Texas Instruments MSP430F2122TPWR

Overview

MSP430F2122TPWR 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 MSP430F2122TPWR datasheet, MSP430F2122TPWR pinout, MSP430F2122TPWR application, or MSP430F2122TPWR equivalent, key selection criteria include active-mode current at 1 MHz (250 µA), standby-mode current (0.7 µA), off-mode RAM retention (0.1 µA), wake-up time (<1 µs), and integrated analog peripherals enabling single-chip data acquisition in space-constrained designs.

Technical Context

The MSP430F2122TPWR implements a digitally controlled oscillator (DCO) with four factory-calibrated frequencies up to 16 MHz, supporting fast wake-up and precise clocking without external crystals. Its basic clock module delivers ACLK, SMCLK, and MCLK from multiple sources including internal LF oscillator, 32-kHz crystal, HF crystal (≤16 MHz), resonator, or external digital clock.

Peripherals are memory-mapped and accessible via all CPU instructions. The USCI modules support simultaneous asynchronous (UART/LIN/IrDA) and synchronous (SPI/I2C) communication on separate channels, while the ADC10 includes autoscan, sample-and-hold, and data transfer controller (DTC) for autonomous conversion sequences without CPU intervention.

Key Specifications

Pinout & Package

Package: 28-pin TSSOP (PW), body size 9.7 mm × 4.4 mm, 0.65 mm pitch, exposed thermal pad not present. Pin count and function mapping match TI's official PW package designation for MSP430F21x2 series.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F2122TPWR, the MSP430F2132TPWR offers scalable code capacity without altering power behavior or peripheral set, while the MSP430G2553IPW28 trades factory DCO calibration and LIN capability for higher flash density and dual UART - making it suitable for non-automotive serial-centric designs.

Availability

MSP430F2122TPWR is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and industrial current-loop transmitters requiring stable component supply and long-term manufacturability.

Supply support for MSP430F2122TPWR 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 MSP430F2122TPWR belongs to the MSP430F2xx ultra-low-power microcontroller family, designed specifically for battery-operated measurement and sensing applications where extended runtime and integrated analog functionality are critical.

FAQ

What is the maximum operating frequency of the MSP430F2122TPWR?

The MSP430F2122TPWR supports an internal digitally controlled oscillator (DCO) with factory-calibrated frequencies up to 16 MHz. While the DCO can be tuned beyond this range, the guaranteed operational specification per the datasheet is 16 MHz - and the MSP430F2122TPWR achieves full performance (including ADC timing and peripheral synchronization) at this rate under 1.8–3.6 V supply conditions.

Does the MSP430F2122TPWR support LIN bus communication?

Yes, the MSP430F2122TPWR supports LIN bus communication through its USCI_A0 module, which includes enhanced UART with automatic baudrate detection (LIN). This allows the MSP430F2122TPWR to act as a LIN slave node without external transceivers - provided an external LIN physical layer driver (e.g., SN65HVDA100) is used for bus-level signaling.

How much flash memory does the MSP430F2122TPWR have, and is it segmented?

The MSP430F2122TPWR contains 4KB of main flash memory plus 256B of information flash memory. Flash is organized into 512-byte segments; main memory spans segments 0 to n, and information memory consists of four 64-byte segments (A–D). Segment A holds factory DCO and ADC calibration data and is protected by default after reset - critical for maintaining accuracy without re-calibration.

Can the MSP430F2122TPWR operate without an external crystal?

Yes, the MSP430F2122TPWR can operate without an external crystal. Its internal digitally controlled oscillator (DCO) provides four factory-calibrated frequencies (up to 16 MHz) accurate to ±1% over voltage and temperature. This enables fully self-contained timing for most applications - though a 32-kHz crystal may still be added for precise real-time clock functions.

What debug interface does the MSP430F2122TPWR use, and what hardware is required?

The MSP430F2122TPWR uses the Spy-Bi-Wire (SBW) debug interface, requiring only two pins: RST/NMI/SBWTDIO and TEST/SBWTCK. Compatible programmers include the MSP-FET430UIF (USB) or MSP-FET430PIF (parallel port). No external level-shifting or JTAG header is needed - SBW is electrically and logically compatible with standard MSP430 debug tools.