Texas Instruments MSP430G2001IRSARQ1

Overview

MSP430G2001IRSARQ1 from Texas Instruments is an AEC-Q100 qualified automotive ultra-low-power 16-bit RISC microcontroller featuring 2 KB flash, 128 B RAM, 10 I/O pins, Timer_A2 with two capture/compare registers, and operation across 1.8 V–3.6 V supply. It integrates a digitally controlled oscillator (DCO), basic clock module (ACLK/SMCLK/MCLK), brownout detector, and Spy-Bi-Wire debug interface - deployed in battery-powered sensor nodes and vehicle interior monitoring systems.

For engineers reviewing the MSP430G2001IRSARQ1 datasheet, MSP430G2001IRSARQ1 pinout, MSP430G2001IRSARQ1 application, or MSP430G2001IRSARQ1 equivalent, key selection criteria include automotive qualification (Q1 suffix), QFN-16 package footprint, 0.1 µA off-mode current with RAM retention, sub-1 µs wakeup from LPM3/LPM4, and absence of analog comparator (distinguishing it from MSP430G2211IRSARQ1).

Technical Context

The MSP430G2001IRSARQ1 implements a 16-bit RISC CPU with seven addressing modes, 16 general-purpose registers (including PC, SP, SR), and constant generators for optimized code density. Its clock system combines a factory-calibrated DCO (up to 16 MHz), internal VLO, and optional 32-kHz crystal support via XIN/XOUT pins - enabling flexible low-power timing without external components.

Power management uses six software-selectable operating modes (AM, LPM0–LPM4); active mode draws 220 µA at 1 MHz/2.2 V, standby consumes 0.5 µA, and off mode retains RAM at 0.1 µA. Interrupt handling supports 10 vector sources including Timer_A2 overflow/CCIFG, port P1/P2 edge-triggered I/O, and WDT+ timeout - all routed through dedicated SFRs (IE1/IF1) and prioritized by hardware.

Key Specifications

Pinout & Package

Package: 16-pin QFN (RSA), 4 mm × 4 mm body, exposed thermal pad recommended to be connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MSP430G2001IRSARQ1, the MSP430G2201IRSARQ1 adds analog sensing capability without layout changes, while the MSP430G2001IPW4RQ1 offers identical functionality in a larger, through-hole-compatible package - enabling trade-offs between analog integration and assembly method.

Availability

MSP430G2001IRSARQ1 is available at Aetrix Electronics and suitable for automotive interior sensors, industrial data loggers, and smart HVAC actuators requiring stable component supply across extended product lifecycles.

Supply support for MSP430G2001IRSARQ1 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-grade IC development experience.

The MSP430G2x01 product line delivers ultra-low-power mixed-signal microcontrollers targeting cost-sensitive, battery-operated automotive and industrial sensing applications where long service life and AEC-Q100 compliance are mandatory.

FAQ

What automotive qualification level does MSP430G2001IRSARQ1 meet?

MSP430G2001IRSARQ1 is qualified to AEC-Q100 Grade 1 standards, supporting operation from –40°C to +125°C ambient temperature and passing stress tests for automotive reliability including HTOL, TC, and ESD. This makes MSP430G2001IRSARQ1 suitable for under-hood and cabin applications where thermal robustness and long-term stability are required.

Does MSP430G2001IRSARQ1 include an analog-to-digital converter (ADC)?

No, MSP430G2001IRSARQ1 does not integrate an ADC. It belongs to the G2x01 family variant that omits the Comparator_A+ module and associated analog inputs - unlike the G2x11 series (e.g., MSP430G2211IRSARQ1). Analog signal acquisition requires external ADC or comparator circuits when using MSP430G2001IRSARQ1.

What debug interface does MSP430G2001IRSARQ1 support?

MSP430G2001IRSARQ1 supports the Spy-Bi-Wire (SBW) interface using pins RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This 2-wire subset of JTAG enables full programming, debugging, and emulation without requiring a 4-pin JTAG header - reducing PCB footprint and test point count for MSP430G2001IRSARQ1 designs.

Can MSP430G2001IRSARQ1 operate without an external crystal?

Yes, MSP430G2001IRSARQ1 can operate entirely from its internal digitally controlled oscillator (DCO), which is factory-calibrated to ±3% accuracy at 1 MHz. The DCO supports frequencies up to 16 MHz and stabilizes in less than 1 µs - eliminating the need for external crystals in applications where absolute timing precision is not required.

What is the maximum number of I/O pins available on MSP430G2001IRSARQ1?

MSP430G2001IRSARQ1 provides 10 total I/O pins: eight bits on Port 1 (P1.0–P1.7) and two bits on Port 2 (P2.6 and P2.7). All pins are individually configurable as inputs or outputs with programmable pullup/pulldown resistors and edge-triggered interrupt capability - sufficient for discrete sensor interfacing and control signaling in MSP430G2001IRSARQ1-based systems.