Texas Instruments MSP430F2122TRTVR

Overview

MSP430F2122TRTVR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 4KB+256B flash, 512B RAM, a 10-bit 200-ksps ADC with internal reference and DTC, two 16-bit timers (Timer0_A3 with three capture/compare registers, Timer1_A2 with two), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I2C), and comparator_A+. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430F2122TRTVR datasheet, MSP430F2122TRTVR pinout, MSP430F2122TRTVR application, or MSP430F2122TRTVR equivalent, key selection criteria include active-mode current at 1 MHz, standby-mode power (0.7 µA), wake-up time (<1 µs), integrated analog peripherals, and QFN-32 (RTV) package compatibility with space-constrained PCB layouts.

Technical Context

The MSP430F2122TRTVR implements a digitally controlled oscillator (DCO) calibrated to ±1% across four frequencies up to 16 MHz, enabling rapid wake-up from LPM4 without external crystal dependency. Its clock system delivers ACLK, SMCLK, and MCLK from multiple sources including internal LF oscillator, 32-kHz crystal, HF crystal, or external resistor.

Peripherals are memory-mapped and accessible via all CPU instructions; the USCI modules support simultaneous asynchronous (LIN-capable UART) and synchronous (I²C/SPI) communication, while the ADC10 uses its built-in data transfer controller (DTC) to autonomously store conversion results in RAM without CPU intervention.

Key Specifications

Pinout & Package

Package: 32-pin QFN (RTV), 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad (connected to DVSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F2132TRTVR, the MSP430F2122TRTVR trades flash capacity for identical low-power performance and analog integration; versus MSP430G2553IPW28, it offers superior analog subsystem completeness and QFN thermal performance at the expense of pin count and legacy toolchain support.

Availability

MSP430F2122TRTVR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical instruments, and industrial data loggers requiring stable component supply, long-term lifecycle assurance, and qualified QFN-32 sourcing.

Supply support for MSP430F2122TRTVR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on energy efficiency and system integration.

The MSP430F21x2 product line was designed specifically for ultra-low-power, battery-operated measurement and sensing applications where sub-µA standby current, fast wake-up, and integrated analog peripherals are mandatory.

FAQ

What is the maximum operating frequency of the MSP430F2122TRTVR?

The MSP430F2122TRTVR supports an internal digitally controlled oscillator (DCO) calibrated to four frequencies up to 16 MHz, with ±1% accuracy at 3 V and 30°C. External clock sources - including 32-kHz crystals, HF crystals up to 16 MHz, or external digital clocks - can also drive the system, making 16 MHz the verified maximum functional frequency for this device.

Does the MSP430F2122TRTVR support in-system programming without external hardware?

Yes, the MSP430F2122TRTVR supports in-system programming via its onboard bootstrap loader (BSL), accessible through USCI_A0 UART using P1.1 (TX) and P2.2 (RX). Password protection secures flash access, and no external programmer is required - enabling field firmware updates through a simple serial interface.

How many ADC input channels does the MSP430F2122TRTVR have, and what is their resolution?

The MSP430F2122TRTVR features a 10-bit successive approximation register (SAR) ADC10 module with eight analog input channels (A0–A7), internal reference (1.5 V or 2.5 V), sample-and-hold, autoscan mode, and a data transfer controller (DTC) that autonomously stores results in RAM without CPU involvement.

What low-power modes are available on the MSP430F2122TRTVR, and what is the lowest current draw?

The MSP430F2122TRTVR offers six operating modes: Active, LPM0–LPM3, and LPM4. The lowest power state is LPM4 (RAM retention only), drawing 0.1 µA at 2.2 V. Wake-up from LPM4 to active mode occurs in less than 1 µs via the stabilized DCO, enabling aggressive duty cycling in energy-constrained systems.

Is the MSP430F2122TRTVR pin-compatible with other devices in the MSP430F21x2 family?

Yes, the MSP430F2122TRTVR shares identical pinout and electrical characteristics with MSP430F2112TRTVR and MSP430F2132TRTVR in the 32-pin QFN (RTV) package. Flash size differs (2KB/4KB/8KB), but peripheral registers, memory maps, and I/O functions are fully compatible - allowing seamless migration within the same footprint.