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Texas Instruments MSP430G2101IRSA16T
- Part No.:
- MSP430G2101IRSA16T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2101IRSA16T.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MSP430G2101IRSA16T 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, and operation across 1.8 V–3.6 V. It delivers 220 µA active current at 1 MHz/2.2 V, 0.5 µA standby, and 0.1 µA off-mode (RAM retention), targeting battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430G2101IRSA16T datasheet, MSP430G2101IRSA16T pinout, MSP430G2101IRSA16T application, or MSP430G2101IRSA16T equivalent, this page provides verified technical context, validated pin functions, confirmed low-power operating modes, and real-world use cases for embedded sensing and control systems requiring sub-1 µs wake-up and robust brownout protection.
Technical Context
The MSP430G2101IRSA16T implements a 16-bit RISC CPU with 16 general-purpose registers and constant generators for high code efficiency. Its clock system integrates a digitally controlled oscillator (DCO), internal low-frequency oscillator (VLO), and external 32-kHz crystal support-enabling configurable ACLK, MCLK, and SMCLK domains.
It supports five software-selectable low-power modes (LPM0–LPM4), with LPM4 drawing only 0.1 µA at 2.2 V and enabling ultra-long battery life. The device includes Spy-Bi-Wire on-chip emulation, programmable security fuse, and brownout detection-but excludes Comparator_A+, distinguishing it from the G2x11 family variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; enables deterministic timing-critical firmware execution. |
| Flash / RAM | 1 kB flash memory (512-byte segments) + 128 B RAM; sufficient for compact sensor firmware with calibration data storage. |
| Supply Voltage | 1.8 V to 3.6 V; compatible with single-cell Li-ion, alkaline, or coin-cell power sources without regulation. |
| Active Current | 220 µA at 1 MHz / 2.2 V; allows continuous 1 kHz sampling in battery-operated devices for >1 year on 220 mAh. |
| Low-Power Modes | LPM4 draws 0.1 µA (2.2 V); retains RAM while disabling all clocks-ideal for long-duration sleep between sensor events. |
| Wake-Up Time | <1 µs from LPM4 to active mode via DCO; meets strict real-time response requirements in wake-on-event systems. |
| I/O Pins | 10 GPIO (P1.0–P1.7, P2.6–P2.7); all support interrupt-on-edge and individually configurable pullup/pulldown resistors. |
Pinout & Package
Package: 16-pin QFN (RSA), 3 mm × 3 mm, exposed thermal pad (recommended to connect to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 / DVCC | Power supply input | Primary VCC connection; must be decoupled locally with 100 nF ceramic capacitor. |
| 14 / DVSS | Ground reference | Main digital ground; connects to QFN thermal pad for optimal thermal and EMI performance. |
| 10 / RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset input; also serves as bidirectional Spy-Bi-Wire data line for programming and debugging. |
| 11 / TEST/SBWTCK | Debug clock input | Input for Spy-Bi-Wire clock; used during programming and JTAG fuse configuration. |
| 12 / XOUT/P2.7 | Oscillator output / GPIO | Crystal oscillator output or general-purpose I/O; requires external load capacitance when used with 32-kHz crystal. |
| 13 / XIN/P2.6/TA0.1 | Oscillator input / timer output | Crystal oscillator input or Timer_A output channel 1; dual-function pin shared with peripheral signal. |
| P1.0–P1.7 | General-purpose I/O | Eight-bit port with interrupt capability, edge select, and programmable pullup/pulldown; supports analog input only on G2x11 variants (not applicable here). |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | 0.1 µA LPM4 current enables multi-year battery life in wireless sensor endpoints without duty cycling. |
| Fast wake-up from LPM4 | <1 µs transition using integrated DCO eliminates wake-up latency penalties in event-driven applications. |
| On-chip debug interface | Spy-Bi-Wire (2-wire) reduces PCB footprint vs. full JTAG and supports in-system programming without external voltage. |
| Programmable security fuse | Prevents unauthorized read-out of flash contents-critical for firmware IP protection in commercial deployments. |
| Brownout detector | Ensures reliable reset during power ramp-up/down; avoids undefined state or corrupted memory writes below 1.8 V. |
Applications
| Smart Meter Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered gas meter measuring flow rate via pulse counting and transmitting data hourly via LPWAN. IC Role / Device Role / Timing Role: Primary controller executing sensor polling, pulse accumulation, RTC-based scheduling, and low-power radio interface management. Use Value: 0.1 µA LPM4 current extends 2-AA battery life beyond 10 years; sub-1 µs wake-up ensures precise pulse capture timing. |
Use Scenario: Wearable pulse oximeter acquiring SpO₂ and heart rate, storing 24-hour trends, and syncing via BLE. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling, LED driver timing, flash logging, and BLE stack coordination. Use Value: 1.8 V minimum supply enables direct coin-cell (CR2032) operation; 10 GPIO support dedicated LED/analog/sensor interfaces. |
| Industrial Temperature Logger | Asset Tracking Beacon |
|
Use Scenario: Encapsulated environmental logger recording temperature/humidity every 5 minutes and retaining data during power loss. IC Role / Device Role / Timing Role: Data acquisition controller with RTC, flash logging, and brownout-safe write sequencing. Use Value: Brownout detector prevents flash corruption during voltage sag; 128 B RAM preserves critical state across power interruptions. |
Use Scenario: GPS-denied indoor asset tag reporting location via RSSI triangulation and motion-triggered wake-up. IC Role / Device Role / Timing Role: Low-duty-cycle supervisor activating sensors and radio only on accelerometer interrupt or scheduled interval. Use Value: Five configurable low-power modes allow fine-grained energy budgeting-LPM3 (0.7 µA) used for RTC sleep, LPM4 for deep idle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultralow-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2201IRSA16 | 2 kB flash, same 128 B RAM, identical package and pinout; adds second Timer_A capture/compare register. | Supports dual-input capture (e.g., quadrature encoder) or additional PWM channel not available on MSP430G2101IRSA16T. | Select when firmware growth exceeds 1 kB or dual-timer functionality is required; no PCB change needed. |
| MSP430FR2111IPW14 | Ferroelectric RAM (FRAM) instead of flash; 1 kB FRAM + 128 B RAM; TSSOP-14 package (14-pin, not QFN). | Enables near-instantaneous nonvolatile writes and unlimited endurance-ideal for frequent data logging where flash wear-out is a concern. | Choose for high-write-cycle applications; requires PCB redesign due to different package and pin count. |
Compared with MSP430G2201IRSA16, the MSP430G2101IRSA16T offers lower cost and smaller code footprint for fixed-function designs; versus MSP430FR2111IPW14, it trades FRAM endurance for QFN space savings and flash-based security features like programmable code protection.
