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Texas Instruments MSP430F2111IDW
- Part No.:
- MSP430F2111IDW
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MSP430F2111IDW.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:120
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Product details
Overview
MSP430F2111IDW from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 2KB+256B flash memory, 128B RAM, a 16-bit Timer_A with three capture/compare registers, and an on-chip analog comparator for slope A/D conversion. It operates from 1.8 V to 3.6 V and supports active-mode current of 250 μA at 1 MHz and 2.2 V - ideal for battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F2111IDW datasheet, MSP430F2111IDW pinout, MSP430F2111IDW application, or MSP430F2111IDW equivalent, key selection criteria include its 20-pin DW (SOWB) package, integrated DCO with ±1% calibration, brownout detection, JTAG-based on-chip emulation, and support for ultra-fast wake-up (<1 μs) from standby mode in energy-constrained embedded designs.
Technical Context
The MSP430F2111IDW implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its basic clock module integrates a digitally controlled oscillator (DCO), 32-kHz crystal input (XIN/XOUT), and high-frequency crystal support up to 16 MHz - all configurable via BCSCTL registers.
It features two 8-bit I/O ports (P1 and P2) with individually programmable pullup/pulldown resistors, edge-selectable interrupts, and shared functionality including Timer_A signals (TA0–TA2), comparator inputs (CA0–CA7), and JTAG test pins (TCK/TMS/TDI/TDO). The comparator_A+ module enables analog signal compare or slope ADC without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 62.5-ns instruction cycle time - enables deterministic real-time control and compact firmware. |
| Memory | 2KB + 256B flash (main + info memory) and 128B RAM - sufficient for standalone sensor firmware with calibration data storage in segment A. |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, alkaline, or coin-cell power sources without external regulation. |
| Active Current | 250 μA at 1 MHz / 2.2 V - allows multi-year operation on small batteries in periodic-sampling applications. |
| Low-Power Modes | LPM4 draws 0.1 μA with RAM retention - preserves state during extended sleep while minimizing quiescent drain. |
| Wake-Up Time | <1 μs from LPM3/LPM4 - ensures rapid response to external events like sensor triggers or RF wake signals. |
| Comparator | Comparator_A+ with 8-channel analog mux (CA0–CA7) and CAOUT - enables precision slope ADC or battery voltage monitoring without external op-amps. |
Pinout & Package
Package: 20-pin Plastic Small-Outline Wide Body (SOWB), suffix DW - RoHS-compliant, 7.5 mm × 12.8 mm body, 1.27 mm pitch, suitable for automated PCB assembly and space-constrained modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK | Timer_A clock input | Accepts external timing source for precise event capture or gated counting - critical for pulse-width or period measurement. |
| P1.1/TA0/TDI | Timer_A channel 0 I/O / JTAG test data input | Dual-function pin: supports PWM output or BSL serial receive; TDI enables boundary-scan programming and debug access. |
| P2.2/CAOUT/TA0/CA4 | Comparator output / Timer_A channel 0 / analog input | Delivers comparator decision logic directly to timer or GPIO; CA4 routing enables flexible analog signal routing for multi-threshold sensing. |
| XIN/P2.6/CA6 | Crystal oscillator input / comparator input | Connects to 32.768 kHz watch crystal for real-time clock; CA6 allows simultaneous use as analog reference or sensor input. |
| RST/NMI | Reset or non-maskable interrupt | Hardware reset initiation and high-priority fault handling - essential for system recovery after brownout or watchdog timeout. |
| TEST | JTAG test mode select | Enables debug interface and flash programming via MSP-FET430UIF; tied high during normal operation to disable test mode. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 μA in LPM4 with RAM retention - extends battery life in always-on sensor endpoints without compromising data integrity. |
| Integrated analog comparator | 8-input mux with internal reference and CAOUT - eliminates need for external comparators in battery-monitoring or threshold-detection circuits. |
| On-chip emulation module (EEM) | Full JTAG debug support via MSP-FET430UIF - enables real-time breakpoints, register inspection, and flash programming without external probes. |
| Digital-controlled oscillator (DCO) | Four factory-calibrated frequencies (1/8/12/16 MHz) with ±1% accuracy - provides fast, stable clocking without external crystals in cost-sensitive designs. |
| Bootstrap loader (BSL) | UART-based flash programming via P1.1/P2.2 - allows field firmware updates over simple serial interface without JTAG hardware. |
Applications
| Wireless Sensor Node | Battery-Powered Data Logger |
|---|---|
|
Use Scenario: Compact environmental sensor collecting temperature/humidity at 10-minute intervals and transmitting via sub-GHz RF link. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, low-power sleep scheduling, RF interface timing, and wake-up trigger handling. Use Value: 0.1 μA LPM4 current and <1 μs wake-up minimize average power, enabling >5-year operation on CR2032 battery. |
Use Scenario: Portable vibration monitor logging accelerometer data to internal flash during equipment runtime, then uploading via USB upon docking. IC Role / Device Role / Timing Role: Real-time data acquisition controller with RTC-driven timestamping, flash wear leveling, and USB enumeration sequencing. Use Value: Integrated 32-kHz crystal support (XIN/XOUT) and 2KB flash enable accurate time-stamping and local storage without external timing ICs or EEPROM. |
| Smart Meter Tamper Detection | Industrial Remote I/O Module |
|
Use Scenario: Utility meter detecting magnetic tampering using Hall-effect sensor and triggering secure alert transmission. IC Role / Device Role / Timing Role: Analog front-end processor comparing sensor output against calibrated thresholds using Comparator_A+ and initiating secure communication sequence. Use Value: Slope A/D capability of Comparator_A+ replaces external ADC, reducing BOM count and enabling sub-μA continuous monitoring. |
