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Texas Instruments MSP430FR5729IDA
- Part No.:
- MSP430FR5729IDA
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR5729IDA.pdf
- Description:
- IC MCU 16BIT 16KB FRAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:415
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Product details
Overview
MSP430FR5729IDA from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 16KB FRAM, 1KB RAM, 10-bit ADC with 12 external channels, 16-channel analog comparator, 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.
For engineers reviewing the MSP430FR5729IDA datasheet, MSP430FR5729IDA pinout, MSP430FR5729IDA application, or MSP430FR5729IDA equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), RTC-with-calendar support, low-power LPM3.5 mode (1.5 µA with crystal), and TSSOP-38 package compatibility for space-constrained industrial sensing designs.
Technical Context
The MSP430FR5729IDA integrates a 16-bit CPUXV2 core with hardware multiplier and three-channel DMA, enabling efficient signal processing in active mode (81.4 µA/MHz typical). Its memory subsystem uses ferroelectric RAM with built-in ECC and MPU, eliminating flash write delays and wear-out concerns.
Peripherals include five 16-bit timers (three Timer_A and three Timer_B instances), eUSCI_A0/A1 for dual serial interfaces, and eUSCI_B0 for I²C/SPI - all configurable without CPU intervention via register-based control and interrupt-driven operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 8-MHz clock - enables deterministic real-time control with low gate count and minimal power per instruction. |
| Nonvolatile Memory | 16KB FRAM with ECC and MPU - supports simultaneous read/write, 125 ns/word write speed, and infinite endurance for logging and firmware updates. |
| Analog Peripherals | 10-bit ADC (12 ext + 2 int channels, 200 ksps @ 100 µA) and 16-channel comparator with programmable hysteresis - suitable for multi-sensor analog front-end consolidation. |
| Low-Power Modes | LPM3.5 (RTC + crystal): 1.5 µA; LPM4.5 (shutdown): 0.32 µA - extends coin-cell battery life to years in periodic wake-up sensor applications. |
| Serial Interfaces | eUSCI_A0/A1 (UART/IrDA/SPI) + eUSCI_B0 (I²C/SPI) - provides dual independent communication paths for sensor-to-host and sensor-to-peripheral connectivity. |
| Package | TSSOP-38 (12.5 mm × 6.2 mm) - surface-mount compatible with standard reflow profiles and accessible for manual prototyping and automated assembly. |
| Supply Range | 2.0 V to 3.6 V - supports direct connection to single Li-ion, two alkaline, or regulated 3.3 V rails without external level shifting. |
Pinout & Package
TSSOP-38 package with exposed thermal pad recommended for connection to DVSS. Pin functions validated per TI SLASE35C datasheet Section 4.2 (DA package pin diagram) and Table 4-1 (Signal Descriptions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.1/DMAE0/RTCCLK/A0*/CD0/VeREF-* | Multi-function I/O | Primary RTC calibration output, ADC channel A0 input, comparator CD0, and DMA trigger source - enables time-stamped sensor sampling without CPU overhead. |
| P1.1/TA0.2/TA1CLK/CDOUT/A1*/CD1/VeREF+* | Multi-function I/O | ADC reference voltage input (VeREF+), comparator output (CDOUT), and timer clock source - supports precision ratiometric measurements and synchronized PWM generation. |
| P1.4/TB0.1/UCA0STE/A4*/CD4 | Multi-function I/O | Slave transmit enable for eUSCI_A0 SPI, ADC channel A4 input, and comparator CD4 - allows daisy-chained sensor interface with local analog conditioning. |
| P2.5/TB0.0/UCA1TXD/UCA1SIMO | Serial TX / Timer | Transmit data line for eUSCI_A1 UART/SPI and TB0 capture/compare input - supports isolated host communication while maintaining timer-based event timing. |
| P2.6/TB1.0/UCA1RXD/UCA1SOMI | Serial RX / Timer | Receive data line for eUSCI_A1 UART/SPI and TB1 capture/compare input - enables full-duplex serial link with hardware timestamping of incoming frames. |