Availability
MSP430G2101IRSA16T is available at Aetrix Electronics and suitable for smart meter sensor nodes, portable medical monitors, and industrial temperature loggers requiring stable component supply and long-term lifecycle support.
Supply support for MSP430G2101IRSA16T 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 over 90 years of innovation in low-power design.
The MSP430G2xx family targets cost-sensitive, battery-operated applications demanding ultralow power, integrated peripherals, and rapid time-to-market-designed specifically for sensor interfacing, metering, and portable instrumentation.
FAQ
What is the maximum operating frequency of the MSP430G2101IRSA16T?
The MSP430G2101IRSA16T supports up to 16 MHz MCLK at VCC ≥ 3.3 V with 50% ±10% duty cycle. At 2.2 V, maximum frequency is limited to 6 MHz per TI's recommended operating conditions. This scalability allows designers to trade performance for power based on application needs while maintaining deterministic timing behavior across all supported frequencies.
Does the MSP430G2101IRSA16T include an analog comparator?
No, the MSP430G2101IRSA16T does not include Comparator_A+. It belongs to the G2x01 series, which omits the analog comparator module present in G2x11 variants (e.g., MSP430G2111). This simplifies the BOM and reduces cost for purely digital control or sensor-readout applications where external comparators or ADC-based threshold detection are used.
What debug interface does the MSP430G2101IRSA16T support?
The MSP430G2101IRSA16T uses the 2-wire Spy-Bi-Wire (SBW) interface via pins RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This eliminates the need for a 4-wire JTAG header, reduces PCB layout complexity, and enables in-system programming without external programming voltage-fully compatible with TI's MSP-FET and LaunchPad development tools.
Can the MSP430G2101IRSA16T operate from a single 1.8 V supply?
Yes, the MSP430G2101IRSA16T is fully specified to operate from 1.8 V to 3.6 V. At 1.8 V, it achieves 6 MHz maximum MCLK frequency and maintains full functionality-including flash programming (with minimum 2.2 V required only during erase/write cycles), RAM retention, and all low-power modes-making it ideal for direct connection to single-cell lithium or alkaline batteries.
How many GPIO pins does the MSP430G2101IRSA16T provide?
The MSP430G2101IRSA16T provides 10 GPIO pins: Port 1 (P1.0–P1.7) supplies eight programmable I/O lines, and Port 2 (P2.6–P2.7) adds two more. All 10 pins support interrupt-on-edge, individually configurable pullup/pulldown resistors, and peripheral multiplexing-including Timer_A outputs and crystal oscillator connections-without requiring external components.
MSP430G2101IRSA16T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-VQFN Exposed Pad
- Series:
- MSP430G2xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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:
MSP430G2101IRSA16T FAQ
1.How can I place an order for MSP430G2101IRSA16T through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2101IRSA16T 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 MSP430G2101IRSA16T reliable?
The price and inventory of MSP430G2101IRSA16T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2101IRSA16T is usually 5 days.
3.What payment methods are accepted for MSP430G2101IRSA16T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2101IRSA16T transactions.
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4.How is shipping managed for MSP430G2101IRSA16T?
MSP430G2101IRSA16T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2101IRSA16T 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 MSP430G2101IRSA16T?
For technical support, including MSP430G2101IRSA16T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2101IRSA16T requirements.
6.How does Aetrix verify that MSP430G2101IRSA16T is sourced from the original manufacturer or authorized distributors?
All MSP430G2101IRSA16T 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 MSP430G2101IRSA16T meets industry standards.
7.What is the process for return or replacement of MSP430G2101IRSA16T?
All MSP430G2101IRSA16T units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2101IRSA16T, 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 MSP430G2101IRSA16T part is unused and in its original packaging.
Return procedure for MSP430G2101IRSA16T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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