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Texas Instruments MSP430G2102IRSA16T
- Part No.:
- MSP430G2102IRSA16T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2102IRSA16T.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:725
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Product details
Overview
MSP430G2102IRSA16T from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 1 kB Flash, 128 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) supporting SPI and I²C, and up to 16 capacitive-touch enabled I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and simple control systems requiring fast wake-up (<1 µs) and sub-µA standby current.
For engineers reviewing the MSP430G2102IRSA16T datasheet, MSP430G2102IRSA16T pinout, MSP430G2102IRSA16T application, or MSP430G2102IRSA16T equivalent, key selection criteria include its QFN-16 package footprint, absence of integrated ADC10 (distinguishing it from G2x32 variants), Spy-Bi-Wire debug interface, and support for five low-power modes - critical for energy-constrained embedded designs.
Technical Context
The MSP430G2102IRSA16T implements a 16-bit CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU cycle. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus LF and ACLK sources, enabling rapid transition from LPM4 to active mode in under 1 µs.
It features two 8-bit I/O ports (P1 and P2), each with individually configurable pullup/pulldown resistors, edge-selectable interrupts, and pin-oscillator enable for capacitive touch. The USI module provides hardware-level SPI and I²C protocol support without CPU intervention during transfers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generator; enables high code efficiency and deterministic timing for real-time control. |
| Memory | 1 kB Flash (512-byte segments), 128 B RAM; supports in-system programming via Spy-Bi-Wire and on-chip emulation logic. |
| Power Modes | One active mode + five software-selectable low-power modes (LPM0–LPM4); LPM4 draws only 0.1 µA with RAM retention. |
| Timer | One 16-bit Timer_A with three capture/compare registers (TA0.0/TA0.1/TA0.2); supports PWM generation, input capture, and interval timing. |
| Communication | Universal Serial Interface (USI) with SPI and I²C support; uses shared pins (P1.6/P1.7) and requires no external components for basic operation. |
| Supply Range | 1.8 V to 3.6 V; allows direct integration with single-cell Li-ion, alkaline, or coin-cell power sources without regulation overhead. |
| Wake-up Time | <1 µs from LPM4 to active mode; minimizes energy loss during event-driven sensing cycles in intermittent operation. |
Pinout & Package
Package: 16-pin QFN (RSA), 3 mm × 3 mm, 0.4 mm pitch, exposed thermal pad connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 1) | Power supply | Main digital supply voltage input (1.8–3.6 V); requires local 100 nF decoupling to DVSS. |
| P1.0/TA0CLK/ACLK/A0 (Pin 2) | Multi-function I/O | Configurable as timer clock input, auxiliary clock output, or analog input A0 - but ADC10 not present in G2102 variant. |
| P1.1/TA0.0/A1 (Pin 3) | Timer/capture I/O | Primary compare/capture channel 0; also serves as general-purpose I/O or analog input A1 (no ADC functionality in this device). |
| P1.2/TA0.1/A2 (Pin 4) | Timer/capture I/O | Compare/capture channel 1; dual-use as GPIO or analog input A2 (ADC not implemented in MSP430G2102). |
| P1.3/ADC10CLK/A3/VREF-/VEREF- (Pin 5) | Reserved function pin | Pin name reflects G2x32 family compatibility; no ADC10 or reference circuitry present - functions as GPIO only. |
| P1.4/TA0.2/SMCLK/A4/TCK (Pin 6) | Multi-function I/O | Timer channel 2, SMCLK output, JTAG test clock; usable as GPIO or peripheral signal depending on configuration. |
| P1.5/TA0.0/SCLK/A5/TMS (Pin 7) | Multi-function I/O | Timer compare output, USI clock, JTAG mode select; retains full GPIO capability when peripherals are disabled. |
| P1.6/TA0.1/SDO/SCL/A6/TDI/TCLK (Pin 8) | USI/SPI/I²C I/O | USI data output (SPI) or I²C clock (SCL); also supports JTAG test data input - requires careful pinmux selection. |
| P1.7/SDI/SDA/A7/TDO/TDI (Pin 9) | USI/SPI/I²C I/O | USI data input (SPI) or I²C data (SDA); dual JTAG TDO/TDI role; configured via port control registers. |
| P2.0–P2.5 (Pins 10–13, 14, 15) | General-purpose I/O | Six dedicated GPIO pins with individually enabled pullup/pulldown resistors and interrupt capability; no analog functions. |
