Texas Instruments MSP430F147IRTDT

Overview

MSP430F147IRTDT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 32KB flash, 1KB RAM, dual USARTs, 12-bit ADC with 8 channels, two 16-bit timers (Timer_A3 and Timer_B7), and on-chip comparator - designed for battery-powered sensor systems and portable instrumentation requiring sub-µA standby current and <6 µs wake-up.

For engineers reviewing the MSP430F147IRTDT datasheet, MSP430F147IRTDT pinout, MSP430F147IRTDT application, or MSP430F147IRTDT equivalent, this page delivers verified functional specifications, validated QFN-64 package mapping, confirmed peripheral register allocation, and real-world timing-critical use cases in industrial sensing and handheld metering.

Technical Context

The MSP430F147IRTDT implements a 16-bit CPU with constant generators and hardware multiplier, enabling high code efficiency in memory-constrained embedded applications. Its five low-power modes-including LPM3 with 1.6 µA consumption and RAM retention-optimize energy use across intermittent-sampling workloads.

It integrates dual synchronous/asynchronous serial interfaces (USART0/USART1), a 12-bit ADC with internal reference and autoscan, and Timer_B7 with seven capture/compare registers plus shadow registers for glitch-free PWM generation - all synchronized to a digitally controlled oscillator (DCO) that achieves active-mode entry in under 6 µs from standby.

Key Specifications

Pinout & Package

Package: 64-pin VQFN (RTD), 9 mm × 9 mm body, exposed thermal pad connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MSP430F147IRTDT, MSP430F149IPM offers greater firmware headroom at the cost of larger footprint and higher price, while MSP430F1471IRTDT sacrifices XT2 flexibility for marginal BOM simplification - making MSP430F147IRTDT the optimal balance of memory, features, and oscillator versatility in space-constrained designs.

Availability

MSP430F147IRTDT is available at Aetrix Electronics and suitable for smart energy meters, industrial sensor nodes, and portable gas detectors requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MSP430F147IRTDT 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 specializing in analog, embedded processing, and connectivity technologies with decades of MCU innovation focused on ultra-low-power efficiency.

The MSP430F147IRTDT belongs to TI's MSP430F14x mixed-signal microcontroller family, engineered specifically for battery-operated measurement and control applications where energy efficiency, integrated analog capability, and rapid wake-up response are critical design requirements.

FAQ

What is the maximum operating frequency of the MSP430F147IRTDT?

The MSP430F147IRTDT operates up to 8 MHz using its internal digitally controlled oscillator (DCO), with typical DCO calibration achieving stable 1–8 MHz output across voltage and temperature. External crystals (LFXT1 or XT2) can drive system clocks at 32.768 kHz or up to 8 MHz respectively, but the DCO remains the default active-mode clock source unless explicitly configured otherwise in firmware.

Does the MSP430F147IRTDT support JTAG debugging?

Yes, the MSP430F147IRTDT supports full JTAG debugging via pins TCK (Pin 57), TMS (Pin 56), TDI/TCLK (Pin 55), and TDO/TDI (Pin 54). It also supports TI's Spy-Bi-Wire (SBW) interface using only TCK and TDO/TDI, reducing debug footprint. Both interfaces allow full memory access, breakpoint setting, and real-time register inspection during development.

How many ADC input channels does the MSP430F147IRTDT have, and what are their pin assignments?

The MSP430F147IRTDT has eight ADC input channels assigned to P6.0/A0 through P6.7/A7 (Pins 59, 60, 61, 2, 3, 4, 5, 6). These pins serve dual roles as general-purpose I/O and analog inputs, selectable via ADC12CTL0 register configuration. All eight channels support single-ended or differential acquisition with programmable sample-and-hold timing.

What is the purpose of the TBOUTH pin on the MSP430F147IRTDT?

The TBOUTH pin (Pin 51) on the MSP430F147IRTDT is a dedicated Timer_B output halt control. When asserted high, it forces all Timer_B7 PWM outputs (TB0–TB6) into high-impedance state simultaneously - essential for safe motor or LED driver shutdown during fault conditions without requiring individual pin reconfiguration in firmware.

Can the MSP430F147IRTDT operate from a single 1.8-V supply?

Yes, the MSP430F147IRTDT is fully specified to operate across 1.8 V to 3.6 V, including at the minimum 1.8-V supply. At 1.8 V, it supports up to 1 MHz CPU frequency and retains full functionality of ADC, timers, and USARTs - enabling compatibility with energy-harvesting sources and low-voltage battery chemistries such as LiFePO₄ or NiMH.