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Texas Instruments MSP430FR5849IDA
- Part No.:
- MSP430FR5849IDA
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR5849IDA.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:103
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Product details
Overview
MSP430FR5849IDA from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller in 38-pin TSSOP package, featuring 64KB FRAM, 2KB RAM, 12-bit ADC with 14 external channels, RTC with calendar/alarm, and dual eUSCI modules (UART/I²C/SPI). It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and data loggers.
For engineers reviewing the MSP430FR5849IDA datasheet, MSP430FR5849IDA pinout, MSP430FR5849IDA application, or MSP430FR5849IDA equivalent, key selection factors include FRAM endurance (10¹⁵ writes), LPM3.5 current (0.25 µA typical), RTC support with LFXT, and TSSOP-38 footprint compatibility for space-constrained designs.
Technical Context
The MSP430FR5849IDA implements the ULP CPUXV2 core with 16 registers and integrates a flexible clock system including DCO, VLO, and LFXT (32-kHz crystal oscillator) - but excludes HFXT, as confirmed by device family documentation. Its RTC_B module is enabled only when LFXT is used, matching the MSP430FR584x series specification.
It features five 16-bit timers (TA0–TA3, TB0), 3-channel DMA, 16-channel analog comparator, and eUSCI_A0/eUSCI_B0 peripherals supporting UART, I²C, and SPI. All I/O pins support capacitive touch sensing without external components, and memory protection includes MPU with IP encapsulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16 MHz clock - enables deterministic real-time control with low code footprint |
| FRAM Capacity | 64 KB unified nonvolatile memory - eliminates write wear-out concerns and enables fast logging at 125 ns/word |
| RAM Size | 2 KB SRAM - sufficient for stack, buffers, and real-time variables in ultra-low-power operation |
| ADC Resolution | 12-bit SAR ADC with 14 external input channels - supports precision sensor interfacing with internal reference |
| RTC Support | Real-time clock with calendar and alarm functions - requires 32-kHz LFXT crystal (LFXIN/LFXOUT pins present) |
| Low-Power Modes | LPM3.5 draws 0.25 µA typical - enables years of operation on coin-cell batteries in data-logging sleep cycles |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, Li-SOCl₂, or alkaline battery systems |
Pinout & Package
Package: 38-pin TSSOP (DA), body size 12.5 mm × 6.2 mm, lead pitch 0.65 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.1/DMAE0/RTCCLK/A0/C0/VREF-/VeREF- | Multi-function I/O | RTC calibration output, ADC channel A0, comparator C0, and negative reference source - critical for timekeeping accuracy and analog front-end design |
| PJ.4/LFXIN & PJ.5/LFXOUT | Crystal Oscillator Interface | Dedicated 32-kHz crystal connections - required for RTC_B operation and low-power timing stability |
| RST/NMI/SBWTDIO | Reset & Debug | Active-low reset with NMI capability and Spy-Bi-Wire debug interface - enables in-system programming and low-pin-count debugging |
| DVCC & DVSS / AVCC & AVSS | Power Supply | Separate digital and analog power domains - reduces noise coupling into ADC and comparator circuits |
| P1.6/TB0.3/UCB0SIMO/UCB0SDA/TA0.0 | I²C Data Line | Configurable as I²C SDA (eUSCI_B0) - supports BSL firmware updates and sensor communication over two-wire bus |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64 KB nonvolatile memory with 10¹⁵ write endurance - enables frequent sensor data logging without flash wear leveling overhead |
| Capacitive Touch I/O | All GPIO pins support touch sensing - eliminates external RC networks and reduces BOM cost in wearable and HMI applications |
| Hardware CRC16 | Dedicated 16-bit cyclic redundancy checker - accelerates firmware integrity checks and secure OTA update validation |
| EnergyTrace++™ Integration | Real-time current profiling via Spy-Bi-Wire - allows precise optimization of LPM entry/exit timing in battery-sensitive designs |
| Unified Memory Space | Single address space for code, data, and storage - simplifies linker configuration and enables dynamic code updates in FRAM |
Applications
| Metering | Energy-Harvested Sensor Nodes |
|---|---|
Use Scenario: Smart water/gas meter with pulse counting, temperature compensation, and periodic RF transmission. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing RTC-based wake-up intervals, and storing calibration data in FRAM. Use Value: 0.25 µA LPM3.5 current extends battery life beyond 10 years; FRAM enables tamper-proof event logging without write latency. | Use Scenario: Solar-powered environmental sensor node measuring temperature, humidity, and light intensity every 5 minutes. IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting regulation, sensor acquisition, and low-duty-cycle wireless transmission. Use Value: Unified FRAM stores both firmware and sensor history; RTC calendar ensures accurate timestamping across power-loss events. |
| Wearable Electronics | Data Logging |
Use Scenario: Fitness tracker with accelerometer, heart-rate monitor, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Central MCU handling motion processing, biometric sampling, and BLE packet scheduling using eUSCI_A0 UART. Use Value: Capacitive touch I/O enables buttonless UI; 2 KB RAM supports real-time sensor fusion without external memory. | Use Scenario: Industrial equipment monitoring vibration, temperature, and voltage over 72-hour capture windows. IC Role / Device Role / Timing Role: Standalone logger capturing analog waveforms at 1 kSPS using ADC12_B and storing raw samples in FRAM. Use Value: 125 ns/word FRAM write speed allows continuous streaming at full ADC resolution; no flash erase delays interrupt acquisition. |
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 |
|---|---|---|---|
| MSP430FR5848IDA | 48 KB FRAM, 2 KB RAM, same package and peripheral set - reduced nonvolatile storage capacity | Suitable where firmware + data footprint fits within 48 KB; identical power profile and pinout | Select when FRAM budget allows trade-off between code size and data retention depth |
| MSP430FR5847IDA | 32 KB FRAM, 1 KB RAM, same package - lower memory and reduced SRAM for simpler applications | Targeted at cost-sensitive, low-complexity sensor endpoints with minimal firmware requirements | Choose for basic polling-based sensors where 1 KB RAM suffices and FRAM usage is under 32 KB |
Compared with MSP430FR5848IDA and MSP430FR5847IDA, the MSP430FR5849IDA provides maximum FRAM headroom for firmware growth and long-duration data buffering while maintaining identical ultra-low-power performance and TSSOP-38 layout compatibility.
