Texas Instruments MSP430F2101TPWR

Overview

MSP430F2101TPWR from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 1 KB Flash, 128 B RAM, a 16-bit Timer_A with three capture/compare registers, an on-chip analog comparator for slope A/D conversion, and operation across 1.8 V–3.6 V supply. It targets battery-powered sensor systems requiring sub-1-μs wake-up and long-term energy efficiency.

For engineers reviewing the MSP430F2101TPWR datasheet, MSP430F2101TPWR pinout, MSP430F2101TPWR application, or MSP430F2101TPWR equivalent, key selection criteria include its -40°C to +105°C temperature rating, TSSOP-20 package, integrated DCO with four factory-calibrated frequencies (1/8/12/16 MHz), brownout detection, and JTAG/on-chip emulation support for low-overhead debugging.

Technical Context

The MSP430F2101TPWR implements a 16-bit CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its basic clock module integrates a digitally controlled oscillator (DCO), 32-kHz crystal input (XIN/XOUT), and high-frequency crystal support up to 16 MHz - all configurable via BCSCTL registers.

Power management is handled through six software-selectable operating modes (AM, LPM0–LPM4), with LPM4 drawing only 0.1 μA at 2.2 V. The analog comparator supports external signal monitoring and slope-based A/D conversion without external components, while Timer_A3 provides PWM, interval timing, and capture functionality with interrupt capability per channel.

Key Specifications

Pinout & Package

Package: 20-pin TSSOP (PW), RoHS-compliant, body size 6.5 mm × 4.4 mm, 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F2101TPWR, MSP430F2111TPWR offers double Flash capacity with zero hardware changes, while MSP430G2553IPW20 trades pin compatibility for richer communication peripherals and memory - making it suitable only for greenfield layouts.

Availability

MSP430F2101TPWR is available at Aetrix Electronics and suitable for smart sensor nodes, battery-powered metering, and industrial control interfaces requiring stable component supply across automotive-grade temperature ranges (-40°C to +105°C).

Supply support for MSP430F2101TPWR 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 for industrial, automotive, and consumer markets.

The MSP430F2101TPWR belongs to the MSP430x21x1 ultra-low-power MCU family, designed specifically for energy-constrained applications where rapid wake-up, minimal active/sleep current, and integrated analog functions reduce system-level complexity.

FAQ

What is the maximum operating frequency of the MSP430F2101TPWR?

The MSP430F2101TPWR supports a maximum MCLK frequency of 16 MHz when VCC ≥ 3.3 V and duty cycle is 50% ±10%. At lower supply voltages, the maximum frequency scales down: 12 MHz at 2.7 V and 6 MHz at 1.8 V. This graded performance ensures reliable operation across its full 1.8 V–3.6 V supply range while maintaining timing integrity in battery-voltage-declining applications.

Does the MSP430F2101TPWR include hardware UART support?

No, the MSP430F2101TPWR does not include dedicated UART hardware. Communication is implemented via the bootstrap loader (BSL) using Timer_A and GPIO pins P1.1 (TX) and P2.2 (RX) in UART mode, or through bit-banged software UART. For designs requiring native UART, SPI, or I²C, consider the MSP430G2553IPW20 as an alternative with integrated USCI modules.

What package type is used for the MSP430F2101TPWR?

The MSP430F2101TPWR uses a 20-pin TSSOP (Thin Shrink Small Outline Package) with 0.65 mm lead pitch and dimensions of 6.5 mm × 4.4 mm. This RoHS-compliant surface-mount package supports automated assembly and provides adequate thermal dissipation for ultra-low-power operation without heatsinking.

How does the analog comparator in the MSP430F2101TPWR function for A/D conversion?

The MSP430F2101TPWR's Comparator_A+ module performs slope A/D conversion by charging a capacitor at a known rate and measuring the time required for the comparator output to toggle against the input voltage. This technique achieves effective 10–12-bit resolution without external components, leveraging the built-in Timer_A for precise timing - ideal for slow-varying sensor signals like thermistors or battery voltage monitoring.

Is the MSP430F2101TPWR qualified for automotive applications?

Yes, the 'T' suffix in MSP430F2101TPWR indicates qualification for extended temperature operation from -40°C to +105°C, meeting AEC-Q100 stress test requirements for automotive under-hood and infotainment subsystems. Its brownout detector, EEPROM-like information memory, and robust ESD tolerance (±2 kV HBM) further support deployment in harsh automotive environments.