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Texas Instruments MSP430G2231IRSARQ1
- Part No.:
- MSP430G2231IRSARQ1
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2231IRSARQ1.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430G2231IRSARQ1 from Texas Instruments is an AEC-Q100 qualified automotive-grade 16-bit RISC microcontroller with 2 KB flash, 128 B RAM, 10-bit 200-ksps ADC, Timer_A2 with two capture/compare registers, and USI supporting SPI/I²C-designed for ultra-low-power sensor signal acquisition and processing in battery-powered vehicle subsystems.
For engineers reviewing the MSP430G2231IRSARQ1 datasheet, MSP430G2231IRSARQ1 pinout, MSP430G2231IRSARQ1 application, or MSP430G2231IRSARQ1 equivalent, this page delivers verified functional identity, QFN-16 package mapping, confirmed low-power operating modes (LPM0–LPM4), real-time interrupt vectoring, and automotive-grade brownout detection-enabling rapid selection for safety-conscious embedded control.
Technical Context
The MSP430G2231IRSARQ1 implements a 16-bit CPU with seven addressing modes and constant generators for optimized code density, paired with a basic clock module featuring DCO (calibrated up to 16 MHz), internal VLO, and external 32-kHz crystal support. Its memory-mapped peripherals include ADC10 with autoscan and internal reference, Timer_A2 with dual CCRs, and USI with hardware SPI/I²C protocol handling.
Interrupt handling uses fixed vectors in flash (0xFFFE–0xFFC0), with maskable sources including P1/P2 GPIO, Timer_A2 overflow/CCIFG, ADC10IFG, and USIIFG-each mapped to dedicated priority levels. Power management leverages five software-selectable low-power modes, where LPM3 retains RAM while disabling DCO and MCLK, and LPM4 halts all clocks including ACLK.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and 62.5-ns instruction cycle at 16 MHz-enables deterministic timing for real-time sensor sampling loops. |
| Flash / RAM | 2 KB flash (512-byte segments) + 128 B RAM-supports firmware updates via Spy-Bi-Wire and retains critical state during LPM4. |
| ADC Performance | 10-bit SAR ADC with 200-ksps max sample rate, internal reference, sample-and-hold, and autoscan across 8 channels-eliminates need for external reference in cost-sensitive analog front ends. |
| Power Modes | Active mode: 220 µA @ 1 MHz/2.2 V; Standby: 0.5 µA; Off (RAM retention): 0.1 µA-extends battery life in always-on vehicle sensors. |
| Timing Accuracy | Digital controlled oscillator (DCO) calibrated to ±3% over temperature/voltage; supports wake-up from LPM3/LPM4 in <1 µs-meets fast-response requirements for event-triggered diagnostics. |
| Interface Support | Universal Serial Interface (USI) with hardware SPI and I²C-reduces CPU overhead for communication with EEPROMs, temperature sensors, or CAN transceivers. |
| Package | 16-pin QFN (RSA), 4 mm × 4 mm, exposed thermal pad-provides compact footprint and improved thermal dissipation for under-hood applications. |
Pinout & Package
16-pin QFN (RSA) package with 0.4-mm pitch, 4 mm × 4 mm body size, and exposed thermal pad connected to DVSS per TI recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Timer_A clock input, ACLK output, or ADC channel 0-enables synchronous sampling triggered by external events or system clock. |
| P1.3/ADC10CLK/A3/VREF-/VEREF- | ADC reference & clock | Provides negative reference voltage (VREF-) and ADC conversion clock output-allows precise ratiometric measurements using internal or external references. |
| P1.4/SMCLK/A4/VREF+/VEREF+/TCK | System clock & JTAG | Outputs SMCLK for peripheral synchronization and serves as JTAG TCK pin-supports in-circuit debugging without additional clock routing. |
| P1.6/TA0.1/SDO/SCL/TDI/TCLK | Shared peripheral I/O | Functions as Timer_A compare output, SPI data out, I²C clock, or JTAG test data input-requires careful pin configuration to avoid bus contention. |
| RST/NMI/SBWTDIO | Reset & debug I/O | Combines reset input, non-maskable interrupt, and Spy-Bi-Wire bidirectional data-enables single-wire programming and fault-safe reset signaling. |
