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Texas Instruments MSP430FR2111IRLLT
- Part No.:
- MSP430FR2111IRLLT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR2111IRLLT.pdf
- Description:
- IC MCU 16BIT 3.75KB FRAM 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,285
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Product details
Overview
MSP430FR2111IRLLT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 3.75KB nonvolatile program memory, 1KB RAM, 8-channel 10-bit ADC, and integrated eCOMP with 6-bit DAC reference. It operates from 1.8 V to 3.6 V and delivers 120 µA/MHz active current, targeting battery-powered sensing nodes such as smoke detectors and portable health monitors.
For engineers reviewing the MSP430FR2111IRLLT datasheet, MSP430FR2111IRLLT pinout, MSP430FR2111IRLLT application, or MSP430FR2111IRLLT equivalent, key selection criteria include its VQFN-24 (RLL) package, LPM3.5 RTC operation at 1 µA, capacitive touch I/O capability across all 12 GPIOs, and FRAM endurance of 1015 write cycles-critical for data-logging in energy-constrained designs.
Technical Context
The MSP430FR2111IRLLT integrates a 16-MHz digitally controlled oscillator (DCO) with FLL, on-chip 32-kHz REFO, VLO, and LFXT support for precise clocking across operating modes. Its real-time clock counter operates in LPM3.5 with external 32.768-kHz crystal at 1 µA, while shutdown (LPM4.5) draws only 34 nA without SVS.
It features a unified FRAM memory architecture supporting simultaneous read/write, ECC protection, and configurable write protection. The enhanced USCI_A module provides UART, IrDA, and SPI interfaces, and Timer_B3 includes three capture/compare registers-with CCR1 and CCR2 externally accessible for PWM or input capture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generator; enables high code efficiency and sub-10 µs wake-up from LPM to active mode. |
| FRAM Size | 3.75 KB program/data FRAM with ECC and 1015 write endurance-eliminates flash wear-out concerns in frequent logging applications. |
| RAM Size | 1 KB SRAM for runtime variables and stack; supports low-latency data buffering during sensor acquisition. |
| ADC | 8-channel, 10-bit SAR ADC with 200 ksps sample rate and internal 1.5-V reference-enables direct battery voltage and temperature monitoring. |
| Low-Power Modes | LPM3.5 (RTC + backup memory active): 1 µA; LPM4.5 (shutdown): 34 nA-extends multi-year operation on coin-cell batteries. |
| Operating Voltage | 1.8 V to 3.6 V range; minimum supply constrained by SVS thresholds-supports direct connection to single Li-ion or two alkaline cells. |
| I/O Count | 12 general-purpose I/O pins, all capacitive-touch capable-enables buttonless UI in compact consumer and industrial sensors. |
Pinout & Package
VQFN-24 package (RLL), 3 mm × 3 mm body size, 0.4 mm pitch, wettable flank terminals-designed for space-constrained PCB layouts and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 23 | A1 / P1.1 / UCA0CLK / ACLK | Analog input channel 1 or GPIO; also serves as UART clock or auxiliary clock output-flexible signal routing for mixed-signal timing control. |
| 2, 20 | A0 / P1.0 / UCA0STE / SMCLK / Veref+ | Analog input channel 0 or GPIO; dual-role as SPI slave select or system clock output; Veref+ supplies ADC reference-reduces external component count. |
| 3, 1 | TEST / SBWTCK | Spy-Bi-Wire debug clock input-enables in-system programming and real-time debugging using two-wire interface. |
| 4, 2 | RST/NMI/SBWTDIO | Reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data-single-pin debug and fault recovery path. |
| 5, 3 | DVCC | Main power supply (1.8–3.6 V); requires 4.7–10 µF bulk + 0.1 µF ceramic decoupling-ensures stable analog/digital operation under dynamic load. |
| 6, 4 | DVSS | Ground reference for digital and analog domains-shared return path mandates careful PCB partitioning to avoid noise coupling. |
| 7, 5 | P2.7 / TB0CLK / XIN | Timer_B3 clock input or low-frequency crystal oscillator input-supports external timing source for precision RTC or event counting. |
| 8, 7 | P2.6 / MCLK / XOUT | Main system clock output or crystal oscillator output-drives external circuitry or validates internal clock generation. |
| 11, 13 | P1.7 / UCA0TXD / UCA0SIMO / TB0.2 / TDO / A7 / VREF+ | UART transmit, SPI master out, timer capture/compare, JTAG test data out, analog input A7, and internal reference output-highly multiplexed pin for compact peripheral integration. |
