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Texas Instruments MSP430G2231IRSARQ1 — Microcontrollers & Processors (MCU / MPU / DSP)

TI MSP430G2231IRSARQ1 16-Bit MCU, 16MHz, 2KB Flash, AEC-Q100

MPNMSP430G2231IRSARQ1
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Texas Instruments MSP430G2231IRSARQ1, Automotive AEC-Q100, 16-Bit MSP430 CPU16 MCU, 16MHz, 2KB Flash, 128 x 8 RAM, 8x10b ADC, I²C/SPI, 1.8V-3.6V, -40°C~85°C, 16-QFN (4x4), Tape & Reel.

Texas Instruments MSP430G2231IRSARQ1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MSP430G2231IRSARQ1 specifications
ParameterValue
SeriesAutomotive, AEC-Q100, MSP430G2
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed16MHz
PackageTape & Reel (TR)
RAM size128 x 8
Core size16-Bit
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
ConnectivityI²C, SPI
Number of i (O)10
Core processorMSP430 CPU16
Case16-VQFN Exposed Pad
Data convertersA/D 8x10b
Program memory size2KB (2K x 8)

Product details

2 KB Flash — sizing the firmware budget

With 2 KB of Flash, this MCU is sized for a focused control task: reading a few analog channels via the 10-bit ADC, communicating over I²C or SPI, and driving a PWM output or two. There is no room for a full RTOS or a complex protocol stack — think a dedicated sensor interface, a small actuator controller, or a simple LIN slave node. The 128 bytes of RAM handle a few variables and a modest call stack; any significant data buffering needs to be managed in Flash or streamed out over the serial interface.

Automotive AEC-Q100 qualification — the real differentiator

This is the same MSP430G2 core used in countless consumer and industrial designs, but with the added reliability screening that automotive OEMs and tier-1 suppliers require.

16-QFN package — layout and thermal notes

The 10 I/O pins plus the dedicated supply and ground pins leave limited room for external components — plan for a 100 nF decoupling capacitor close to each supply pin.

Frequently asked questions

What are the specifications of MSP430G2231IRSARQ1?

This is a 16-bit MSP430 CPU16 microcontroller running at 16 MHz. It is AEC-Q100 qualified for automotive applications.

What is the difference between MSP430G2231 and MSP430G2452?

The MSP430G2452 is a higher-density sibling in the same MSP430G2 family. It offers 8 KB of Flash and 512 bytes of RAM versus the MSP430G2231's 2 KB Flash and 128 bytes RAM. The G2452 also includes a 16-bit sigma-delta ADC and a comparator, while the G2231 has a 10-bit SAR ADC. Both run at 16 MHz and share the same 16-pin QFN footprint, but the G2452 requires a larger firmware budget and costs more per unit.

Is MSP430G2231IRSARQ1 RoHS compliant?

Yes, the MSP430G2231IRSARQ1 is RoHS compliant. The 'R' in the order code indicates a lead-free, RoHS-compliant finish. The part is also halogen-free per the manufacturer's material declaration.