCI_A0/A1 for UART/IrDA/SPI and eUSCI_B0 for I²C/SPI-with hardware bootloader support via UART.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU (MSP430xV2) running up to 24 MHz - enables deterministic real-time control with low instruction cycle overhead. |
| Nonvolatile Memory | 8 KB FRAM - supports 10¹⁵ write cycles, 125 ns/word write speed, ECC protection, and unified program/data storage without erase latency. |
| ADC | 12 external + 2 internal channel, 10-bit SAR ADC - samples at 200 ksps with 100 µA active current, internal reference, and sample-and-hold. |
| Low-Power Modes | LPM3.5 (RTC + crystal): 1.5 µA typical - sustains calendar timekeeping and wake-up events while preserving full register context. |
| Supply Range | 2.0 V to 3.6 V - compatible with single-cell Li-ion, two-cell alkaline, or regulated 3.3 V rails without external level shifting. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and building automation environments with no derating required. |
| eUSCI Peripherals | eUSCI_A0/A1 (UART/IrDA/SPI) + eUSCI_B0 (I²C/SPI) - enables concurrent wired communication protocols with automatic baud-rate detection and clock stretching support. |
Pinout & Package
TSSOP-38 package (38-pin thin shrink small-outline package), 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 data I/O | Single-pin debug interface for programming and debugging; asserts reset on low pulse ≥ 1.5 µs; accepts NMI edge-triggered events. |
| TEST/SBWTCK | Spy-Bi-Wire test clock | Required for SBW JTAG emulation; must be driven high during normal operation to avoid unintended debug entry. |
| P1.0/TA0.1/DMAE0/RTCCLK/A0*/CD0/VeREF- | Multi-function port pin | Supports timer capture, DMA trigger, RTC calibration output, ADC input A0, comparator input CD0, and negative reference voltage input. |
| PJ.4/XIN & PJ.5/XOUT | LFXT crystal oscillator terminals | Connects to 32.768 kHz crystal for RTC operation; requires external load capacitors (12.5 pF typical); enables LPM3.5 mode. |
| AVCC / AVSS / DVCC / DVSS | Analog/digital power and ground | Separate analog and digital supplies reduce noise coupling; AVCC must be ≥ DVCC and filtered with 100 nF capacitor near device. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 8 KB unified memory with 10¹⁵ write endurance, 125 ns/word write speed, and built-in ECC - eliminates flash wear-out concerns in logging applications. |
| Real-Time Clock (RTC_B) | Calendar mode with alarm, temperature-compensated 32-kHz crystal support, and LPM3.5 current of 1.5 µA - enables decade-long battery life in time-stamped sensor nodes. |
| Hardware Multiplier (MPY32) | 32-bit signed/unsigned multiply in one cycle - accelerates FIR filtering, PID control, and sensor linearization without CPU intervention. |
| Three-Channel DMA | Transfers ADC results, UART buffers, or FRAM blocks autonomously - reduces CPU wake-ups and lowers active-mode current in data acquisition loops. |
| Comparator_D with Hysteresis | 16-channel analog comparator with programmable hysteresis and internal voltage reference - replaces external comparators in threshold-detection circuits. |
Applications
| Smart Metering Endpoint | Wireless Sensor Node |
|---|---|
Use Scenario: Battery-powered electricity/water meter collecting pulse counts and temperature every 15 minutes, storing logs in FRAM, and transmitting via sub-GHz RF link. IC Role / Device Role / Timing Role: Main controller executing metrology firmware, managing RTC calendar, buffering sensor data in FRAM, and coordinating UART-based RF module communication. Use Value: 1.5 µA LPM3.5 RTC current extends 2-AA battery life beyond 10 years; FRAM's instant write capability prevents data loss during unexpected power drops. |
Use Scenario: Environmental monitor deployed in HVAC ducts measuring temperature, humidity, and CO₂, waking every 30 seconds to sample and transmit via BLE gateway. IC Role / Device Role / Timing Role: System-on-chip handling ADC sampling, I²C sensor reads, SPI flash logging, and UART-to-BLE bridge timing. Use Value: Dual eUSCI modules enable concurrent I²C sensor interface and UART BLE communication; 8 KB FRAM stores 72 hours of compressed sensor history without wear leveling. |
| Industrial Data Logger | Home Automation Hub |
Use Scenario: DIN-rail mounted logger acquiring analog process signals (4–20 mA, 0–10 V), timestamping each reading, and exporting CSV via USB-UART adapter. IC Role / Device Role / Timing Role: Precision analog front-end controller with 10-bit ADC, RTC timestamping, FRAM circular buffer, and UART bootloader for field firmware updates. Use Value: 200 ksps ADC sampling supports oversampling for 12-bit effective resolution; hardware CRC ensures log file integrity over 10+ years of operation. |
Use Scenario: Central hub aggregating Z-Wave and Zigbee devices, running local automation rules, and syncing state to cloud via Wi-Fi module. IC Role / Device Role / Timing Role: Co-processor managing secure key storage in FRAM, real-time scheduling of sensor polling, and watchdog supervision of main application processor. Use Value: FRAM's radiation resistance and nonmagnetic properties ensure reliable operation near motors or transformers; 24-MHz CPU handles encryption primitives efficiently. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5739IDA | 16 KB FRAM, same 38-pin DA package, identical peripherals and pinout - differs only in FRAM capacity and ADC channel count (12 ext/2 int vs. same). | Preferred where extended data logging depth or larger firmware image is required without PCB change. | Select MSP430FR5739IDA when >8 KB nonvolatile storage is needed; pin-compatible upgrade path with no layout modification. |
| MSP430FR5969IPM | 64 KB FRAM, 2 KB RAM, 16-MHz max clock, 16-pin LQFP - newer FRAM generation with enhanced USCI and integrated LCD driver. | Targets higher-complexity UI-enabled devices; lacks RTC_B calendar mode and has different low-power wake-up behavior. | Choose MSP430FR5969IPM for new designs needing larger memory or LCD support; not drop-in due to package and peripheral differences. |
Compared with MSP430FR5739IDA, the MSP430FR5735IDA offers 50% less FRAM but identical low-power performance and pin compatibility; versus MSP430FR5969IPM, it delivers proven RTC calendar accuracy and simpler migration from legacy MSP430FR57xx designs without requalification.
