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Texas Instruments MSP430F2011IRSAR
- Part No.:
- MSP430F2011IRSAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430F2011IRSAR.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
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Product details
Overview
MSP430F2011IRSAR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 2KB+256B flash memory, 128B RAM, and a 16-bit Timer_A with two capture/compare registers. It operates from 1.8 V to 3.6 V, achieves active-mode current of 220 µA at 1 MHz/2.2 V, and supports sub-1-µs wake-up from standby mode. It is used in battery-powered sensor nodes requiring analog signal acquisition, low-energy computation, and compact system integration.
For engineers reviewing the MSP430F2011IRSAR datasheet, MSP430F2011IRSAR pinout, MSP430F2011IRSAR application, or MSP430F2011IRSAR equivalent, key selection criteria include its 14-pin TSSOP (PW) package, absence of integrated ADC or USI, presence of analog comparator_A+, and compatibility with Spy-Bi-Wire programming and brownout detection.
Technical Context
The MSP430F2011IRSAR belongs to the MSP430F20x1 family and implements a 16-bit RISC CPU with six general-purpose registers, constant generators, and seven addressing modes. Its basic clock module provides ACLK, SMCLK, and MCLK derived from internal DCO (calibrated to ±1% at 1/8/12/16 MHz), 32-kHz crystal, or external digital source.
It features five software-selectable low-power modes (LPM0–LPM4), on-chip emulation logic with Spy-Bi-Wire interface, and a versatile analog comparator supporting eight-channel input multiplexing, slope A/D conversion, and CAOUT output. No ADC or serial interface peripherals are integrated - distinguishing it from MSP430F20x2/x3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle time and 16 general-purpose registers |
| Memory | 2KB + 256B flash (main + info memory), 128B RAM - supports in-system programming via Spy-Bi-Wire |
| Supply Voltage | 1.8 V to 3.6 V - enables direct operation from single-cell Li-ion or two-cell alkaline batteries |
| Power Consumption | Active mode: 220 µA @ 1 MHz/2.2 V; Standby: 0.5 µA; Off mode (RAM retention): 0.1 µA |
| Wake-up Time | <1 µs from standby to active mode - critical for duty-cycled sensor sampling applications |
| Comparator | Analog Comparator_A+ with 8-channel input mux, CAOUT output, and slope A/D capability |
| Clock System | Digital Controlled Oscillator (DCO) with four factory-calibrated frequencies (1/8/12/16 MHz, ±1%) |
Pinout & Package
Package: 14-pin Plastic Small-Outline Thin (TSSOP), suffix "RSAR" denotes this variant. Pin count and layout match the PW package per TI SLAS491I.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ACLK/CA0 | Port 1 bit 0 / Timer_A clock input / Auxiliary clock output / Comparator_A+ input | Primary timer clock source; also delivers ACLK to peripherals and accepts comparator input CA0 |
| P1.1/TA0/CA1 | Port 1 bit 1 / Timer_A CCI0A input / Comparator_A+ input | Enables edge-triggered capture on TA0 and analog comparison using CA1 |
| P1.2/TA1/CA2 | Port 1 bit 2 / Timer_A CCI1A input / Comparator_A+ input | Supports second capture channel and additional comparator input CA2 |
| P1.3/CAOUT/CA3 | Port 1 bit 3 / Comparator_A+ output / Comparator_A+ input | Provides comparator result as digital output (CAOUT) or accepts CA3 as analog input |
| P1.4/SMCLK/CA4/TCK | Port 1 bit 4 / Sub-main clock output / Comparator_A+ input / JTAG test clock | Drives SMCLK to peripherals; serves dual role in debugging and analog sensing |
| P1.5/TA0/CA5/TMS | Port 1 bit 5 / Timer_A compare Out0 / Comparator_A+ input / JTAG test mode select | Delivers TA0 output signal while accepting CA5 and enabling JTAG control |
| P1.6/TA1/CA6/TDI/TCLK | Port 1 bit 6 / Timer_A compare Out1 / Comparator_A+ input / JTAG data/clock | Provides TA1 output and supports Spy-Bi-Wire programming via TDI/TCLK |
| P1.7/CAOUT/CA7/TDO/TDI | Port 1 bit 7 / Comparator_A+ output / Comparator_A+ input / JTAG data I/O | Shared comparator output and bidirectional JTAG data path (TDO/TDI selected by instruction) |
| XIN/P2.6/TA1 | Clock input / Port 2 bit 6 / Timer_A compare Out1 | Accepts 32-kHz crystal or external clock; doubles as TA1 output when not used for oscillation |
| XOUT/P2.7 | Clock output / Port 2 bit 7 | Drives crystal oscillator output; functions as general I/O if crystal not used |
