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Texas Instruments MSP430FR5849IDAR
- Part No.:
- MSP430FR5849IDAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR5849IDAR.pdf
- Description:
- IC MCU 16BIT 64KB FRAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,912
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Product details
Overview
MSP430FR5849IDAR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 64KB nonvolatile memory, 2KB RAM, 12-bit ADC (14 external channels), RTC clocked by 3.7-pF crystal, and integrated capacitive touch I/O-designed for battery-powered metering and energy-harvested sensor nodes.
For engineers reviewing the MSP430FR5849IDAR datasheet, MSP430FR5849IDAR pinout, MSP430FR5849IDAR application, or MSP430FR5849IDAR equivalent, key selection criteria include LPM3.5 current (0.25 µA typical), FRAM endurance (10¹⁵ write cycles), UART/I²C eUSCI support, LFXT-only clock system, and TSSOP-38 package compatibility.
Technical Context
The MSP430FR5849IDAR implements the CPUXV2 core with 16 registers and operates up to 16 MHz using a DCO or LFXT (32 kHz crystal only-no HFXT). Its low-power architecture supports seven LPMs, including LPM3.5 (RTC active) and LPM4.5 (shutdown at 0.02 µA), optimized for intermittent sensing and long sleep cycles.
Peripherals include dual eUSCI modules (eUSCI_A0: UART/IrDA/SPI; eUSCI_B0: I²C/SPI), five 16-bit timers (TA0–TA3, TB0), 32-bit hardware multiplier, 3-channel DMA, and a 16-channel analog comparator-all accessible via multiplexed I/O pins supporting capacitive touch without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16 MHz operation |
| FRAM Capacity | 64 KB unified nonvolatile memory-enables instant writes, eliminates erase latency, supports firmware updates without wear leveling |
| RAM Size | 2 KB SRAM for runtime variables and stack |
| ADC Resolution | 12-bit SAR ADC with internal reference, 14 external + 2 internal input channels |
| RTC Support | Real-time clock with calendar/alarm, powered by 32-kHz LFXT crystal (3.7-pF load) |
| Low-Power Modes | LPM3.5 draws 0.25 µA (typical); LPM4.5 draws 0.02 µA (typical)-critical for multi-year battery life |
| eUSCI Peripherals | eUSCI_A0 (UART/IrDA/SPI), eUSCI_B0 (I²C/SPI); UART BSL enabled on P2.0/P2.1 |
Pinout & Package
Package: TSSOP-38 (body size 12.5 mm × 6.2 mm), lead pitch 0.65 mm, exposed pad not present. Pinout validated per TI SLASE34E Rev. August 2018, Figure 4-3 and Table 4-1.
| 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, negative reference source/sink |
| P1.1/TA0.2/TA1CLK/COUT/A1/C1/VREF+/VeREF+ | Multi-function I/O | TA1 clock input, comparator output, ADC channel A1, positive reference source/sink |
| P3.0–P3.3/A12–A15/C12–C15 | Analog input group | Four dedicated ADC inputs (A12–A15) and comparator inputs (C12–C15) |
| P1.3/TA1.2/UCB0STE/A3/C3 | Multi-function I/O | eUSCI_B0 SPI slave transmit enable, ADC channel A3, comparator C3 |
| P1.4/TB0.1/UCA0STE/A4/C4 | Multi-function I/O | eUSCI_A0 SPI slave transmit enable, ADC channel A4, comparator C4 |
| RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset, non-maskable interrupt, 2-wire Spy-Bi-Wire debug interface |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 64 KB unified memory with 125 ns write speed and 10¹⁵ endurance-eliminates flash erase delays and wear management overhead |
| Ultra-Low-Power RTC | 0.25 µA typical in LPM3.5 mode with calendar/alarm-enables precise wake-up scheduling for sensor polling |
| Capacitive Touch I/O | All GPIO pins support touch sensing without external RC networks-reduces BOM cost and PCB area |
| Hardware Acceleration | 32-bit hardware multiplier and 3-channel DMA offload CPU during math-intensive or data-transfer tasks |
| Flexible Clock System | DCO + LFXT only (no HFXT)-simplifies crystal selection and reduces component count for sub-MHz timing applications |
Applications
| Smart Utility Metering | Energy-Harvested Sensor Node |
|---|---|
Use Scenario: Gas/water/electricity meter with hourly pulse logging and tamper detection. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based event logs, and maintaining real-time billing timestamps. Use Value: 64KB FRAM stores 10+ years of hourly consumption data; LPM3.5 RTC enables accurate time-stamping at 0.25 µA. | Use Scenario: Wireless temperature/humidity node powered by solar cell + supercapacitor. IC Role / Device Role / Timing Role: Sleep-wake coordinator, ADC sampler, and BLE subsystem manager (via UART bridge). Use Value: 0.02 µA LPM4.5 shutdown extends supercapacitor hold-up time; FRAM retains calibration data across power loss. |
| Wearable Health Monitor | Data Logging Beacon |
Use Scenario: Wrist-worn pulse oximeter with motion-compensated SpO₂ calculation. IC Role / Device Role / Timing Role: Analog front-end controller, capacitive touch UI handler, and low-latency FRAM buffer for raw sensor streams. Use Value: All GPIO pins support touch-enables bezel-free design; 12-bit ADC resolves photodiode signals with <1 LSB noise. | Use Scenario: Industrial asset tracker logging GPS position, temperature, and shock events every 5 minutes. IC Role / Device Role / Timing Role: Time-triggered logger with RTC alarm wakeup, FRAM circular buffer, and UART-to-LoRaWAN gateway interface. Use Value: 10¹⁵ FRAM write cycles ensure >20-year field reliability; UART BSL allows remote firmware patching over LoRa. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power FRAM microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5847IDAR | 32 KB FRAM, 1 KB RAM, same TSSOP-38 package, identical peripheral set except reduced memory | Suitable for simpler sensor nodes with smaller firmware and less logging depth | Select when code footprint and data retention requirements fit within 32 KB FRAM |
| MSP430FR5848IDAR | 48 KB FRAM, 2 KB RAM, same TSSOP-38 package and peripherals as MSP430FR5849IDAR | Drop-in replacement where full 64 KB is unnecessary but 2 KB RAM and UART BSL are required | Choose for balanced memory headroom and proven supply chain continuity |
Compared with MSP430FR5847IDAR and MSP430FR5848IDAR, the MSP430FR5849IDAR provides maximum FRAM capacity (64 KB) in the TSSOP-38 footprint-ideal for applications requiring deep firmware versioning, extended event history, or large lookup tables without external storage.
