MSP430F2121IPW 16-bit Microcontroller IPW Package

MSP430F2121IPW Overview

The MSP430F2121IPW is an ultra?low?power, 16?bit microcontroller built for simple embedded control and battery?powered systems. It combines a low?power CPU with integrated analog and digital peripherals to handle sensing, timing, and serial communications in small footprints. The device targets cost?sensitive industrial and consumer designs that need reliable, energy?efficient control. For sourcing and further product documents visit IC Manufacturer.

MSP430F2121IPW Technical Specifications

MSP430F2121IPW Key Features

• One 16?bit RISC core gives compact code and faster integer math for control loops.
• Ultra?low operating voltage (1.8?C3.6 V) enables longer battery life and compatibility with common single?cell supplies.
• Integrated 10?bit ADC simplifies sensor interfacing and reduces external component count.
• On?chip Timer_A supports precise timing and PWM for motor or LED driving with minimal CPU overhead.
• USI serial block provides SPI and I2C compatibility for easy peripheral expansion and board?level integration.
• Multiple low?power modes balance active performance and deep sleep to lower average power consumption in duty?cycled designs.
• Compact TSSOP?20 package reduces PCB area compared with larger packages, helping in space?constrained boards.

Typical Applications

• Battery?powered sensor nodes for industrial monitoring where low standby current and compact size extend maintenance intervals and reduce BOM cost.
• Portable medical devices that need a precise ADC and timer to sample signals and control actuators while maximizing battery life.
• Simple motor or actuator control in HVAC or small appliances using Timer_A PWM and low interrupt latency for responsive control loops.
• Board?level housekeeping MCU in instrumentation, providing serial control, ADC readings, and watchdog functions in compact TSSOP?20 form factor.

MSP430F2121IPW Advantages vs Typical Alternatives

The device combines a 16?bit core and integrated analog peripherals in a smaller package and at lower standby currents than many 8?bit MCUs. Compared with larger MCU families, it offers fewer pins but tighter energy efficiency and simpler peripheral stacks. For designs prioritizing energy per operation and minimal BOM, this MCU reduces external ADCs, lowers sleep current, and fits denser PCBs without sacrificing basic serial and timing functions.

MSP430F2121IPW Brand Info

The MSP430F2121IPW is part of the MSP430 microcontroller family from Texas Instruments. The family is known for ultra?low?power operation and broad support for embedded development tools and application notes, making this part suitable for quick prototyping and reliable production designs.

FAQ

What is the supply voltage range?

The operating supply range is 1.8 to 3.6 volts. This range supports single?cell lithium and common regulated supplies used in portable and industrial systems.

How is the device programmed?

Programming and debug typically use TI??s low?pin debug interfaces such as Spy?Bi?Wire or standard JTAG depending on the development toolchain. Use the vendor??s programmers and IDE for flashing and debugging.

Does it include an ADC and timers?

Yes. The MCU includes a 10?bit ADC for analog inputs and a 16?bit Timer_A module to generate PWM, capture, and timing events for control and measurement tasks.

What serial interfaces are available?

The device provides a USI serial interface that supports SPI and I2C protocols. This allows simple connection to sensors, EEPROMs, and serial peripherals without extra UART hardware.

Is this suitable for battery?operated designs?

Yes. It supports multiple low?power operating modes and a low operating voltage, which together reduce average current draw and prolong battery life in duty?cycled applications.