| 16, 19 | P1.2 / UCA0RXD / UCA0SOMI / TB0TRG / C2 / A2 / Veref- | UART receive, SPI slave in, timer trigger, comparator input, analog input A2, and ADC negative reference-central node for sensor interface and communication. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 3.75 KB unified memory with ECC, 1015 write cycles, and instant write-enables reliable firmware updates and sensor data logging without erase delays. |
| Capacitive Touch I/O | All 12 GPIOs support capacitive sensing-eliminates dedicated touch controller ICs in battery-powered human-interface devices. |
| Integrated Temperature Sensor | On-die sensor calibrated for ±3°C accuracy-provides system thermal monitoring without external components. |
| eCOMP with 6-bit DAC | Comparator with programmable hysteresis and internal 6-bit DAC reference-enables precision threshold detection for analog signal conditioning. |
| Real-Time Clock (RTC) | 16-bit counter functional in LPM3.5 with 32.768-kHz crystal at 1 µA-maintains timekeeping during ultra-low-power sleep for periodic wake-up events. |
Applications
| Smoke and Heat Detectors | Portable Health Monitors |
|---|---|
|
Use Scenario: Battery-powered residential smoke alarm with CO detection and wireless alert transmission. IC Role / Device Role / Timing Role: Main system controller managing sensor fusion (optical smoke, thermistor, electrochemical CO), RTC-triggered self-test, and low-power BLE wake-up. Use Value: LPM4.5 current of 34 nA extends 10-year battery life; FRAM stores calibration data and event logs without wear-out; 12 capacitive I/Os enable tamper-sensing housing design. |
Use Scenario: Wearable fitness tracker measuring heart rate, skin temperature, and motion via optical and analog sensors. IC Role / Device Role / Timing Role: Central data acquisition unit running sensor algorithms, storing raw samples in FRAM, and synchronizing BLE packet transmission via RTC alarms. Use Value: 10-bit ADC with internal 1.5-V reference enables accurate photodiode current measurement; 1 µA LPM3.5 RTC allows hourly sync without draining coin cell; unified FRAM simplifies firmware OTA updates. |
| Appliance Battery Packs | Lighting Sensors |
|
Use Scenario: Smart power tool battery pack with fuel gauging, cell balancing, and safety cutoff. IC Role / Device Role / Timing Role: Battery management subsystem monitoring voltage, temperature, and charge cycles; triggering protection logic based on real-time thresholds. Use Value: eCOMP with DAC reference provides precise overvoltage/overtemperature trip points; FRAM endures 1015 writes for lifetime cycle counting; 1.8-V operation supports direct connection to 2S Li-ion packs. |
Use Scenario: Occupancy-aware LED lighting control using ambient light and PIR sensing in commercial buildings. IC Role / Device Role / Timing Role: Ambient light acquisition node sampling photodiode output every 5 seconds, comparing against threshold, and signaling MCU via GPIO interrupt. Use Value: 8-channel ADC supports multi-point lux measurement; capacitive I/O detects proximity for manual override; 120 µA/MHz active current minimizes self-heating impact on light sensor accuracy. |
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 |
|---|---|---|---|
| MSP430FR2111IPW16 | TSSOP-16 package (5 mm × 4.4 mm); 12 I/Os; same FRAM/RAM/ADC/peripherals but larger footprint and no wettable flanks. | Better suited for prototyping or through-hole-compatible boards; less optimal for high-density, automated assembly. | Select when board layout prioritizes hand-soldering or legacy footprint compatibility over miniaturization. |
| MSP430FR2311IRLLT | VQFN-24 package; 4 KB FRAM, 2 KB RAM, enhanced USCI (dual eUSCI_A), 16-channel ADC, and hardware CRC accelerator. | Targets more complex sensor hubs requiring higher memory, dual serial interfaces, or faster data integrity checking. | Choose when scaling beyond basic sensing-e.g., adding multiple communication protocols or extended data buffering-while retaining identical package and pinout. |
Compared with MSP430FR2111IPW16, the MSP430FR2111IRLLT reduces PCB area by 55% and enables AOI-capable solder joints; versus MSP430FR2311IRLLT, it trades memory and peripheral headroom for lower cost and power in simpler, volume-sensitive endpoints.