| RST/NMI/SBWTDIO | Reset & Debug | Active-low reset, non-maskable interrupt, and Spy-Bi-Wire debug I/O - permits in-system programming and recovery without dedicated JTAG header. |
Key Features
| Feature | Design Value |
|---|---|
| FRAM Memory Architecture | 16KB unified program/data/storage memory with 10¹⁵ write cycles - eliminates erase-before-write delays and enables true atomic logging in power-fail scenarios. |
| Real-Time Clock with Calendar | Hardware RTC in LPM3.5 consuming only 1.5 µA with 32-kHz crystal - delivers accurate timekeeping and alarm-triggered wake-up for scheduled sensor reads. |
| Three-Channel DMA | Autonomous data movement between ADC, FRAM, and peripherals - reduces CPU load by >70% during burst acquisition and enables zero-CPU sleep-mode operation. |
| Enhanced USCI Modules | eUSCI_A0/A1 (UART/IrDA/SPI) + eUSCI_B0 (I²C/SPI) - supports concurrent wired (I²C sensor bus) and wireless (UART to BLE module) communication stacks. |
| Ultra-Low-Power Analog | 10-bit ADC at 200 ksps with internal reference and sample-and-hold - achieves <1 LSB INL while drawing only 100 µA, critical for energy harvesting systems. |
Applications
| Smart Meter Sensor Node | Industrial Temperature Monitor |
|---|---|
Use Scenario: Battery-powered utility meter collecting voltage, current, and power quality data every 15 minutes. IC Role / Device Role / Timing Role: Primary system controller executing metrology algorithms, managing FRAM-based data logs, and waking from LPM4.5 on RTC alarm. Use Value: 0.32 µA shutdown current extends 2xAA battery life beyond 10 years; FRAM enables secure, wear-free firmware updates and tamper-proof event logging. | Use Scenario: DIN-rail mounted temperature logger in HVAC control panel with thermistor and RTD inputs. IC Role / Device Role / Timing Role: Analog front-end processor acquiring 8-channel thermal data, applying linearization, and transmitting via RS-485 UART interface. Use Value: Integrated 16-channel comparator validates sensor integrity; 10-bit ADC with internal reference ensures ±0.5°C accuracy without external precision references. |
| Wireless Sensor Gateway | Asset Tracking Beacon |
Use Scenario: Sub-GHz LoRaWAN gateway aggregating data from 20+ environmental sensors via I²C and SPI buses. IC Role / Device Role / Timing Role: Protocol bridge coordinating eUSCI_B0 (I²C sensor hub) and eUSCI_A1 (UART to transceiver), with DMA-managed buffer transfers. Use Value: Dual eUSCI modules eliminate external bus arbitration logic; 16KB FRAM stores encrypted payloads before RF transmission. | Use Scenario: GPS-denied indoor asset tracker using accelerometer motion detection and BLE beacon broadcast. IC Role / Device Role / Timing Role: Motion-triggered controller using P1.x interrupts and TA0 timers to initiate BLE advertising only on movement events. Use Value: LPM3 standby at 6.3 µA with VLO enables multi-year operation on CR2032; FRAM retains last-known location during deep sleep. |
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 |
|---|---|---|---|
| MSP430FR5729RHA | VQFN-40 package (6 mm × 6 mm), 32 I/O pins vs. DA's 30; identical FRAM, ADC, and peripheral set. | Better thermal performance and higher I/O count for PCBs with space for QFN; requires reflow-compatible layout. | Select when board area allows VQFN and additional GPIOs are needed for expansion headers or parallel sensor interfaces. |
| MSP430FR5725IDA | 8KB FRAM (vs. 16KB), same TSSOP-38 package, identical peripherals and power specs. | Suitable for cost-sensitive designs with smaller firmware footprint and less data logging requirement. | Choose when application firmware fits in 8KB and historical data retention depth is ≤7 days - reduces BOM cost without sacrificing low-power behavior. |
Compared with MSP430FR5729RHA, the MSP430FR5729IDA offers identical functionality in a through-hole-friendly TSSOP package ideal for prototyping and medium-volume production; versus MSP430FR5725IDA, it doubles nonvolatile storage for extended edge analytics and firmware resilience without increasing power or pin count.