| XIN/P2.6/TA0.1 (Pin 16) | Oscillator input | Crystal oscillator input or GPIO; TA0.1 alternate function available but not used for timer output in default configuration. |
| RST/NMI/SBWTDIO (Pin 10) | Reset/debug I/O | Active-low reset, non-maskable interrupt, and Spy-Bi-Wire data I/O - primary debug and programming interface. |
| TEST/SBWTCK (Pin 11) | Debug clock | Test mode select and Spy-Bi-Wire clock input; required for programming and in-circuit debugging. |
| XOUT/P2.7 (Pin 12) | Oscillator output | Crystal oscillator output or GPIO; must be left unconnected if using internal DCO only. |
| DVSS (Pin 14) | Ground reference | Digital ground return; connected to QFN thermal pad for thermal and electrical integrity. |
| AVSS/AVCC (Pins 13, 15) | Not populated | No analog peripherals present; these pins are NC (no connect) in MSP430G2102 - must be left unconnected or tied to DVSS/DVCC per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA in LPM4 (RAM retention), 0.5 µA in LPM3, 220 µA active at 1 MHz/2.2 V - extends battery life in wireless sensor endpoints. |
| Capacitive-touch I/O | Up to 16 pins support pin-oscillator-based touch detection without external components - enables cost-sensitive human-interface designs. |
| Spy-Bi-Wire debug | Two-wire JTAG-compatible interface using RST/NMI and TEST pins - reduces PCB routing complexity and eliminates need for dedicated debug header. |
| Programmable code protection | Security fuse prevents unauthorized read-out of Flash contents - protects firmware IP in production devices. |
| Integrated brownout detector | Monitors DVCC and asserts reset if voltage drops below threshold - ensures reliable startup and avoids erratic behavior during power ramp. |
Applications
| Smart Thermostat Sensor Node | Industrial Pushbutton Interface |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor collecting data every 30 seconds and transmitting via UART or RF link. IC Role / Device Role / Timing Role: Main controller managing sensor polling, sleep/wake scheduling, and serial communication - leveraging LPM4 and sub-µA retention. Use Value: 0.1 µA LPM4 current enables >5-year operation on CR2032; USI handles I²C sensor reads without CPU load. | Use Scenario: DIN-rail mounted HMI panel detecting mechanical button presses and driving LED indicators. IC Role / Device Role / Timing Role: Dedicated I/O expander and debouncing engine - using P1/P2 pins with programmable edge-triggered interrupts. Use Value: Pin-oscillator touch capability replaces mechanical switches; 16-bit Timer_A generates precise LED PWM dimming. |
| Wireless Remote Control | Low-Cost Motor Starter |
Use Scenario: IR or sub-GHz remote controlling HVAC or lighting systems with minimal BOM count. IC Role / Device Role / Timing Role: System-on-chip handling key scan, encoding, and RF modulation timing - using USI for SPI to transceiver IC. Use Value: Single-chip solution eliminates separate encoder MCU; Spy-Bi-Wire enables field firmware updates over same two pins. | Use Scenario: Fan or pump starter with overcurrent detection and soft-start sequencing in HVAC equipment. IC Role / Device Role / Timing Role: Timing and logic controller coordinating MOSFET gate drive signals and fault monitoring - using Timer_A compare outputs. Use Value: Deterministic 62.5-ns instruction cycle enables precise 100-ns PWM edge placement; 1.8 V operation supports wide-input DC-DC supplies. |
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 |
|---|---|---|---|
| MSP430G2202IRSA16 | 2 kB Flash, 256 B RAM, same peripherals and package; adds second Timer_A compare register (TA0.2) and higher memory headroom. | Better suited for firmware with bootloader, OTA updates, or expanded sensor fusion algorithms. | Select when future firmware growth or dual-timer coordination (e.g., PWM + capture) is required - no PCB change needed. |
| MSP430FR2102IPW14 | Ferroelectric RAM (FRAM) instead of Flash; 1 kB FRAM, 128 B RAM; identical I/O count and USI, but different memory endurance and write speed. | Preferred for high-write-cycle logging or frequent parameter updates where Flash wear-out is a concern. | Choose for applications needing 10¹⁴ write cycles or instant nonvolatile store - requires TSSOP-14 layout adaptation. |
Compared with MSP430G2202IRSA16, the MSP430G2102IRSA16 trades memory capacity for lower cost and smaller die size; versus MSP430FR2102IPW14, it offers proven Flash reliability and QFN-16 footprint but lacks FRAM's write endurance and speed - making it optimal for static, infrequently updated firmware in space-constrained designs.