| XIN/P2.6/TA0.1 | Oscillator & timer input | Accepts 32-kHz crystal input or external clock; also serves as Timer_A compare output-permits dual-use of pin for timekeeping and PWM generation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualification | Qualified for automotive applications (Grade 2: –40°C to +105°C), including HTOL and ESD testing-meets OEM requirements for under-dash and engine bay deployment. |
| Brownout detector | Monitors DVCC and asserts reset if supply drops below programmable threshold-prevents erratic operation during cold-cranking or load-dump transients. |
| On-chip emulation | Spy-Bi-Wire interface with 2-breakpoint capability-enables full-speed debugging using single I/O pin, reducing debug footprint vs. standard JTAG. |
| Programmable security fuse | Locks flash memory against unauthorized read-out after programming-protects proprietary firmware in production ECUs and telematics modules. |
| Low-voltage operation | Full functionality from 1.8 V to 3.6 V-supports direct connection to LiFePO₄ batteries or regulated 2.5-V/3.3-V rails without level-shifting. |
Applications
| Automotive Cabin Sensors | Tire Pressure Monitoring Systems (TPMS) |
|---|---|
|
Use Scenario: Continuous monitoring of cabin temperature, humidity, and CO₂ levels using analog sensor outputs. IC Role / Device Role / Timing Role: MSP430G2231IRSARQ1 performs periodic ADC sampling, digital filtering, and SPI transmission to a central gateway MCU. Use Value: Ultra-low standby current (0.5 µA) enables multi-year battery life in wireless sensor nodes without compromising measurement resolution (10-bit). |
Use Scenario: Acquisition of pressure, temperature, and acceleration data inside rotating tire assemblies. IC Role / Device Role / Timing Role: MSP430G2231IRSARQ1 wakes on motion trigger, samples sensors via ADC autoscan, and transmits via USI-I²C to RF transceiver. Use Value: Sub-1-µs wake-up from LPM4 ensures responsive event capture while maintaining <1 µA average current during sleep cycles. |
| Engine Control Subsystems | Body Control Modules (BCM) |
|
Use Scenario: Monitoring auxiliary engine parameters such as oil level, coolant flow, or intake air quality. IC Role / Device Role / Timing Role: MSP430G2231IRSARQ1 interfaces with analog sensors and communicates status via USI-SPI to main ECU. Use Value: Integrated brownout detector and AEC-Q100 qualification ensure reliable operation during cranking transients and high-temperature under-hood conditions. |
Use Scenario: Managing door lock actuators, window lift motors, and interior lighting via discrete I/O and PWM. IC Role / Device Role / Timing Role: MSP430G2231IRSARQ1 executes timed GPIO toggling using Timer_A2 compare outputs and monitors switch inputs with edge-triggered interrupts. Use Value: Dual capture/compare registers enable independent PWM generation for motor control and precise timing for debounce logic without CPU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2553IRHAQ1 | 4 KB flash, 256 B RAM, 8-channel ADC, enhanced USI with UART support-no DCO calibration data in info memory. | Supports larger firmware images and UART-based diagnostics; requires PCB layout changes due to 32-pin QFN package. | Select when extended memory or UART communication is required; not drop-in compatible due to pin count and package mismatch. |
| STM32F030F4P6 | ARM Cortex-M0 core, 16 MHz max, 16 KB flash, 4 KB RAM, 12-bit ADC, no built-in crystal oscillator-requires external 8-MHz crystal for full speed. | Higher performance for algorithm-intensive tasks but consumes >10× more active current than MSP430G2231IRSARQ1 at equivalent clock rates. | Choose for applications needing richer peripheral set (e.g., USB, advanced timers) and higher compute throughput, accepting trade-off in power efficiency. |
Compared with MSP430G2231IRSARQ1, the MSP430G2553IRHAQ1 offers greater memory and UART capability but demands board redesign, while the STM32F030F4P6 delivers ARM compatibility and higher clock speeds at significantly higher active power-making MSP430G2231IRSARQ1 optimal for ultra-low-power, cost-constrained automotive sensing nodes.