Availability
MSP430FR5729IDA is available at Aetrix Electronics and suitable for smart metering, industrial monitoring, and wireless sensor node applications requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for MSP430FR5729IDA 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 MSP430FR57xx family was designed specifically for ultra-low-power sensing and system management in building automation, smart grid infrastructure, and industrial IoT endpoints where battery life and memory reliability are critical.
FAQ
What is the maximum operating frequency of the MSP430FR5729IDA?
The MSP430FR5729IDA supports a maximum system clock frequency of 8 MHz, achieved via its factory-trimmed DCO oscillator or external HFXT crystal. This frequency is fully supported across the entire specified voltage range (2.0 V to 3.6 V) and temperature range (–40°C to 85°C), enabling deterministic real-time execution for time-critical sensor fusion tasks without dynamic voltage scaling.
Does the MSP430FR5729IDA include hardware encryption or secure boot features?
No, the MSP430FR5729IDA does not integrate hardware cryptographic accelerators or secure boot circuitry. Its security model relies on software-based approaches and the Memory Protection Unit (MPU) to restrict code and data access. For applications requiring AES-128 or SHA-256 acceleration, consider the MSP430FR59xx or MSP430FR69xx families, which add dedicated crypto modules while retaining FRAM and ultra-low-power operation.
Can the MSP430FR5729IDA operate from a single 1.8-V supply?
No, the MSP430FR5729IDA requires a minimum supply voltage of 2.0 V per its Absolute Maximum Ratings and Recommended Operating Conditions. Operation below 2.0 V may result in undefined behavior, including FRAM write corruption, peripheral malfunction, or failure to exit low-power modes. For 1.8-V systems, evaluate the MSP430FR2355 or MSP430FR2633, which are rated down to 1.8 V.
How many I²C slave addresses does the eUSCI_B0 module support on the MSP430FR5729IDA?
The eUSCI_B0 module on the MSP430FR5729IDA supports up to seven programmable 7-bit I²C slave addresses, configurable via the UCBxI2COA0 and UCBxI2COA1 registers. This enables the MSP430FR5729IDA to act as multiple virtual devices on the same I²C bus - for example, presenting separate addresses for sensor data, configuration registers, and firmware update control - without external address translation logic.
Is the MSP430FR5729IDA pin-compatible with other devices in the MSP430FR57xx family?
Yes, the MSP430FR5729IDA shares identical pinout and electrical characteristics with MSP430FR5721IDA, MSP430FR5723IDA, MSP430FR5725IDA, and MSP430FR5727IDA in the TSSOP-38 (DA) package. This allows drop-in replacement for design reuse - for example, upgrading from 4KB to 16KB FRAM without PCB revision - provided peripheral usage aligns with the target device's feature set (e.g., ADC channel count, timer instances).
MSP430FR5729IDA 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:
- 8MHz
- 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:
MSP430FR5729IDA FAQ
1.How can I place an order for MSP430FR5729IDA through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5729IDA 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 MSP430FR5729IDA reliable?
The price and inventory of MSP430FR5729IDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5729IDA is usually 5 days.
3.What payment methods are accepted for MSP430FR5729IDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5729IDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5729IDA?
MSP430FR5729IDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5729IDA 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 MSP430FR5729IDA?
For technical support, including MSP430FR5729IDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5729IDA requirements.
6.How does Aetrix verify that MSP430FR5729IDA is sourced from the original manufacturer or authorized distributors?
All MSP430FR5729IDA 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 MSP430FR5729IDA meets industry standards.
7.What is the process for return or replacement of MSP430FR5729IDA?
All MSP430FR5729IDA units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5729IDA, 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 MSP430FR5729IDA part is unused and in its original packaging.
Return procedure for MSP430FR5729IDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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