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire data I/O | Single pin handles power-on reset, NMI events, and bidirectional programming data |
| TEST/SBWTCK | Test mode select / Spy-Bi-Wire clock | Activates debug/test mode and clocks Spy-Bi-Wire programming sequence |
| VCC | Supply voltage | 1.8–3.6 V main power rail for digital and analog circuitry |
| VSS | Ground reference | Common return path for all internal circuits and I/O pins |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode current with RAM retention enables multi-year battery life in intermittent-sensing systems |
| Factory-calibrated DCO | Four precision frequencies (1/8/12/16 MHz, ±1%) eliminate need for external crystal in timing-critical but cost-sensitive designs |
| On-chip analog comparator | Eight-input multiplexer with CAOUT output supports threshold detection, window comparison, and slope A/D without external components |
| Spy-Bi-Wire debug interface | Two-wire (SBWTDIO + SBWTCK) programming and emulation reduces PCB footprint and eliminates full JTAG connector |
| Code protection | Security fuse prevents unauthorized flash read-out - essential for firmware IP protection in deployed devices |
| Brownout detector | Integrated POR/BOR circuit ensures reliable reset during power ramp-up/down, preventing erratic MCU behavior |
Applications
| Temperature Sensor Node | Low-Power Smoke Detector |
|---|---|
|
Use Scenario: Battery-operated wireless node measuring ambient temperature every 30 seconds and transmitting via RF link only on significant delta change. IC Role / Device Role / Timing Role: MSP430F2011IRSAR acts as system controller and analog front-end - reads thermistor via comparator-based slope A/D, manages sleep/wake cycles, and drives RF transceiver enable line. Use Value: Sub-1-µs wake-up and 0.5 µA standby current minimize average power, extending CR2032 battery life beyond 5 years. |
Use Scenario: Standalone photoelectric smoke alarm with self-test, low-battery warning, and audible alert - no external communication required. IC Role / Device Role / Timing Role: MSP430F2011IRSAR monitors optical chamber voltage via comparator threshold detection, controls buzzer driver timing, and executes periodic self-test sequences. Use Value: Integrated comparator eliminates discrete op-amp and reference, reducing BOM count and board area while maintaining UL-certifiable response latency. |
| Industrial Proximity Switch | Portable Multimeter Front-End |
|
Use Scenario: Inductive proximity sensor for factory automation, detecting metal targets within 5 mm and driving 24 V DC output stage. IC Role / Device Role / Timing Role: MSP430F2011IRSAR conditions oscillator amplitude shift using comparator_A+, implements hysteresis logic, and controls solid-state relay driver with precise timing. Use Value: 16-bit Timer_A with capture/compare registers enables accurate pulse-width measurement of oscillator decay, improving target discrimination accuracy. |
Use Scenario: Handheld multimeter measuring DC voltage, resistance, and continuity - powered by two AAA cells with auto-ranging and hold function. IC Role / Device Role / Timing Role: MSP430F2011IRSAR performs slope A/D conversion using internal comparator and RC timing, manages LCD segment drive, and executes auto-zero calibration routines. Use Value: On-chip comparator and calibrated DCO allow high-precision analog-to-digital conversion without external ADC or crystal, lowering total solution cost. |
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 |
|---|---|---|---|
| MSP430F2001IPW | 1KB+256B flash, identical peripheral set (comparator_A+, Timer_A, Spy-Bi-Wire), same 14-pin TSSOP package | Limited program memory restricts complex sensor fusion or protocol stack implementation | Select when firmware size ≤1 KB and cost sensitivity outweighs future scalability needs |
| MSP430F2012IPW | Includes 10-bit 200-ksps ADC10 with 8 channels and USI (SPI/I²C); same flash/RAM and package | ADC and serial interface enable direct sensor digitization and host communication - absent in MSP430F2011IRSAR | Choose when analog signal chain requires integrated ADC or inter-device communication is required |
Compared with MSP430F2001IPW, MSP430F2011IRSAR offers double flash capacity for enhanced firmware features; compared with MSP430F2012IPW, it trades ADC and USI for lower power and simpler analog thresholding - making it optimal for comparator-centric, memory-constrained, and cost-sensitive sensing endpoints.
