Texas Instruments MSP430G2001IRSA16T

Overview

MSP430G2001IRSA16T from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 512 B flash, 128 B RAM, a 16-bit Timer_A with two capture/compare registers, and operation across 1.8 V–3.6 V supply. It delivers 220 µA active current at 1 MHz/2.2 V, supports five low-power modes (down to 0.1 µA in LPM4), and targets battery-powered sensor nodes requiring precise timing and minimal energy use.

For engineers reviewing the MSP430G2001IRSA16T datasheet, MSP430G2001IRSA16T pinout, MSP430G2001IRSA16T application, or MSP430G2001IRSA16T equivalent, key selection criteria include its QFN-16 package footprint, absence of analog comparator (distinguishing it from G2x11 variants), verified 16-MHz DCO capability at ≥3.3 V, and Spy-Bi-Wire debug interface compatibility.

Technical Context

The MSP430G2001IRSA16T implements a 16-bit RISC CPU with constant generators and 16 general-purpose registers, enabling single-cycle instruction execution. Its clock system integrates a digitally controlled oscillator (DCO), internal low-frequency oscillator (VLO), and external crystal support (32 kHz) - all configurable via BCSCTL1/2/3 and DCOCTL registers.

Power management is handled through six operating modes (AM, LPM0–LPM4), with wake-up from LPM4 in under 1 µs using the DCO. Peripheral control uses memory-mapped I/O, including dedicated Timer_A registers (TACCR0/TACCR1/TACTL) and port registers (P1IN/P1OUT/P1DIR) accessible by all CPU instructions.

Key Specifications

Pinout & Package

Package: 16-pin QFN (RSA), 3 mm × 3 mm, 0.4 mm pitch, exposed thermal pad recommended to be connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430G2001IRSA16T, the MSP430G2101IRSA16 offers higher flash capacity and configurable brownout response for mission-critical sensing, while the MSP430G2001IPW14 trades crystal support for smaller footprint and GPIO expansion - both retain identical instruction set, low-power behavior, and Spy-Bi-Wire debug compatibility.

Availability

MSP430G2001IRSA16T is available at Aetrix Electronics and suitable for smart utility meter sensor nodes, wireless remote temperature monitors, industrial equipment status indicators, and portable medical diagnostic tools requiring stable component supply over extended production lifecycles.

Supply support for MSP430G2001IRSA16T 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 expertise in ultralow-power design.

The MSP430G2xx family was engineered specifically for cost-sensitive, battery-operated sensing and measurement applications - prioritizing nanowatt-level sleep currents, fast wake-up, and integrated timing/peripheral functions to eliminate external components.

FAQ

What is the maximum operating frequency of the MSP430G2001IRSA16T?

The MSP430G2001IRSA16T supports up to 16 MHz MCLK when VCC ≥ 3.3 V and duty cycle is 50% ±10%. At 2.7 V, maximum frequency is 12 MHz; at 1.8 V, it is limited to 6 MHz. These limits are defined by the DCO's voltage-dependent calibration and are verified in the SLAS695I datasheet's Recommended Operating Conditions table.

Does the MSP430G2001IRSA16T include an analog comparator?

No, the MSP430G2001IRSA16T does not include the Comparator_A+ module. This distinguishes it from the MSP430G2x11 series (e.g., MSP430G2211). Table 1 in the SLAS695I datasheet explicitly lists "Comp_A+ Channel" as "–" for all MSP430G2x01 devices, confirming absence of comparator inputs, outputs, and related control registers (CACTL1/CACTL2/CAPD).

What debug interface does the MSP430G2001IRSA16T support?

The MSP430G2001IRSA16T supports the 2-wire Spy-Bi-Wire (SBW) interface using pins RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). It does not support full 4-wire JTAG. SBW enables programming, debugging, and fuse blowing - all documented in the device's functional block diagram and Section 2.3 of SLAS695I.

Can the MSP430G2001IRSA16T operate from a 1.8 V supply?

Yes, the MSP430G2001IRSA16T is fully specified to operate from 1.8 V to 3.6 V during program execution. At 1.8 V, maximum MCLK frequency is 6 MHz, and active current is characterized at 220 µA (typ.) for 1 MHz operation. Flash programming requires minimum 2.2 V, per the Recommended Operating Conditions table in SLAS695I.

What is the purpose of the NC pins on the MSP430G2001IRSA16T QFN package?

Pins 13 and 15 of the MSP430G2001IRSA16T RSA package are marked NC (No Connect) in the official TI pinout diagrams and Table 2 of SLAS695I. They are not bonded to die and must remain unconnected on the PCB - neither routed nor terminated - to avoid unintended coupling or ESD paths that could affect signal integrity or reliability.