Availability
MSP430FR5849IDA is available at Aetrix Electronics and suitable for metering, energy-harvested sensor nodes, and wearable electronics requiring stable component supply and long-term industrial availability.
Supply support for MSP430FR5849IDA 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 decades of expertise in ultra-low-power microcontrollers and precision analog signal chains.
The MSP430FR58xx family is designed for energy-constrained applications demanding nonvolatile memory reliability, real-time responsiveness, and multi-year battery life - especially in metering, sensing, and portable instrumentation.
FAQ
What is the maximum operating frequency of the MSP430FR5849IDA?
The MSP430FR5849IDA supports a maximum system clock frequency of 16 MHz, achieved via its factory-trimmed DCO (Digitally Controlled Oscillator) or external high-frequency sources. However, the MSP430FR5849IDA variant is specified for LFXT-only operation (32-kHz crystal), so its high-speed execution relies on the internal DCO calibrated against LFXT - enabling full 16-MHz performance without HFXT hardware.
Does the MSP430FR5849IDA support hardware UART bootloading?
Yes, the MSP430FR5849IDA supports hardware UART bootloading via its eUSCI_A0 module. Pins P2.0 (UCA0TXD) and P2.1 (UCA0RXD) serve as BSLTX and BSLRX, respectively, enabling firmware updates over UART without requiring JTAG hardware - a key feature for field-deployed devices.
Can the MSP430FR5849IDA operate without an external crystal?
Yes, the MSP430FR5849IDA can operate using its internal VLO (Very-Low-Power Oscillator) or DCO for active-mode timing, but the RTC_B module requires the external 32-kHz LFXT crystal connected to PJ.4/LFXIN and PJ.5/LFXOUT. For applications needing calendar-based wake-up or precise timekeeping, the crystal is mandatory.
How many ADC input channels does the MSP430FR5849IDA support?
The MSP430FR5849IDA integrates the ADC12_B module with support for 14 external analog input channels (A0–A15, excluding A6 and A7 which are not routed to DA package pins) plus 2 internal references. This matches the device comparison table specifying "14 ext, 2 int ch." for MSP430FR5849 in DA package.
Is the MSP430FR5849IDA pin-compatible with other MSP430FR58xx DA-package variants?
Yes, the MSP430FR5849IDA shares identical pinout and package dimensions (38-pin TSSOP, DA) with MSP430FR5848IDA and MSP430FR5847IDA. All three variants use the same signal mapping per pin, enabling drop-in replacement within the same FRAM capacity tier - subject to software verification of memory size assumptions.
MSP430FR5849IDA 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:
- 16MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 31
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5849IDA FAQ
1.How can I place an order for MSP430FR5849IDA through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5849IDA 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 MSP430FR5849IDA reliable?
The price and inventory of MSP430FR5849IDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5849IDA is usually 5 days.
3.What payment methods are accepted for MSP430FR5849IDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5849IDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5849IDA?
MSP430FR5849IDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5849IDA 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 MSP430FR5849IDA?
For technical support, including MSP430FR5849IDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5849IDA requirements.
6.How does Aetrix verify that MSP430FR5849IDA is sourced from the original manufacturer or authorized distributors?
All MSP430FR5849IDA 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 MSP430FR5849IDA meets industry standards.
7.What is the process for return or replacement of MSP430FR5849IDA?
All MSP430FR5849IDA units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5849IDA, 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 MSP430FR5849IDA part is unused and in its original packaging.
Return procedure for MSP430FR5849IDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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