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Texas Instruments MSP430G2111IRSA16R
- Part No.:
- MSP430G2111IRSA16R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2111IRSA16R.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430G2111IRSA16R from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 1 kB Flash, 128 B RAM, a 16-bit Timer_A with two capture/compare registers, an on-chip analog comparator, and operation across 1.8 V–3.6 V. It delivers 220 µA active current at 1 MHz/2.2 V and wakes from standby in under 1 µs, targeting battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2111IRSA16R datasheet, MSP430G2111IRSA16R pinout, MSP430G2111IRSA16R application, or MSP430G2111IRSA16R equivalent, key selection criteria include its QFN-16 package, 10 I/O pins (8 on P1, 2 on P2), integrated comparator for slope A/D, five low-power modes, and Spy-Bi-Wire debug interface - all critical for energy-constrained embedded designs.
Technical Context
The MSP430G2111IRSA16R implements a 16-bit RISC CPU with constant generators and 16 general-purpose registers, executing instructions in one CPU cycle at up to 16 MHz. Its clock system integrates a digitally controlled oscillator (DCO), internal low-frequency oscillator (VLO), and external 32-kHz crystal support via XIN/XOUT pins.
It includes a dedicated Comparator_A+ module with eight selectable inputs (CA0–CA7) and CAOUT output, enabling analog threshold detection and slope-based ADC without external components. The Timer_A2 peripheral supports PWM generation, input capture, and interval timing with interrupt capability on overflow and compare events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and 51-instruction set; enables compact, deterministic firmware for real-time sensor control. |
| Memory | 1 kB Flash (main memory) + 256 B information memory + 128 B RAM; sufficient for standalone firmware with calibration data storage. |
| Power Consumption | 220 µA active @ 1 MHz/2.2 V; 0.5 µA standby; 0.1 µA off-mode with RAM retention - extends coin-cell battery life to years. |
| Timer | 16-bit Timer_A2 with two capture/compare registers (TA0, TA1); supports PWM, event timing, and input capture on P1.1/P1.2. |
| Comparator | Comparator_A+ with 8-channel analog input (CA0–CA7) and CAOUT output; enables battery voltage monitoring and analog signal thresholding. |
| Debug Interface | Spy-Bi-Wire (SBW) via RST/NMI and TEST pins; requires only two pins for full programming and emulation - reduces PCB footprint. |
| Operating Voltage | 1.8 V to 3.6 V supply range; compatible with single-cell Li-ion, LiFePO₄, and dual-AA alkaline systems without LDO overhead. |
Pinout & Package
Package: 16-pin QFN (RSA), 3 mm × 3 mm, 0.5 mm pitch, exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 16) | Supply voltage input | Primary power rail for core and I/O; must be decoupled locally with 100 nF ceramic capacitor. |
| DVSS (Pin 14) | Ground reference | System ground return; connect exposed pad directly to this plane for thermal and noise performance. |
| P1.0/TA0CLK/ACLK/CA0 (Pin 1) | Multi-function I/O | Configurable as timer clock input, ACLK output, or comparator positive input - enables flexible clock routing and analog sensing. |
| P1.1/TA0.0/CA1 (Pin 2) | Capture/compare & analog input | Timer_A CCI0A input or comparator channel CA1; supports edge-triggered capture or analog threshold detection. |
| P1.2/TA0.1/CA2 (Pin 3) | Capture/compare & analog input | Timer_A CCI1A input or comparator channel CA2; used for second capture point or differential analog sensing. |
| RST/NMI/SBWTDIO (Pin 9) | Reset & debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line - shared pin reduces debug footprint. |
| TEST/SBWTCK (Pin 10) | Debug clock input | Input-only Spy-Bi-Wire clock; enables in-system programming without JTAG header space. |
| XIN/P2.6/TA0.1 (Pin 12) | Clock input & I/O | Crystal oscillator input or general-purpose I/O; when used as TA0.1, provides secondary timer compare output. |
| XOUT/P2.7 (Pin 11) | Clock output | Oscillator output; must remain unconnected if internal VLO or DCO is used exclusively. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | 0.1 µA off-mode current with RAM retention enables maintenance of state during multi-year battery sleep cycles. |
| Integrated analog comparator | Eight selectable inputs (CA0–CA7) and CAOUT output allow direct battery voltage supervision or sensor zero-crossing detection without external op-amps. |
| Fast wake-up capability | <1 µs transition from LPM4 to active mode ensures timely response to external interrupts - critical for wake-on-event sensor hubs. |
| Five configurable low-power modes | LPM0–LPM4 provide granular trade-offs between clock domain activity and current draw, supporting dynamic power scaling per task. |
| On-chip programmable flash | 1 kB Flash supports field firmware updates via Spy-Bi-Wire; no external programmer required for production or field service. |
Applications
| Smart Sensor Node | Battery-Powered Metering |
|---|---|
|
Use Scenario: Compact environmental sensor node measuring temperature and humidity with periodic BLE transmission. IC Role / Device Role / Timing Role: Main controller executing sensor readout, digital filtering, and low-duty-cycle radio wake-up scheduling. Use Value: 0.5 µA standby current and sub-1 µs wake-up minimize average system power, extending CR2032 battery life beyond 3 years. |
Use Scenario: Portable water/gas meter with tamper detection and pulse counting over 10+ year deployment. IC Role / Device Role / Timing Role: Primary data acquisition unit performing analog threshold detection on flow pulses and storing cumulative counts in Flash. Use Value: Integrated Comparator_A+ eliminates external comparators; 128 B RAM retains counter state during power loss. |
| Portable Medical Monitor | Industrial Control Interface |
|
