MSP430F2121TPW 16-bit Microcontroller TSSOP-14

MSP430F2121TPW Overview

The MSP430F2121TPW is a low?power, 16?bit microcontroller designed for compact industrial and battery?powered control tasks. It combines a 16?bit RISC CPU with on?chip nonvolatile memory and serial peripherals in a 20?pin TSSOP package, making it smaller and lower cost than many 32?bit alternatives. Typical use cases need fewer I/O lines but demand sub?milliamp standby currents and straightforward SPI/I2C or UART support. For purchasing and additional resources visit IC Manufacturer.

MSP430F2121TPW Technical Specifications

MSP430F2121TPW Key Features

• Single 16?bit core with deterministic instruction timing for precise control and predictable response in tight loop tasks.
• On?chip flash memory that enables field firmware updates and reduces BOM cost versus external memory solutions.
• Ultra?low supply range (1.8?C3.6 V) that supports battery operation and reduces power supply complexity.
• Integrated USI supporting SPI and I2C for simple sensor and peripheral interfacing without extra controllers.
• 16?bit Timer_A with three capture/compare registers for accurate timing, PWM and event capture in motor or lighting control.
• Small 20?pin TSSOP package that lowers board area and simplifies routing compared with larger QFP packages.
• On?chip analog comparator for wakeup and simple analog threshold detection without an ADC.
• Industrial temperature rating (?40 ??C to +85 ??C) for reliable operation in field environments and outdoor deployments.

Typical Applications

• Battery?powered sensor node where low supply voltage and ultra?low sleep currents extend battery life in remote telemetry designs.
• Simple human?machine interface controller that drives LEDs, reads switches, and communicates via SPI or I2C to larger systems.
• Compact motor or actuator controller using Timer_A PWM outputs and capture/compare for position or speed control in small appliances.
• Industrial threshold detector that uses the on?chip analog comparator for fast wakeup on analog events and minimal standby power draw.

MSP430F2121TPW Advantages vs Typical Alternatives

The device offers a more compact and power?efficient alternative to many 32?bit microcontrollers. With a 16?bit RISC core and up to 16 MHz operation, it delivers adequate processing more economically and with lower energy use. The integrated flash and USI serial interface reduce external components, lowering BOM and board area. For designs that prioritize low voltage operation, small package size, and deterministic timing, this part is a clear, cost?effective choice.

MSP430F2121TPW Brand Info

The MSP430F2121TPW is part of Texas Instruments?? MSP430 family. TI positions this series for low?power embedded control with a strong ecosystem of development tools, application notes, and community support. The brand emphasizes energy efficiency, proven silicon, and long?term availability for industrial and consumer designs.

FAQ

What package does it use?

The device ships in a 20?pin TSSOP package (package code PW). That package reduces PCB footprint compared with larger forms and simplifies assembly for compact designs.

What is the supply voltage range?

It operates from 1.8 V to 3.6 V, which supports common coin and rechargeable battery chemistries and allows direct interfacing with low?voltage sensors and peripherals.

Does it include serial interfaces?

Yes. It includes a USI module that supports SPI and I2C style protocols, enabling direct connection to many sensors, memories, and bridge chips without extra controllers.

Is there an ADC on board?

This device provides an on?chip analog comparator (Comparator_A) for simple threshold detection and wakeup. For full ADC conversion, alternative devices in the family include dedicated ADC modules.

What development support is available?

There is broad development support from Texas Instruments, including documentation, code examples, and toolchain support for debugging and programming. Reference materials accelerate evaluation and production development.