Texas Instruments MSP430F2111IRGET

Overview

MSP430F2111IRGET from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 2 KB + 256 B flash memory, 128 B RAM, a 16-bit Timer_A with three capture/compare registers, and an on-chip analog comparator for slope A/D conversion. It operates from 1.8 V to 3.6 V and supports active-mode current of 250 μA at 1 MHz and 2.2 V - ideal for battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430F2111IRGET datasheet, MSP430F2111IRGET pinout, MSP430F2111IRGET application, or MSP430F2111IRGET equivalent, key selection criteria include its QFN-24 package, integrated comparator_A+, ultra-fast <1 μs wake-up from standby mode, calibrated DCO frequencies up to 16 MHz, and JTAG/on-chip emulation support for low-overhead debugging.

Technical Context

The MSP430F2111IRGET implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its basic clock module integrates a digitally controlled oscillator (DCO), 32-kHz crystal support, and high-frequency crystal input up to 16 MHz - all configurable via BCSCTL registers.

Power management is handled through six software-selectable operating modes (AM, LPM0–LPM4), with LPM4 drawing only 0.1 μA at 2.2 V. The analog comparator_A+ provides eight selectable inputs (CA0–CA7), CAOUT output, and direct integration with Timer_A for slope ADC functionality without external components.

Key Specifications

Pinout & Package

Package: 24-pin QFN (RGE), 4 mm × 4 mm, exposed thermal pad (to be connected to VSS).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.

Compared with MSP430F2111IRGET, MSP430F2121IRGET offers double flash capacity with identical power/performance and pin compatibility, while MSP430G2553IRHB trades comparator_A+ for richer serial peripherals and larger memory - making it suitable for protocol-heavy rather than analog-centric applications.

Availability

MSP430F2111IRGET is available at Aetrix Electronics and suitable for wireless sensor nodes, battery-powered data loggers, and smart metering endpoints requiring stable component supply and long-term industrial availability.

Supply support for MSP430F2111IRGET 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 delivering analog, embedded processing, and connectivity solutions with emphasis on energy efficiency and system integration.

The MSP430F21x1 product line targets ultra-low-power portable measurement applications - optimized for extended battery life through five low-power modes, fast wake-up, and integrated analog peripherals like comparator_A+ and Timer_A.

FAQ

What is the maximum operating frequency of the MSP430F2111IRGET?

The MSP430F2111IRGET supports a maximum MCLK frequency of 16 MHz when VCC ≥ 3.3 V, with factory-calibrated DCO settings for 1 MHz, 8 MHz, 12 MHz, and 16 MHz. At lower supply voltages (e.g., 2.2 V), the maximum guaranteed frequency reduces to 6 MHz per TI's recommended operating conditions. All timing is derived from the DCO or external crystal sources routed through the basic clock module.

Does the MSP430F2111IRGET support hardware UART or SPI interfaces?

No, the MSP430F2111IRGET does not include dedicated hardware UART, SPI, or I²C modules. Communication is implemented via software bit-banging or through Timer_A outputs and GPIO interrupts. For hardware serial interfaces, consider the MSP430G2553IRHB or MSP430F2274IRHAT, which integrate USCI modules. The MSP430F2111IRGET relies on its comparator_A+ and Timer_A for analog-centric functions instead.

How is flash memory programmed on the MSP430F2111IRGET?

Flash memory on the MSP430F2111IRGET can be programmed via three methods: JTAG interface using tools like MSP-FET430UIF, bootstrap loader (BSL) over UART using P1.1 (TX) and P2.2 (RX), or in-system by the CPU itself. The BSL requires a user-defined password and supports erasure and reprogramming without external hardware - ideal for field firmware updates in deployed sensor nodes.

What is the function of the TEST pin on the MSP430F2111IRGET?

On the MSP430F2111IRGET, the TEST pin (Pin 22) selects JTAG test mode during device programming and debug operations. When pulled high, it enables boundary-scan and emulation functions. During normal operation, it must be tied to VCC or left unconnected with internal pullup active. Misconfiguring this pin disables JTAG access and prevents debugging or flash programming via standard tools.

Can the MSP430F2111IRGET operate from a 1.8 V supply while running at 16 MHz?

No. Per TI's SLAS439F datasheet, the MSP430F2111IRGET requires VCC ≥ 3.3 V to guarantee stable 16 MHz operation. At 1.8 V, the maximum supported MCLK frequency is 6 MHz. Attempting 16 MHz operation at 1.8 V may cause timing violations, flash corruption, or unpredictable resets. Designers must scale clock frequency according to supply voltage using the DCO calibration constants stored in Info Memory Segment A.