Texas Instruments MSP430F1111AIDGV

Overview

MSP430F1111AIDGV from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 2KB flash + 256B information memory, 128B RAM, a 16-bit Timer_A with three capture/compare registers, 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 MSP430F1111AIDGV datasheet, MSP430F1111AIDGV pinout, MSP430F1111AIDGV application, or MSP430F1111AIDGV equivalent, key selection criteria include active-mode current at 1 MHz (≤350 μA @ 3 V), LPM3 standby current (≤1.9 μA @ 85°C), flash programmability via BSL/JTAG, and TVSOP-20 package compatibility with space-constrained PCB layouts.

Technical Context

The MSP430F1111AIDGV 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 - all optimized for sub-6-μs wake-up from LPM3/LPM4.

Peripheral integration includes Timer_A3 with independent capture/compare channels, Comparator_A for slope A/D conversion or battery monitoring, and dual 8-bit I/O ports (P1: 8 pins; P2: 6 pins) with edge-selectable interrupts. Flash memory supports in-system programming via CPU, JTAG, or UART-based BSL with password protection.

Key Specifications

Pinout & Package

Package: 20-pin TVSOP (DGV), 4.4 mm × 6.5 mm, 0.65 mm pitch, exposed pad recommended for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F1121AIDGV, the MSP430F1111AIDGV trades flash/RAM capacity for lower cost and marginally lower active current; versus MSP430F2131IPW, it lacks USI but offers identical analog/comparator functionality and superior LPM3 current at elevated temperatures.

Availability

MSP430F1111AIDGV is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, smart utility meters, and industrial data loggers requiring stable component supply and long-term production continuity.

Supply support for MSP430F1111AIDGV 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 MSP430x11x1(A) product line was engineered specifically for ultralow-power portable measurement and sensing applications - prioritizing sub-microamp standby current, fast wake-up, and integrated analog peripherals to minimize external component count.

FAQ

What is the maximum operating frequency of the MSP430F1111AIDGV at 3.6 V?

The MSP430F1111AIDGV supports a maximum system clock (MCLK) frequency of 8 MHz at 3.6 V, as specified in the recommended operating conditions. This applies when using the internal DCO or external crystal/resonator sources. The device maintains full functionality - including flash programming and Timer_A operation - across this range, with active-mode current scaling linearly per the datasheet's IAM = IAM[3 V] + 120 μA/V × (VCC−3 V) relationship.

Does the MSP430F1111AIDGV support in-system programming without external hardware?

Yes, the MSP430F1111AIDGV 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 programmer is required - only a UART-to-USB bridge and TI's BSL Scripter software. The BSL is protected by a user-defined password stored in flash, and access requires correct entry of the 32-byte password before memory writes are permitted.

What are the absolute maximum ratings for VCC and I/O voltage on the MSP430F1111AIDGV?

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. Notably, the TEST pin may tolerate higher voltage during JTAG fuse blowing, but all other pins - including RST/NMI and JTAG signals - must strictly adhere to these bounds under normal operation and programming conditions.

Can the MSP430F1111AIDGV operate from a single 1.8 V supply, and what performance impact occurs?

Yes, the MSP430F1111AIDGV is fully specified to operate from 1.8 V to 3.6 V. At 1.8 V, the maximum MCLK frequency is 4.15 MHz, and active-mode current drops to ≤250 μA at 1 MHz. LPM3 current remains ≤2.2 μA at 85°C. All peripherals - Timer_A, Comparator_A, and flash programming - function correctly, though flash erase/write times increase slightly due to reduced charge pump efficiency at lower VCC.

How many I/O pins does the MSP430F1111AIDGV expose in the TVSOP-20 package, and which support interrupt capability?

The MSP430F1111AIDGV exposes 14 I/O pins in the TVSOP-20 package: eight on Port 1 (P1.0–P1.7) and six on Port 2 (P2.0–P2.5). All 14 pins support individually configurable interrupt capability - P1 pins offer edge-selectable interrupts (rising/falling), while P2 pins support interrupt-on-change detection. Interrupt vectors are mapped to dedicated priority levels in the vector table, enabling deterministic real-time response to sensor or communication events.