Texas Instruments MSP430G2201IRSA16T

Overview

MSP430G2201IRSA16T from Texas Instruments is an ultralow-power 16-bit RISC microcontroller with 2 KB flash, 128 B RAM, and a 16-bit Timer_A featuring two capture/compare registers. It operates from 1.8 V to 3.6 V, supports five power-saving modes, and delivers 220 µA active current at 1 MHz/2.2 V - optimized for battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430G2201IRSA16T datasheet, MSP430G2201IRSA16T pinout, MSP430G2201IRSA16T application, or MSP430G2201IRSA16T equivalent, key selection considerations include its QFN-16 package, absence of on-chip analog comparator (distinguishing it from G2x11 variants), Spy-Bi-Wire debug interface, and 10 GPIO pins with interrupt capability - all critical for compact, low-cost embedded control designs.

Technical Context

The MSP430G2201IRSA16T 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), with MCLK, SMCLK, and ACLK outputs routed to peripherals and CPU.

It features a basic clock module with calibrated DCO frequencies up to 16 MHz (at ≥3.3 V), brownout detection, watchdog timer (WDT+), and a 16-bit Timer_A2 with two capture/compare registers - but no Comparator_A+ module, confirming its G2x01-series identity per Table 1 and functional block diagrams.

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 microcontroller applications.

Compared with MSP430G2211IRSA16, the MSP430G2201IRSA16T lacks analog comparator circuitry but offers identical power efficiency and digital I/O count; versus MSP430G2201IPW14, it provides smaller footprint and better thermal performance in space-constrained layouts.

Availability

MSP430G2201IRSA16T is available at Aetrix Electronics and suitable for smart sensor nodes, portable data loggers, and industrial control panels requiring stable component supply across long-lifecycle embedded programs.

Supply support for MSP430G2201IRSA16T 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 over 50 years of innovation in low-power design.

The MSP430G2xx family targets cost-sensitive, battery-operated applications where ultralow power consumption, small footprint, and integrated peripherals reduce system complexity and bill-of-materials cost.

FAQ

What is the maximum operating frequency of the MSP430G2201IRSA16T?

The MSP430G2201IRSA16T supports a maximum MCLK frequency of 16 MHz when VCC ≥ 3.3 V and duty cycle is 50% ± 10%. At lower supply voltages (e.g., 2.2 V), the maximum frequency is reduced to 6 MHz. This specification is defined in the Recommended Operating Conditions table of the SLAS695I datasheet and verified across temperature and voltage ranges.

Does the MSP430G2201IRSA16T include an analog comparator?

No, the MSP430G2201IRSA16T does not include an analog comparator. It belongs to the G2x01 series, which omits the Comparator_A+ module present in G2x11 variants like MSP430G2211IRSA16. This distinction is confirmed in Table 1 (Available Options), functional block diagrams, and the "Comparator_A+ (MSP430G2x11 Only)" section of the datasheet.

What debug interface does the MSP430G2201IRSA16T support?

The MSP430G2201IRSA16T supports Spy-Bi-Wire (SBW), a 2-wire variant of JTAG, using pins RST/NMI/SBWTDIO (pin 9) and TEST/SBWTCK (pin 11). This interface enables full in-system programming, debugging, and flash memory access without requiring a 4-wire JTAG header, reducing PCB routing complexity.

How many GPIO pins does the MSP430G2201IRSA16T provide?

The MSP430G2201IRSA16T provides 10 GPIO pins: eight on Port 1 (P1.0–P1.7) and two on Port 2 (P2.6 and P2.7). All 10 pins support digital input/output, individually configurable pullup/pulldown resistors, and interrupt capability with edge select - as documented in the Terminal Functions table and port configuration registers.

What power-saving modes are available on the MSP430G2201IRSA16T?

The MSP430G2201IRSA16T offers five software-selectable low-power modes: LPM0 through LPM4. LPM4 achieves 0.1 µA current at 2.2 V with RAM retention, while LPM3 draws 0.5–1.5 µA depending on ACLK source (VLO vs. LFXT1). These modes are controlled via SCG1, SCG0, CPUOFF, and OSCOFF bits in the status register.