MSP430F2121TDW 16-bit Ultra-Low-Power MCU in TSSOP Package

MSP430F2121TDW Overview

The MSP430F2121TDW is a low-power 16-bit microcontroller optimized for battery-operated and real-time control tasks. It combines a 16-bit RISC CPU with compact on-chip memory and essential peripherals to deliver efficient, deterministic performance for sensor interfacing and simple control loops. Designers will value its ultra-low-power modes and small TDW package for space-constrained PCBs. For component sourcing and manufacturer details see IC Manufacturer.

MSP430F2121TDW Technical Specifications

MSP430F2121TDW Key Features

• Single 16-bit CPU core delivering compact code and predictable execution for control tasks.
• On-chip Flash and RAM support fast boot and firmware updates, reducing external memory needs.
• Ultra-low-power operating modes extend battery life in portable designs and energy-sensitive applications.
• Integrated 10-bit ADC and timers simplify sensor interfacing and event timing without external components.

Typical Applications

• Battery-powered sensor nodes that require long operational life through multiple low-power modes and immediate wake-up for measurements, minimizing energy use over months or years.
• Portable medical instruments that need a deterministic 16-bit CPU for simple signal processing and precise timer-based sampling with compact firmware.
• Industrial control interfaces where a small package and reliable 16-bit processing handle local monitoring, debounce logic, and serial communication with minimal BOM cost.
• Consumer handheld devices that demand compact microcontroller footprints, low standby current, and on-chip ADCs for user input and analog sensor monitoring.

MSP430F2121TDW Advantages vs Typical Alternatives

The device combines a 16-bit core with very low active and standby currents, offering higher energy efficiency than many 8-bit controllers while using fewer external parts than larger 32-bit MCUs. Its integrated ADC, timer, and compact memory provide more system integration versus discrete solutions. The small TDW package reduces board area and cost compared to larger packages without sacrificing key analog and timing features for embedded control.

MSP430F2121TDW Brand Info

The MSP430F2121TDW is part of the MSP430 family from Texas Instruments, a global semiconductor firm known for low-power microcontrollers. TI positions this series for embedded applications that require small size, low energy consumption, and reliable analog integration in industrial and portable electronics.

FAQ

What is the core architecture?

The device uses a 16-bit RISC architecture. This delivers compact code density and deterministic execution for control and real-time tasks without the complexity of higher?bit cores.

What supply voltage does it require?

This MCU operates from a supply range of 1.8 V to 3.6 V, allowing direct battery connection in many portable and low-voltage systems while supporting common logic levels.

Does it include analog input capability?

Yes, it includes a 10-bit ADC on-chip, which enables direct measurement of analog signals and sensors without external converters, reducing board area and component count.

How much program memory is available?

The device provides 2 KB of Flash memory for firmware and boot code. This size supports compact application code, on-device updates, and basic data storage for small embedded systems.

What operating temperatures are supported?

The MCU is specified for an industrial range from -40 ??C to +85 ??C, making it suitable for outdoor, industrial, and other temperature-variable environments common in fielded equipment.