Texas Instruments MSP430F1111AIRGET

Overview

MSP430F1111AIRGET 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 achieves active-mode current of 160 μA at 1 MHz/2.2 V, enabling battery-powered sensor systems requiring sub-μA standby (0.7 μA) and <6 μs wake-up.

For engineers reviewing the MSP430F1111AIRGET datasheet, MSP430F1111AIRGET pinout, MSP430F1111AIRGET application, or MSP430F1111AIRGET equivalent, key selection criteria include flash-based in-system programmability, integrated slope A/D capability via comparator, low-power mode flexibility (LPM0–LPM4), and QFN-24 package compatibility for space-constrained embedded sensing nodes.

Technical Context

The MSP430F1111AIRGET implements a 16-bit RISC CPU with constant generators and seven addressing modes, delivering one-cycle register operations and optimized code efficiency. Its basic clock module integrates a digitally controlled oscillator (DCO), 32-kHz crystal support, and selectable external resistor or high-frequency crystal inputs - all enabling sub-6-μs wake-up from LPM3/LPM4.

Peripherals include a 16-bit Timer_A3 with three independent capture/compare registers supporting PWM, interval timing, and input capture; a comparator_A module configurable for battery monitoring or single-slope A/D conversion; and dual 8-bit I/O ports (P1: 8 pins, P2: 6 pins) with individually programmable direction, interrupt enable, and edge-selectable triggers.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F1111AIRGET, MSP430F1121AIRGE offers scalable memory within identical power/peripheral architecture, while MSP430F1232IRHBT trades pin count and power efficiency for integrated UART and SAR ADC - making the MSP430F1111AIRGET optimal for minimal-footprint, battery-critical slope-A/D sensor nodes.

Availability

MSP430F1111AIRGET is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, and battery-powered data loggers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant QFN packaging.

Supply support for MSP430F1111AIRGET 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 90 years of innovation in low-power design.

The MSP430x1xx family was engineered specifically for ultralow-power sensing and measurement applications, emphasizing extended battery life, integrated analog peripherals, and rapid wake-up responsiveness in portable instrumentation.

FAQ

What is the maximum operating frequency of the MSP430F1111AIRGET at 3.6 V?

The MSP430F1111AIRGET supports 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 ensures reliable timing margins for all internal modules including Timer_A and the comparator. The DCO-based clock remains stable across this range, and external crystal sources up to 8 MHz are supported in XT1 mode.

Does the MSP430F1111AIRGET support in-system programming without external hardware?

Yes, the MSP430F1111AIRGET supports in-system programming via its built-in bootstrap loader (BSL), which uses UART communication on P1.1 (TX) and P2.2 (RX). No external programming voltage or JTAG debugger is required - firmware updates can be performed using only a UART-to-USB bridge and TI's BSL script tools, enabling field upgrades and manufacturing flexibility.

How many I/O pins does the MSP430F1111AIRGET expose in the RGE package?

The MSP430F1111AIRGET in the 24-pin QFN (RGE) package exposes 14 functional I/O pins: eight on Port 1 (P1.0–P1.7) and six on Port 2 (P2.0–P2.5). Pins P2.6 and P2.7 are not implemented externally. Four pins (TEST, RST/NMI, XIN, XOUT) serve dual or dedicated functions but are not general-purpose I/O.

Can the MSP430F1111AIRGET perform analog-to-digital conversion without an external ADC?

Yes, the MSP430F1111AIRGET can perform analog-to-digital conversion using its on-chip Comparator_A module in conjunction with Timer_A to implement single-slope A/D conversion. This technique leverages an external RC network and precise timing to achieve up to 12-bit effective resolution - eliminating the need for a separate ADC IC in cost- and space-sensitive designs.

What low-power modes are available on the MSP430F1111AIRGET, and how do they differ?

The MSP430F1111AIRGET provides six operating modes: Active Mode (AM) and five low-power modes (LPM0–LPM4). LPM3 retains ACLK (e.g., 32.768 kHz) while disabling MCLK/SMCLK for RTC-like operation at 0.7 μA. LPM4 disables all clocks including ACLK, drawing only 0.1 μA - ideal for deep sleep between infrequent wake-ups. Each mode offers distinct trade-offs between current draw, wake-up latency (<6 μs from LPM3/LPM4), and peripheral availability.