Availability
MSP430FR2111IRLLT is available at Aetrix Electronics and suitable for smoke detectors, portable health monitors, appliance battery packs, and lighting sensors requiring stable component supply across multi-year production cycles.
Supply support for MSP430FR2111IRLLT 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 with emphasis on reliability, energy efficiency, and system-level innovation.
The MSP430FR21xx family targets ultra-low-power sensing applications-designed to replace 8-bit MCUs and legacy MSP430G2x devices with FRAM-based data logging, extended battery life, and simplified firmware development.
FAQ
What is the maximum operating frequency of the MSP430FR2111IRLLT?
The MSP430FR2111IRLLT features a 16-MHz digitally controlled oscillator (DCO) with frequency-locked loop (FLL), enabling a maximum system clock (MCLK) of 16 MHz. This frequency is fully supported across the 1.8 V to 3.6 V supply range and is used for CPU execution, peripheral timing, and active-mode performance. The DCO's ±1% accuracy at room temperature ensures stable operation without external crystal for many timing-critical functions.
Does the MSP430FR2111IRLLT support capacitive touch sensing on all I/O pins?
Yes, the MSP430FR2111IRLLT supports capacitive touch sensing on all 12 general-purpose I/O pins. This capability is implemented in hardware via the built-in capacitive touch I/O structure, eliminating the need for external RC networks or dedicated touch controller ICs. Each pin can be configured independently for touch sensing, making the MSP430FR2111IRLLT ideal for compact, battery-powered user interfaces such as appliance controls or wearable device buttons.
What low-power modes are available on the MSP430FR2111IRLLT, and what is the current draw in LPM3.5?
The MSP430FR2111IRLLT offers multiple low-power modes including LPM3.5, where the real-time clock (RTC) counter and 32-byte backup memory remain active while the CPU and most peripherals are disabled. With a 32.768-kHz external crystal, LPM3.5 draws just 1 µA at 3 V. This mode enables precise timekeeping and periodic wake-up events-such as hourly sensor reads-while minimizing energy consumption in long-life battery applications.
Can the MSP430FR2111IRLLT operate from a single 1.8-V supply?
Yes, the MSP430FR2111IRLLT is fully specified to operate from 1.8 V to 3.6 V. At 1.8 V, it maintains full functionality-including 16-MHz DCO operation, ADC conversion, FRAM read/write, and GPIO control-as long as supply voltage remains above the SVS (supply voltage supervisor) threshold. This makes the MSP430FR2111IRLLT compatible with single-cell Li-ion, Li-polymer, or two-series alkaline battery configurations without regulation.
What development tools are officially supported for the MSP430FR2111IRLLT?
Texas Instruments officially supports the MSP-EXP430FR2311 LaunchPad™ development kit, which is hardware-compatible with the MSP430FR2111IRLLT due to shared pinout and peripheral set. Software support includes Code Composer Studio™ IDE with integrated MSP430Ware™ libraries, Energia IDE, and TI's free Uniflash programmer. Debugging is enabled via Spy-Bi-Wire using the onboard debugger or external MSP-FET430U20.
MSP430FR2111IRLLT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-VFQFN Exposed Pad
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 12
- Program Memory Size:
- 3.75KB (3.75K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR2111IRLLT FAQ
1.How can I place an order for MSP430FR2111IRLLT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2111IRLLT 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 MSP430FR2111IRLLT reliable?
The price and inventory of MSP430FR2111IRLLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2111IRLLT is usually 5 days.
3.What payment methods are accepted for MSP430FR2111IRLLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2111IRLLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2111IRLLT?
MSP430FR2111IRLLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2111IRLLT 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 MSP430FR2111IRLLT?
For technical support, including MSP430FR2111IRLLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2111IRLLT requirements.
6.How does Aetrix verify that MSP430FR2111IRLLT is sourced from the original manufacturer or authorized distributors?
All MSP430FR2111IRLLT 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 MSP430FR2111IRLLT meets industry standards.
7.What is the process for return or replacement of MSP430FR2111IRLLT?
All MSP430FR2111IRLLT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2111IRLLT, 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 MSP430FR2111IRLLT part is unused and in its original packaging.
Return procedure for MSP430FR2111IRLLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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