Availability
MSP430FR5735IDA is available at Aetrix Electronics and suitable for smart metering endpoints, wireless sensor nodes, and industrial data loggers requiring stable component supply, long-term lifecycle assurance, and TI-qualified ultra-low-power operation.
Supply support for MSP430FR5735IDA 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 and embedded processing solutions, with over 50 years of innovation in low-power microcontrollers and precision analog products.
The MSP430FR57xx family was designed specifically for ultra-low-power sensing and system management in energy-constrained applications such as building automation, smart grid infrastructure, and portable instrumentation.
FAQ
What is the maximum operating frequency of the MSP430FR5735IDA?
The MSP430FR5735IDA supports a maximum system clock frequency of 24 MHz using its factory-trimmed DCO or external HFXT crystal. This allows real-time execution of complex algorithms while maintaining ultra-low active-mode current of 81.4 µA/MHz - critical for battery-operated applications where processing throughput must be balanced against energy budget constraints. The MSP430FR5735IDA achieves this performance within its 2 V to 3.6 V supply range.
Does the MSP430FR5735IDA include hardware support for cryptographic operations?
The MSP430FR5735IDA does not integrate dedicated cryptographic accelerators (e.g., AES, SHA). It relies on software libraries executed on the 16-bit CPU, optionally accelerated by its 32-bit hardware multiplier for modular arithmetic. For applications requiring certified hardware security, designers should consider newer MSP430FR59xx or MSP432P4xx families. The MSP430FR5735IDA prioritizes ultra-low-power analog integration and FRAM reliability over crypto acceleration.
Can the MSP430FR5735IDA operate from a single 3.3-V supply?
Yes, the MSP430FR5735IDA operates across a 2.0 V to 3.6 V supply range, making it fully compatible with standard 3.3-V logic rails. Its integrated LDO regulates core voltage independently, and all I/Os are 3.3-V tolerant - eliminating need for level shifters when interfacing with common peripherals. This simplifies design for applications like industrial sensors or home automation hubs powered directly from 3.3-V regulators. The MSP430FR5735IDA maintains full specification compliance at 3.3 V.
How many I²C interfaces does the MSP430FR5735IDA support?
The MSP430FR5735IDA supports one dedicated I²C interface via eUSCI_B0, compliant with standard and fast-mode (up to 400 kHz) specifications. It includes hardware address recognition, clock stretching, and multi-master arbitration - sufficient for connecting multiple sensors (e.g., temperature, humidity, pressure) on a shared bus. While eUSCI_A0/A1 support SPI and UART, only eUSCI_B0 provides native I²C functionality. The MSP430FR5735IDA does not feature dual independent I²C controllers.
What development tools are officially supported for the MSP430FR5735IDA?
Texas Instruments officially supports Code Composer Studio™ IDE (free version), MSP-FET430U40A full development kit, and MSP-TS430RHA40A target board for the MSP430FR5735IDA. The MSP-EXP430FR5739 LaunchPad is also compatible via pin mapping to the 38-pin DA package. All tools provide full debug, flash programming, and power measurement capabilities - essential for validating ultra-low-power modes like LPM3.5. The MSP430FR5735IDA is not supported by newer MSP430FR59xx-specific launchpads.
MSP430FR5735IDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- Series:
- MSP430™ FRAM
- Packaging:
- Tube
- 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:
- 8KB (8K 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:
MSP430FR5735IDA FAQ
1.How can I place an order for MSP430FR5735IDA through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5735IDA 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 MSP430FR5735IDA reliable?
The price and inventory of MSP430FR5735IDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5735IDA is usually 5 days.
3.What payment methods are accepted for MSP430FR5735IDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5735IDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5735IDA?
MSP430FR5735IDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5735IDA 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 MSP430FR5735IDA?
For technical support, including MSP430FR5735IDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5735IDA requirements.
6.How does Aetrix verify that MSP430FR5735IDA is sourced from the original manufacturer or authorized distributors?
All MSP430FR5735IDA 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 MSP430FR5735IDA meets industry standards.
7.What is the process for return or replacement of MSP430FR5735IDA?
All MSP430FR5735IDA units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5735IDA, 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 MSP430FR5735IDA part is unused and in its original packaging.
Return procedure for MSP430FR5735IDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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