Texas Instruments MSP430FR5720IRGET

Overview

MSP430FR5720IRGET from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 4KB FRAM nonvolatile memory, 1KB RAM, and an integrated 10-bit ADC with 6 external input channels. It operates across 2 V–3.6 V supply and –40°C to 85°C, supporting real-time clock (RTC), three enhanced USCI modules (eUSCI_A0/A1/B0), and five 16-bit timers. It targets battery-powered sensor nodes in industrial monitoring systems.

For engineers reviewing the MSP430FR5720IRGET datasheet, MSP430FR5720IRGET pinout, MSP430FR5720IRGET application, or MSP430FR5720IRGET equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), LPM3.5 RTC current (1.5 µA), 24-pin VQFN package footprint, and compatibility with TI's MSP-FET430U40A debug interface.

Technical Context

The MSP430FR5720IRGET implements the MSP430xV2 CPU core with 16-bit RISC architecture and supports up to 8-MHz system clock via DCO, LFXT, or VLO sources. Its memory subsystem integrates FRAM with built-in ECC and MPU for code/data integrity, eliminating flash erase delays and enabling byte-level writes.

Analog functionality centers on the ADC10_B module (10-bit, 200 ksps, internal reference) and Comp_D (16-channel comparator with programmable hysteresis). Digital peripherals include a 32-bit hardware multiplier, three-channel DMA, and eUSCI modules supporting UART, SPI, and I²C protocols-each configurable independently.

Key Specifications

Pinout & Package

Package: 24-pin VQFN (RGE), 4 mm × 4 mm, 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 MCU applications.

Compared with MSP430FR5722IRGET, the MSP430FR5720IRGET trades FRAM capacity for cost-sensitive deployments; versus MSP430FR2355TRHBR, it prioritizes RTC accuracy and dual-serial flexibility over raw analog performance - making it optimal for time-stamped, low-duty-cycle sensor logging.

Availability

MSP430FR5720IRGET is available at Aetrix Electronics and suitable for industrial monitoring, smart metering, and portable safety devices requiring stable component supply and long-term lifecycle assurance.

Supply support for MSP430FR5720IRGET 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 battery-operated industrial endpoints - emphasizing FRAM reliability and sub-µA sleep modes.

FAQ

What is the maximum operating frequency of the MSP430FR5720IRGET?

The MSP430FR5720IRGET supports a maximum system clock frequency of 8 MHz, achievable via its digitally controlled oscillator (DCO) with six factory-trimmed frequencies, or through external crystal sources (LFXT or HFXT). This frequency is fully operational across the full 2 V–3.6 V supply range and –40°C to +85°C temperature range, enabling deterministic real-time execution in timing-critical sensor polling loops.

Does the MSP430FR5720IRGET include a hardware real-time clock (RTC)?

Yes, the MSP430FR5720IRGET integrates RTC_B, a calendar-mode real-time clock with alarm functionality that operates in LPM3.5 with a 32-kHz crystal, consuming only 1.5 µA typical. It supports time-of-day tracking, date, and programmable alarms - all while maintaining FRAM data integrity and enabling precise, low-power wake-up intervals for periodic sensor sampling.

How many analog input channels does the MSP430FR5720IRGET ADC support?

The MSP430FR5720IRGET features the ADC10_B module with 6 external analog input channels (A0–A5), plus two internal references (VeREF+ and VeREF−). This configuration is confirmed in Table 3-1 of the SLASE35C datasheet and matches the RGE package variant. The ADC delivers 10-bit resolution at 200 ksps with 100 µA active current, optimized for battery-constrained signal acquisition.

What debug interface does the MSP430FR5720IRGET support?

The MSP430FR5720IRGET supports Spy-Bi-Wire (SBW) via the RST/NMI/SBWTDIO and TEST/SBWTCK pins, enabling full JTAG-equivalent debugging and programming using TI's MSP-FET430U40A or compatible tools. SBW uses only two pins and requires no external voltage, making it ideal for space- and cost-sensitive designs where traditional 4-wire JTAG is impractical.

Is the MSP430FR5720IRGET pin-compatible with other devices in the FR572x family?

Yes, the MSP430FR5720IRGET shares identical pinout and package (24-pin RGE) with MSP430FR5722IRGET, MSP430FR5724IRGET, MSP430FR5726IRGET, and MSP430FR5728IRGET. All RGE-package variants use the same terminal configuration per Figure 4-3 and Table 4-1, allowing direct substitution where FRAM size or ADC channel count differences are acceptable.