Use Scenario: Handheld pulse oximeter requiring low-noise analog front-end and real-time SpO₂ calculation. IC Role / Device Role / Timing Role: Signal processor capturing synchronized red/IR photodiode signals using Timer_A capture and comparator zero-crossing. Use Value: Dual capture/compare registers enable precise timing of LED drive and photodiode sampling windows within one timer instance. |
Use Scenario: DIN-rail mounted industrial I/O module monitoring discrete inputs and driving status LEDs. IC Role / Device Role / Timing Role: Local intelligence unit handling debounce, state machine logic, and SPI communication to host PLC. Use Value: 10 GPIO pins (8 on P1, 2 on P2) with individually configurable pullup/pulldown resistors simplify direct switch/LED interfacing without external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2211IRSA16 | 2 kB Flash, 256 B RAM, same package and peripherals; adds one additional comparator input channel (CA8). | Supports more complex firmware with larger code footprint and enhanced analog monitoring (e.g., multi-rail voltage supervision). | Select when firmware size exceeds 1 kB or additional comparator channels are needed for multi-sensor inputs. |
| MSP430G2101IRSA16 | No comparator module; identical Flash/RAM, clock system, and power specs; otherwise pin-compatible. | Targeted at purely digital control tasks where analog sensing is handled externally or omitted entirely. | Choose for cost-sensitive digital-only applications where comparator functionality is unnecessary and BOM simplification is prioritized. |
Compared with MSP430G2111IRSA16R, MSP430G2211IRSA16 offers headroom for feature expansion, while MSP430G2101IRSA16 reduces component count where analog integration is not required - both maintain identical QFN-16 layout and power behavior.
Availability
MSP430G2111IRSA16R is available at Aetrix Electronics and suitable for smart sensor nodes, battery-powered metering, and portable medical monitors requiring stable component supply and long-term lifecycle assurance.
Supply support for MSP430G2111IRSA16R 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 microcontroller innovation.
The MSP430G2xx family targets ultralow-power embedded applications - particularly portable instrumentation, sensor interfaces, and energy-harvesting systems - where extended battery life and integrated analog functionality are essential.
FAQ
What is the maximum operating frequency of the MSP430G2111IRSA16R?
The MSP430G2111IRSA16R supports a maximum MCLK frequency of 16 MHz when VCC ≥ 3.3 V and duty cycle is 50% ± 10%. At 2.7 V, the limit is 12 MHz; at 1.8 V, it is 6 MHz. These limits are defined by the DCO's electrical characteristics and ensure reliable CPU and peripheral operation across the full voltage range.
Does the MSP430G2111IRSA16R include a hardware UART or SPI peripheral?
No, the MSP430G2111IRSA16R does not integrate a hardware UART or SPI module. Communication must be implemented in software using GPIO-controlled bit-banging or via the USCI module found in higher-tier MSP430G2xx devices. Its peripheral set focuses on Timer_A, Comparator_A+, and basic clock/system control.
How many I/O pins does the MSP430G2111IRSA16R provide, and are they all individually configurable?
The MSP430G2111IRSA16R provides 10 digital I/O pins: eight on Port 1 (P1.0–P1.7) and two on Port 2 (P2.6–P2.7). Each pin is independently configurable for direction, pullup/pulldown resistor enable, interrupt edge select, and interrupt enable - enabling flexible interface design without external logic.
What debug interface does the MSP430G2111IRSA16R support, and what pins are required?
The MSP430G2111IRSA16R supports the two-wire Spy-Bi-Wire (SBW) interface using RST/NMI/SBWTDIO (Pin 9) and TEST/SBWTCK (Pin 10). This eliminates the need for a full 4-pin JTAG header, reducing PCB space and connector cost while retaining full programming, debugging, and emulation capability.
Is the MSP430G2111IRSA16R RoHS-compliant and qualified for industrial temperature range?
Yes, the MSP430G2111IRSA16R is RoHS-compliant and specified for industrial operating temperatures from –40°C to +85°C. Its absolute maximum ratings and recommended operating conditions - including supply voltage (1.8 V–3.6 V) and thermal performance - are validated across this full range per TI's production test protocols.
MSP430G2111IRSA16R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-VQFN Exposed Pad
- Series:
- MSP430G2xx
- 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:
- 1KB (1K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2111IRSA16R FAQ
1.How can I place an order for MSP430G2111IRSA16R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2111IRSA16R 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 MSP430G2111IRSA16R reliable?
The price and inventory of MSP430G2111IRSA16R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2111IRSA16R is usually 5 days.
3.What payment methods are accepted for MSP430G2111IRSA16R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2111IRSA16R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2111IRSA16R?
MSP430G2111IRSA16R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2111IRSA16R 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 MSP430G2111IRSA16R?
For technical support, including MSP430G2111IRSA16R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2111IRSA16R requirements.
6.How does Aetrix verify that MSP430G2111IRSA16R is sourced from the original manufacturer or authorized distributors?
All MSP430G2111IRSA16R 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 MSP430G2111IRSA16R meets industry standards.
7.What is the process for return or replacement of MSP430G2111IRSA16R?
All MSP430G2111IRSA16R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2111IRSA16R, 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 MSP430G2111IRSA16R part is unused and in its original packaging.
Return procedure for MSP430G2111IRSA16R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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