Availability
MSP430F2011IRSAR is available at Aetrix Electronics and suitable for battery-powered sensor nodes, industrial proximity switches, portable test equipment, and safety-critical smoke detectors requiring stable component supply across long production lifecycles.
Supply support for MSP430F2011IRSAR 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 signal-chain technologies.
The MSP430F20xx series was designed specifically for ultra-low-power, cost-sensitive, space-constrained embedded sensing applications - prioritizing sub-µA standby, fast wake-up, and integrated analog functionality over communication peripherals.
FAQ
What is the maximum operating frequency of the MSP430F2011IRSAR?
The MSP430F2011IRSAR supports a digitally controlled oscillator (DCO) with four factory-calibrated frequencies: 1 MHz, 8 MHz, 12 MHz, and 16 MHz - all specified to ±1% accuracy. The device can operate up to 16 MHz in active mode, enabling responsive real-time control while maintaining ultra-low power consumption.
Does the MSP430F2011IRSAR include an analog-to-digital converter (ADC)?
No, the MSP430F2011IRSAR does not integrate an ADC. It belongs to the MSP430F20x1 family, which features only the analog Comparator_A+ module - capable of slope A/D conversion when paired with external RC networks. For integrated ADC functionality, consider the MSP430F20x2 (10-bit ADC10) or MSP430F20x3 (16-bit SD16_A) variants.
What package type is used for the MSP430F2011IRSAR?
The MSP430F2011IRSAR uses a 14-pin Plastic Small-Outline Thin (TSSOP) package, indicated by the "RSAR" suffix. This matches the PW package option defined in TI's SLAS491I datasheet and is pin-compatible with other MSP430F20x1 devices in the same footprint, including MSP430F2001IPW and MSP430F2011IPW.
How is programming and debugging performed on the MSP430F2011IRSAR?
Programming and debugging of the MSP430F2011IRSAR is performed via the Spy-Bi-Wire (SBW) interface using two pins: SBWTDIO (RST/NMI/SBWTDIO) and SBWTCK (TEST/SBWTCK). This two-wire interface replaces full JTAG, reducing PCB routing complexity and connector cost while supporting flash programming, breakpoints, and real-time register inspection.
What distinguishes the MSP430F2011IRSAR from the MSP430F2012IRSAR?
The MSP430F2011IRSAR and MSP430F2012IRSAR share identical flash (2KB), RAM (128B), package, and core peripherals - but differ in analog subsystems. MSP430F2011IRSAR includes only Comparator_A+, whereas MSP430F2012IRSAR adds the 10-bit ADC10 and Universal Serial Interface (USI) for SPI/I²C. This makes MSP430F2011IRSAR ideal for pure threshold-detection applications with minimal BOM.
MSP430F2011IRSAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-VQFN Exposed Pad
- Series:
- MSP430F2xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- -
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 10
- 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:
MSP430F2011IRSAR FAQ
1.How can I place an order for MSP430F2011IRSAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2011IRSAR 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 MSP430F2011IRSAR reliable?
The price and inventory of MSP430F2011IRSAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2011IRSAR is usually 5 days.
3.What payment methods are accepted for MSP430F2011IRSAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2011IRSAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2011IRSAR?
MSP430F2011IRSAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2011IRSAR 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 MSP430F2011IRSAR?
For technical support, including MSP430F2011IRSAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2011IRSAR requirements.
6.How does Aetrix verify that MSP430F2011IRSAR is sourced from the original manufacturer or authorized distributors?
All MSP430F2011IRSAR 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 MSP430F2011IRSAR meets industry standards.
7.What is the process for return or replacement of MSP430F2011IRSAR?
All MSP430F2011IRSAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2011IRSAR, 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 MSP430F2011IRSAR part is unused and in its original packaging.
Return procedure for MSP430F2011IRSAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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