Availability
MSP430FR5849IDAR is available at Aetrix Electronics and suitable for smart utility metering, energy-harvested sensor nodes, and wearable electronics requiring stable component supply, long-term lifecycle support, and consistent FRAM performance.
Supply support for MSP430FR5849IDAR 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 company delivering analog and embedded processing solutions, with leadership in low-power microcontrollers and precision analog ICs.
The MSP430FR58xx family is designed for ultra-low-power sensing and measurement applications-leveraging FRAM to eliminate flash limitations while enabling robust, maintenance-free operation in battery- and energy-harvested systems.
FAQ
What is the maximum operating frequency of the MSP430FR5849IDAR?
The MSP430FR5849IDAR supports a maximum system clock frequency of 16 MHz, achieved using the factory-trimmed DCO oscillator or an external 32-kHz LFXT crystal with digital frequency synthesis. This frequency enables real-time signal processing in metrology and sensor fusion applications while maintaining ultra-low active-mode current (~100 µA/MHz).
Does the MSP430FR5849IDAR support high-frequency crystal oscillators (HFXT)?
No, the MSP430FR5849IDAR does not support HFXT. It is part of the MSP430FR584x series, which includes LFXT only (32 kHz crystal on PJ.4/PJ.5). HFXT capability is reserved for MSP430FR585x and MSP430FR586x variants. This simplifies board layout and reduces BOM cost for sub-MHz timing applications.
How many ADC input channels does the MSP430FR5849IDAR support?
The MSP430FR5849IDAR supports 14 external analog input channels (A0–A15 excluding A6 and A7) plus 2 internal channels (temperature sensor and VREF), for a total of 16 configurable ADC inputs. Channel mapping is fixed per pin-e.g., P1.0 = A0, P3.0 = A12-and all inputs share the same 12-bit SAR converter with programmable sample-and-hold.
What debug interface is supported by the MSP430FR5849IDAR?
The MSP430FR5849IDAR supports the 2-wire Spy-Bi-Wire (SBW) interface via TEST/SBWTCK and RST/NMI/SBWTDIO pins. This interface enables full JTAG-style debugging-including breakpoints, register inspection, and flash/FRAM programming-using standard TI debuggers like MSP-FET or LaunchPad boards, without requiring a 4-pin JTAG header.
Is the MSP430FR5849IDAR pin-compatible with other devices in the MSP430FR58xx family?
Yes, the MSP430FR5849IDAR in TSSOP-38 (DA package) shares identical pinout and signal mapping with MSP430FR5847IDAR and MSP430FR5848IDAR. This allows direct substitution within the same package variant, preserving PCB layout and firmware compatibility while scaling FRAM capacity from 32 KB to 64 KB.
MSP430FR5849IDAR 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:
- 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:
MSP430FR5849IDAR FAQ
1.How can I place an order for MSP430FR5849IDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5849IDAR 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 MSP430FR5849IDAR reliable?
The price and inventory of MSP430FR5849IDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5849IDAR is usually 5 days.
3.What payment methods are accepted for MSP430FR5849IDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5849IDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5849IDAR?
MSP430FR5849IDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5849IDAR 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 MSP430FR5849IDAR?
For technical support, including MSP430FR5849IDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5849IDAR requirements.
6.How does Aetrix verify that MSP430FR5849IDAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5849IDAR 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 MSP430FR5849IDAR meets industry standards.
7.What is the process for return or replacement of MSP430FR5849IDAR?
All MSP430FR5849IDAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5849IDAR, 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 MSP430FR5849IDAR part is unused and in its original packaging.
Return procedure for MSP430FR5849IDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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