Texas Instruments MSP430F249TPMR

Overview

MSP430F249TPMR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 60KB+256B flash memory, 2KB RAM, a 12-bit ADC with 8 channels, two 16-bit timers (Timer_A with 3 capture/compare registers and Timer_B with 7 plus shadow registers), four USCI modules (dual UART/IrDA/SPI + dual I²C/SPI), and on-chip comparator. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable instrumentation.

For engineers reviewing the MSP430F249TPMR datasheet, MSP430F249TPMR pinout, MSP430F249TPMR application, or MSP430F249TPMR equivalent, key selection criteria include its 64-pin QFP package, ADC12 resolution and channel count, Timer_B shadow register support for glitch-free PWM, dual USCI_A/USCI_B flexibility in multi-protocol communication, and verified operation at 16 MHz with calibrated DCO.

Technical Context

The MSP430F249TPMR implements a 16-bit RISC CPU with constant generators and hardware multiplier (MPY/MPYS/MAC/MACS), enabling high code efficiency in low-power embedded control. Its basic clock system integrates a digitally controlled oscillator (DCO) calibrated to ±1% across four frequencies, internal LF oscillator, 32-kHz crystal support (XT1), and optional high-frequency crystal (XT2 up to 16 MHz).

It features dual USCI modules-USCI_A0/A1 supporting enhanced UART with auto-baud detection and IrDA encoding/decoding, and USCI_B0/B1 supporting synchronous SPI and I²C-with independent clock sources and configurable polarity/phase. The ADC12 includes internal reference, sample-and-hold, and autoscan mode for sequential conversions without CPU intervention.

Key Specifications

Pinout & Package

Package: 64-pin Plastic Quad Flat Package (QFP), PM suffix, RoHS-compliant, body size 10 mm × 10 mm × 1.4 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F248TPMR, the MSP430F249TPMR provides 12KB more flash and Timer_B shadow registers for robust PWM; compared with MSP430F2491TPMR, it retains full ADC12 capability essential for integrated analog sensing.

Availability

MSP430F249TPMR is available at Aetrix Electronics and suitable for smart metering, industrial IoT edge nodes, portable medical instrumentation, and handheld test equipment requiring stable component supply and long-term manufacturability.

Supply support for MSP430F249TPMR 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 reliability.

The MSP430F249TPMR belongs to the MSP430F2xx ultra-low-power microcontroller family, designed specifically for battery-operated measurement and sensing applications demanding extended runtime, high analog integration, and robust real-time control.

FAQ

What is the maximum operating frequency of the MSP430F249TPMR?

The MSP430F249TPMR supports a maximum system clock (MCLK) of 16 MHz using the internal calibrated DCO or external XT2 crystal oscillator. This frequency is fully supported across the entire specified temperature range (–40°C to 105°C) and supply voltage (1.8 V to 3.6 V), enabling deterministic real-time execution of time-critical tasks without overclocking risk. The MSP430F249TPMR achieves this while maintaining ultra-low active-mode current consumption.

Does the MSP430F249TPMR include an integrated ADC, and what are its key specifications?

Yes, the MSP430F249TPMR includes a 12-bit successive-approximation ADC (ADC12) with 8 input channels (A0–A7), internal reference (1.5 V or 2.5 V), sample-and-hold, and hardware autoscan mode. It supports up to 200 kSPS conversion rate and offers programmable conversion memory buffers. The ADC12 is fully functional and documented in the SLAS547I datasheet for the MSP430F249TPMR, distinguishing it from the ADC-less MSP430F2491TPMR variant.

What package type and pin count does the MSP430F249TPMR use?

The MSP430F249TPMR uses a 64-pin Plastic Quad Flat Package (QFP), designated by the "PM" suffix in the part number. Its mechanical dimensions are 10 mm × 10 mm × 1.4 mm, with 0.5 mm lead pitch. This package is RoHS-compliant and compatible with standard surface-mount assembly processes. Pinout is identical to other MSP430F24x devices in the PM package, including full JTAG (TCK/TMS/TDI/TDO) and dual USCI peripheral mapping.

How does the MSP430F249TPMR support low-power operation in battery-powered systems?

The MSP430F249TPMR achieves ultra-low power via five distinct low-power modes: LPM0–LPM4. In off-mode (LPM4) with RAM retention, it draws just 0.1 µA at 3 V; in standby (LPM3) using VLO, it consumes 0.3 µA. Wake-up from any LPM to active mode occurs in under 1 µs. These capabilities-combined with autonomous peripherals like ADC12 autoscan and USCI DMA-allow the MSP430F249TPMR to minimize CPU wake-ups and maximize battery life in intermittently active applications.

Is the MSP430F249TPMR pin-compatible with other devices in the MSP430F24x family?

Yes, the MSP430F249TPMR is pin-compatible with all other 64-pin PM-package devices in the MSP430F24x series-including MSP430F247TPMR, MSP430F248TPMR, and MSP430F2491TPMR-as confirmed by TI's SLAS547I datasheet Table 1 and shared pinout diagrams. Functionally identical pins (e.g., P3.4/UCA0TXD, P6.0/A0) retain the same electrical behavior and register mapping, enabling hardware reuse across firmware variants within the same package option.