Use Scenario: DIN-rail mounted module converting 4–20 mA analog inputs to Modbus RTU over RS-485 for PLC integration. IC Role / Device Role / Timing Role: Signal conditioning and protocol translation engine performing analog scaling, CRC calculation, and UART-to-RS485 timing control. Use Value: 16-bit Timer_A with capture/compare registers ensures precise baud rate generation and pulse-width modulation for isolated power control outputs. |
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 |
|---|---|---|---|
| MSP430F2121IDW | 4KB+256B flash, same 128B RAM and peripherals - adds 2KB program space for larger firmware or bootloader + application partitioning. | Suitable where firmware complexity exceeds 2KB or dual-bank update capability is required. | Select when future firmware growth or field-upgrade safety margins demand extra flash capacity. |
| MSP430G2553IPW28 | 2KB flash, 256B RAM, enhanced USCI (UART/SPI/I²C), but no factory DCO calibration - requires external crystal or software tuning. | Better serial peripheral integration, but higher design effort for clock stability and reduced analog comparator flexibility. | Prefer when UART/I²C connectivity is primary and analog comparator usage is minimal or replaceable. |
Compared with MSP430F2111IDW, the MSP430F2121IDW offers scalable flash for evolving firmware requirements, while the MSP430G2553IPW28 trades analog comparator depth and DCO accuracy for richer serial interfaces - making MSP430F2111IDW optimal for analog-centric, battery-limited sensor control where clock stability and comparator precision are critical.
Availability
MSP430F2111IDW is available at Aetrix Electronics and suitable for wireless sensor nodes, battery-powered data loggers, smart meter tamper detection, and industrial remote I/O modules requiring stable component supply across long product lifecycles.
Supply support for MSP430F2111IDW 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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in ultra-low-power design and industrial-grade reliability.
The MSP430F21x1 series targets portable measurement and sensor-edge applications - engineered for extended battery life through five low-power modes, integrated analog peripherals, and optimized 16-bit RISC architecture.
FAQ
What is the maximum operating frequency of the MSP430F2111IDW?
The MSP430F2111IDW supports a maximum system clock (MCLK) frequency of 16 MHz when VCC ≥ 3.3 V, with factory-calibrated DCO settings for 1 MHz, 8 MHz, 12 MHz, and 16 MHz. At 2.7 V, the maximum is 12 MHz, and at 1.8 V, it is limited to 6 MHz - all values specified under recommended operating conditions in the SLAS439F datasheet.
Does the MSP430F2111IDW support in-system programming without external hardware?
Yes, the MSP430F2111IDW includes a UART-based bootstrap loader (BSL) that enables in-system programming via P1.1 (TXD) and P2.2 (RXD) using only a serial interface. No JTAG debugger is required for basic firmware updates, though the BSL must be enabled and protected by a user-defined password per SLAU319 guidelines.
What package type does the MSP430F2111IDW use, and is it RoHS-compliant?
The MSP430F2111IDW uses the 20-pin Plastic Small-Outline Wide Body (SOWB) package, designated by the DW suffix. It is RoHS-compliant, lead-free, and qualified for industrial temperature range (–40°C to +85°C), with JEDEC-standard reflow profile compatibility per J-STD-020.
Can the MSP430F2111IDW operate from a single 1.8 V supply?
Yes, the MSP430F2111IDW is fully specified to operate from 1.8 V to 3.6 V. At 1.8 V, it delivers up to 6 MHz MCLK performance and maintains full functionality including flash programming (with minimum 2.2 V during write/erase), comparator operation, and all low-power modes - making it suitable for single-cell lithium or alkaline battery systems.
How many I/O pins does the MSP430F2111IDW provide, and what analog functions do they support?
The MSP430F2111IDW provides 16 general-purpose I/O pins across Ports P1 and P2, each configurable as digital input/output or analog function. These support Timer_A signals (TA0–TA2), comparator inputs (CA0–CA7), crystal oscillator (XIN/XOUT), and JTAG test signals (TCK/TMS/TDI/TDO) - with up to eight analog-capable pins usable simultaneously for mixed-signal tasks.
MSP430F2111IDW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Series:
- MSP430F2xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- -
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 2KB (2K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- Slope A/D
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F2111IDW FAQ
1.How can I place an order for MSP430F2111IDW through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2111IDW 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 MSP430F2111IDW reliable?
The price and inventory of MSP430F2111IDW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2111IDW is usually 5 days.
3.What payment methods are accepted for MSP430F2111IDW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2111IDW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2111IDW?
MSP430F2111IDW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2111IDW 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 MSP430F2111IDW?
For technical support, including MSP430F2111IDW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2111IDW requirements.
6.How does Aetrix verify that MSP430F2111IDW is sourced from the original manufacturer or authorized distributors?
All MSP430F2111IDW 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 MSP430F2111IDW meets industry standards.
7.What is the process for return or replacement of MSP430F2111IDW?
All MSP430F2111IDW units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2111IDW, 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 MSP430F2111IDW part is unused and in its original packaging.
Return procedure for MSP430F2111IDW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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