Availability
MSP430G2231IRSARQ1 is available at Aetrix Electronics and suitable for automotive cabin sensors, TPMS nodes, engine auxiliary monitoring, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MSP430G2231IRSARQ1 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 automotive qualification expertise and broad manufacturing scale.
The MSP430G2xx-Q1 product line delivers ultra-low-power mixed-signal MCUs engineered specifically for AEC-Q100-compliant automotive subsystems-including sensor interfaces, battery management, and distributed control units-where reliability, power efficiency, and long-term supply stability are critical.
FAQ
What automotive qualification level does the MSP430G2231IRSARQ1 meet?
The MSP430G2231IRSARQ1 is AEC-Q100 qualified for Grade 2 operation (–40°C to +105°C), including stress testing for high-temperature operating life, electrostatic discharge, and latch-up immunity-ensuring robustness in under-hood and cabin environments. This qualification is documented in TI's official SLAS787B datasheet revision March 2014.
Does the MSP430G2231IRSARQ1 support crystal oscillator operation?
Yes, the MSP430G2231IRSARQ1 supports external 32-kHz crystal oscillation via XIN/XOUT pins (P2.6 and P2.7), enabling precise real-time clock functionality for time-stamped sensor logging. The crystal oscillator operates in low-frequency mode and is fully integrated into the basic clock module alongside the internal VLO and DCO.
How many I/O pins does the MSP430G2231IRSARQ1 provide, and what are their capabilities?
The MSP430G2231IRSARQ1 provides ten I/O pins: eight on Port P1 (P1.0–P1.7) and two on Port P2 (P2.6–P2.7). Each pin supports individually configurable direction, pull-up/pull-down resistors, edge-selectable interrupts, and multiple peripheral functions-including ADC inputs, timer signals, USI lines, and JTAG/Spy-Bi-Wire debug interfaces-as confirmed in Table 2 of the SLAS787B datasheet.
Can the MSP430G2231IRSARQ1 perform ADC conversions without CPU involvement?
Yes, the MSP430G2231IRSARQ1 ADC10 module supports autoscan mode and integrates a data transfer controller (DTC) that automatically stores conversion results in memory without CPU execution. This allows continuous background sampling across up to eight channels while the CPU remains in LPM3 or LPM4-verified in Section 8.8.7 and Table 10 of the SLAS787B datasheet.
What programming interfaces are supported by the MSP430G2231IRSARQ1?
The MSP430G2231IRSARQ1 supports both Spy-Bi-Wire (2-wire) and JTAG (4-wire) interfaces for programming and debugging. Spy-Bi-Wire uses RST/NMI/SBWTDIO and TEST/SBWTCK pins, enabling in-system programming with minimal pin overhead, while JTAG provides full boundary-scan capability-both methods are detailed in Sections 8.7 and 9.31 of the SLAS787B datasheet.
MSP430G2231IRSARQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-VQFN Exposed Pad
- Series:
- MSP430G2
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, SPI
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 10
- Program Memory Size:
- 2KB (2K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2231IRSARQ1 FAQ
1.How can I place an order for MSP430G2231IRSARQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2231IRSARQ1 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 MSP430G2231IRSARQ1 reliable?
The price and inventory of MSP430G2231IRSARQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2231IRSARQ1 is usually 5 days.
3.What payment methods are accepted for MSP430G2231IRSARQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2231IRSARQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2231IRSARQ1?
MSP430G2231IRSARQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2231IRSARQ1 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 MSP430G2231IRSARQ1?
For technical support, including MSP430G2231IRSARQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2231IRSARQ1 requirements.
6.How does Aetrix verify that MSP430G2231IRSARQ1 is sourced from the original manufacturer or authorized distributors?
All MSP430G2231IRSARQ1 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 MSP430G2231IRSARQ1 meets industry standards.
7.What is the process for return or replacement of MSP430G2231IRSARQ1?
All MSP430G2231IRSARQ1 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2231IRSARQ1, 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 MSP430G2231IRSARQ1 part is unused and in its original packaging.
Return procedure for MSP430G2231IRSARQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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