Texas Instruments MSP430FR5726IRGET

Overview

MSP430FR5726IRGET from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 16KB ferroelectric RAM (FRAM), 1KB SRAM, 8-MHz system clock, 10-bit ADC with 12 external channels, and 10-channel analog comparator. It operates across 2 V–3.6 V supply and –40°C to 85°C, targeting battery-powered sensor nodes in industrial monitoring systems.

For engineers reviewing the MSP430FR5726IRGET datasheet, MSP430FR5726IRGET pinout, MSP430FR5726IRGET application, or MSP430FR5726IRGET equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), RTC support in LPM3.5 (1.5 µA), eUSCI_A0/A1 UART/IrDA/SPI interfaces, and 24-pin VQFN package compatibility with space-constrained designs.

Technical Context

The MSP430FR5726IRGET implements a 16-bit RISC CPUXV2 core with integrated FRAM memory architecture enabling simultaneous read/write without erase cycles. Its power management includes seven low-power modes, with LPM4.5 consuming only 0.32 µA and RTC operation in LPM3.5 drawing 1.5 µA using a 32-kHz crystal.

Peripherals include dual eUSCI modules (eUSCI_A0/A1 supporting UART, IrDA, SPI; eUSCI_B0 supporting I²C and SPI), three 16-bit timers (Timer_A ×2, Timer_B ×1), hardware multiplier, 32-bit CRC engine, and DMA controller - all optimized for deterministic real-time sensing and control tasks.

Key Specifications

Pinout & Package

Package: 24-pin VQFN (RGE), 4 mm × 4 mm body size, exposed thermal pad (recommended connection 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 MSP430FR5728RGE and MSP430FR5724RGE, the MSP430FR5726IRGET uniquely balances 12-channel ADC capability, full RTC_B support, and 16KB FRAM in the 24-pin VQFN - making it optimal for applications requiring rich analog sensing, time-stamped logging, and robust nonvolatile program/data co-storage.

Availability

MSP430FR5726IRGET is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial condition monitoring, and smart metering endpoints requiring stable component supply, long-term lifecycle assurance, and consistent FRAM reliability.

Supply support for MSP430FR5726IRGET 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 MSP430FR57xx family was designed specifically for ultra-low-power sensing and system management in building automation, smart grid infrastructure, and industrial IoT edge devices - leveraging FRAM to eliminate flash write bottlenecks.

FAQ

What is the maximum operating frequency of the MSP430FR5726IRGET?

The MSP430FR5726IRGET supports a maximum system clock frequency of 8 MHz, achieved via its factory-trimmed DCO oscillator or external HFXT crystal. This frequency enables real-time execution of sensor fusion algorithms and communication protocol stacks while maintaining ultra-low active-mode current (81.4 µA/MHz typical). The MSP430FR5726IRGET's clock system also integrates VLO, LFXT, and HFXT sources for flexible low-power timing.

Does the MSP430FR5726IRGET support hardware UART bootloading?

Yes, the MSP430FR5726IRGET includes a hardware UART bootloader (BSL) accessible via eUSCI_A0 or eUSCI_A1, allowing field firmware updates without JTAG debug hardware. The BSL supports password-protected access and operates across the full 2 V–3.6 V supply range. This capability is integral to the MSP430FR5726IRGET's design for remote, maintenance-free deployments in inaccessible locations.

How many I²C interfaces does the MSP430FR5726IRGET provide?

The MSP430FR5726IRGET provides one dedicated I²C interface via eUSCI_B0, supporting standard and fast-mode (up to 400 kHz) operation with multiple-slave addressing. It does not include a second I²C peripheral; additional serial interfaces are limited to UART and SPI via eUSCI_A0 and eUSCI_A1. This single I²C channel is sufficient for connecting common sensors (e.g., temperature, humidity, IMU) in compact endpoint designs using the MSP430FR5726IRGET.

What is the FRAM endurance rating for the MSP430FR5726IRGET?

The MSP430FR5726IRGET features 16KB of embedded FRAM rated for 10¹⁵ write cycles - orders of magnitude higher than flash-based MCUs. This endurance allows continuous logging of sensor data or frequent firmware parameter updates over decades of operation without memory wear-out. The MSP430FR5726IRGET's FRAM also supports true byte-level writes and zero-latency writes, eliminating erase delays inherent in flash architectures.

Is the MSP430FR5726IRGET pin-compatible with other devices in the FR572x family?

Yes, the MSP430FR5726IRGET in the 24-pin RGE package shares identical pinout and electrical characteristics with MSP430FR5728RGE and MSP430FR5724RGE. All three devices use the same VQFN-24 footprint, signal mapping, and power/ground assignments - enabling direct PCB reuse across variants. However, functional differences (e.g., ADC channel count, RTC presence) require firmware validation when substituting the MSP430FR5726IRGET for another RGE-packaged FR572x device.