Texas Instruments MSP430F1111AIDGVR

Overview

MSP430F1111AIDGVR 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 less than 6 μs - ideal for battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430F1111AIDGVR datasheet, MSP430F1111AIDGVR pinout, MSP430F1111AIDGVR application, or MSP430F1111AIDGVR equivalent, key selection criteria include its 2KB flash + 128B RAM configuration, TVSOP-20 package, sub-μA LPM3/LPM4 current draw, integrated comparator for slope A/D, and JTAG/BSL programmability without external voltage.

Technical Context

The MSP430F1111AIDGVR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its basic clock module integrates a digitally controlled oscillator (DCO), 32-kHz crystal support, and selectable internal resistors - delivering fast wake-up (<6 μs) and flexible clock sourcing for ultra-low-power operation.

It features two 8-bit I/O ports (P1 with 8 pins, P2 with 6 exposed pins), each supporting individually configurable direction, interrupt edge select, and interrupt flag per bit. The Timer_A3 peripheral provides three capture/compare registers for PWM, interval timing, and input capture, while the Comparator_A module enables analog signal comparison and single-slope A/D conversion on resistive sensors.

Key Specifications

Pinout & Package

Package: 20-pin Thin Very Small Outline Package (TVSOP), body width 4.4 mm, lead pitch 0.65 mm, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F1111AIDGVR, the F1121A offers double flash and RAM for complex algorithms or data buffering, while the F1101A reduces cost and footprint for static, minimal-feature implementations - all sharing identical low-power behavior, pinout, and peripheral set.

Availability

MSP430F1111AIDGVR is available at Aetrix Electronics and suitable for wireless sensor nodes, battery-powered data loggers, and portable medical devices requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MSP430F1111AIDGVR 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 microcontroller innovation.

The MSP430x11x1(A) product line was designed specifically for ultralow-power portable measurement applications - emphasizing sub-μA sleep currents, fast wake-up, integrated analog peripherals, and robust operation across wide temperature and voltage ranges.

FAQ

What is the maximum operating frequency of the MSP430F1111AIDGVR at 3.6 V?

The MSP430F1111AIDGVR supports a maximum system clock (MCLK) frequency of 8 MHz at 3.6 V. This is achieved using the internal DCO or external crystal/resonator sources. The CPU executes instructions at this rate, and Timer_A accepts external clocks up to 10 MHz on TACLK or INCLK pins - enabling high-resolution timing without increasing core frequency.

Does the MSP430F1111AIDGVR support in-system programming without external hardware?

Yes, the MSP430F1111AIDGVR supports in-system programming via its built-in bootstrap loader (BSL), which uses UART communication through P1.1 (TX) and P2.2 (RX). No external programming voltage is required, and the BSL is accessible even after JTAG fuse blow - enabling field firmware updates using only a serial interface and user-defined password protection.

What are the absolute maximum ratings for VCC and I/O pins on the MSP430F1111AIDGVR?

The absolute maximum rating for VCC is −0.3 V to 4.1 V relative to VSS. For any I/O pin, voltage must remain within −0.3 V to VCC + 0.3 V. Exceeding these limits risks permanent damage. The device also specifies ±2 mA maximum diode current per pin and −40°C to 85°C storage temperature for programmed units - consistent with industrial-grade reliability requirements.

How many I/O pins does the MSP430F1111AIDGVR expose in the TVSOP-20 package?

The MSP430F1111AIDGVR exposes 14 dedicated I/O pins in the TVSOP-20 package: Port 1 provides 8 pins (P1.0–P1.7), and Port 2 provides 6 pins (P2.0–P2.5). All 14 pins support individual direction control, interrupt capability with edge select, and Schmitt-trigger inputs - with no NC (no-connect) pins in this variant's pinout.

Can the MSP430F1111AIDGVR operate from a single 1.8 V supply, and what performance trade-offs apply?

Yes, the MSP430F1111AIDGVR is fully specified for operation from 1.8 V to 3.6 V. At 1.8 V, maximum MCLK frequency drops to 4.15 MHz, and active current increases slightly versus 3 V operation - but standby current remains unchanged at 0.7 μA (LPM3) and 0.1 μA (LPM4). This makes it ideal for single-cell Li-ion or Li-SOCl₂ systems where voltage declines over discharge.