Availability
MSP430G2102IRSA16T is available at Aetrix Electronics and suitable for smart sensor nodes, industrial HMI interfaces, wireless remotes, and motor control sequencers requiring stable component supply across long-lifecycle industrial programs.
Supply support for MSP430G2102IRSA16T 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 for industrial, automotive, and consumer markets.
The MSP430G2xx family was designed specifically for ultra-low-power, cost-sensitive embedded applications - emphasizing sub-µA sleep currents, fast wake-up, and integrated capacitive-touch I/O to reduce external component count.
FAQ
Does the MSP430G2102IRSA16T include an integrated ADC?
No, the MSP430G2102IRSA16T does not include an ADC. It belongs to the G2x02 series, which omits the ADC10 module found in G2x32 variants (e.g., MSP430G2132). Pins labeled A0–A7 retain their names for pin-compatibility but function solely as GPIO - no analog input or reference circuitry is implemented on-die in the MSP430G2102IRSA16T.
What debug interface does the MSP430G2102IRSA16T support?
The MSP430G2102IRSA16T supports Spy-Bi-Wire (SBW), a two-wire variant of JTAG using RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This interface enables full in-circuit debugging, flash programming, and boundary-scan testing without requiring a 4-pin JTAG header - reducing PCB footprint and BOM cost compared to standard JTAG.
Can the MSP430G2102IRSA16T drive capacitive touch buttons?
Yes, the MSP430G2102IRSA16T supports capacitive touch sensing on up to 16 I/O pins using its integrated pin-oscillator circuitry. Each pin can be independently enabled for touch detection without external components, making it suitable for low-cost user interfaces such as appliance control panels or remote controls - confirmed by TI's MSP430 CapTIvate™ design guides and G2x02 family documentation.
What is the maximum operating frequency of the MSP430G2102IRSA16T?
While the MSP430G2102IRSA16T's DCO is factory-calibrated at 1/8/12/16 MHz, its maximum guaranteed operating frequency is 16 MHz at VCC ≥ 2.2 V. At 1.8 V, the maximum supported frequency is 12 MHz per TI's recommended operating conditions. All timing specifications - including instruction cycle (62.5 ns at 16 MHz) and peripheral response - are validated within these voltage-frequency boundaries.
Is the MSP430G2102IRSA16T pin-compatible with other MSP430G2xx QFN-16 devices?
Yes, the MSP430G2102IRSA16T shares identical pinout and package dimensions (RSA-16) with all other MSP430G2xx QFN-16 variants, including MSP430G2202IRSA16, MSP430G2302IRSA16, and MSP430G2402IRSA16. Function mapping is consistent across the family - though peripheral availability (e.g., ADC, Timer_A channels) differs - allowing drop-in replacement where firmware and feature requirements align.
MSP430G2102IRSA16T 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:
- I2C, SPI, USI
- Peripherals:
- Brown-out Detect/Reset, DMA, 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:
MSP430G2102IRSA16T FAQ
1.How can I place an order for MSP430G2102IRSA16T through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2102IRSA16T 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 MSP430G2102IRSA16T reliable?
The price and inventory of MSP430G2102IRSA16T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2102IRSA16T is usually 5 days.
3.What payment methods are accepted for MSP430G2102IRSA16T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2102IRSA16T transactions.
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4.How is shipping managed for MSP430G2102IRSA16T?
MSP430G2102IRSA16T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2102IRSA16T 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 MSP430G2102IRSA16T?
For technical support, including MSP430G2102IRSA16T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2102IRSA16T requirements.
6.How does Aetrix verify that MSP430G2102IRSA16T is sourced from the original manufacturer or authorized distributors?
All MSP430G2102IRSA16T 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 MSP430G2102IRSA16T meets industry standards.
7.What is the process for return or replacement of MSP430G2102IRSA16T?
All MSP430G2102IRSA16T units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2102IRSA16T, 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 MSP430G2102IRSA16T part is unused and in its original packaging.
Return procedure for MSP430G2102IRSA16T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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