Texas Instruments MSP430F1111AIRGER

Overview

MSP430F1111AIRGER from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 2KB+256B flash memory, 128B RAM, a 16-bit Timer_A with three capture/compare registers, an on-chip analog comparator, and 14 programmable I/O pins. It operates from 1.8 V to 3.6 V and supports wake-up from standby mode in under 6 μs - ideal for battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430F1111AIRGER datasheet, MSP430F1111AIRGER pinout, MSP430F1111AIRGER application, or MSP430F1111AIRGER equivalent, key selection criteria include its 20-pin QFN (RGE) package, LPM4 current of 0.1–0.5 μA at 25°C, integrated DCO oscillator, and JTAG/BSL programmability without external voltage.

Technical Context

The MSP430F1111AIRGER implements a 16-bit CPU with seven addressing modes and constant generators for high code efficiency. Its basic clock module supports multiple sources: internal DCO (stabilizes in <6 μs), 32-kHz crystal, high-frequency crystal, resonator, or external clock - enabling flexible low-power timing architectures.

It integrates Timer_A3 with three independent capture/compare registers, supporting PWM generation, interval timing, and edge-triggered capture. The analog comparator provides slope A/D conversion capability and battery-monitoring functions, while dual I/O ports (P1: 8-bit, P2: 6-bit) support interrupt-on-change with edge-selectable triggers.

Key Specifications

Pinout & Package

Package: 24-pin QFN (RGE), 4 mm × 4 mm, 0.5 mm pitch, exposed thermal pad (recommended connection to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F1111AIRGE, MSP430F1121AIRGE offers scalable memory for evolving firmware, while MSP430F1101AIRGE reduces cost and footprint for static, minimal-function implementations - all sharing identical QFN-24 packaging, peripheral set, and ultra-low-power profile.

Availability

MSP430F1111AIRGER is available at Aetrix Electronics and suitable for wireless sensor nodes, battery-powered data loggers, and portable medical devices requiring stable component supply across long-lifecycle industrial programs.

Supply support for MSP430F1111AIRGER 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 MSP430x11x1(A) product line targets ultralow-power portable measurement applications - designed to maximize battery life through intelligent power gating, fast wake-up, and integrated analog peripherals that reduce external component count.

FAQ

What is the maximum operating frequency of the MSP430F1111AIRGER at 3.6 V?

The MSP430F1111AIRGER achieves a maximum system clock (MCLK) frequency of 8 MHz at 3.6 V, as specified in the recommended operating conditions. This limit applies when executing code from flash memory and reflects the combined constraints of core timing, flash access latency, and voltage-dependent propagation delays. The device maintains full functionality - including Timer_A, comparator, and I/O - across this range.

Does the MSP430F1111AIRGER support JTAG debugging and in-circuit programming?

Yes, the MSP430F1111AIRGER supports full JTAG debugging and in-system programming via the TEST, TCK, TMS, TDI/TCLK, and TDO/TDI pins mapped to Port 1. JTAG access enables breakpoint setting, register inspection, and flash memory programming without removing the device from the PCB. Security fuse blowing via TEST pin prevents unauthorized access after production programming.

What package type and pin count does the MSP430F1111AIRGER use?

The MSP430F1111AIRGER uses a 24-pin QFN (RGE) package measuring 4 mm × 4 mm with 0.5 mm pitch and an exposed thermal pad. This package is distinct from the 20-pin SOWB, TSSOP, and TVSOP variants used by other members of the F11x1A family. The RGE variant provides superior thermal performance and board-space efficiency for compact, high-density designs.

Can the MSP430F1111AIRGER perform analog-to-digital conversion without an external ADC?

Yes, the MSP430F1111AIRGER supports single-slope analog-to-digital conversion using its integrated analog comparator and Timer_A. By charging a capacitor through a resistive sensor and timing the comparator trip point with Timer_A, the device performs effective 10–12 bit-equivalent A/D conversion - eliminating need for external ADC in applications like thermistor or potentiometer reading.

What is the minimum supply voltage required to program the flash memory of the MSP430F1111AIRGER?

The MSP430F1111AIRGER requires a minimum supply voltage of 2.7 V to perform flash memory programming or erase operations, as defined in the recommended operating conditions. This is higher than its 1.8 V minimum for normal program execution. Attempting flash writes below 2.7 V may result in incomplete or corrupted memory writes and is not supported by the device specification.