Texas Instruments MSP430FR5734IRGET

Overview

MSP430FR5734IRGET from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 8KB FRAM nonvolatile memory, 1KB RAM, 24-MHz system clock, 6-channel 10-bit ADC, and 10-channel analog comparator. It integrates eUSCI_A0 (UART/IrDA/SPI), eUSCI_B0 (I²C/SPI), three 16-bit timers, RTC with calendar, and operates from 2 V to 3.6 V across –40°C to 85°C - deployed in battery-powered sensor nodes and energy-harvesting data loggers.

For engineers reviewing the MSP430FR5734IRGET datasheet, MSP430FR5734IRGET pinout, MSP430FR5734IRGET application, or MSP430FR5734IRGET equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), LPM3.5 RTC current (1.5 µA), 24-pin VQFN package footprint, integrated hardware multiplier, and eUSCI peripheral flexibility for low-power wired communication interfaces.

Technical Context

The MSP430FR5734IRGET implements the MSP430 CPUXV2 core with 16-bit RISC architecture and supports seven low-power modes including LPM4.5 (0.32 µA shutdown). Its FRAM memory replaces both flash and RAM, enabling simultaneous read/write, zero-wait-state execution, and built-in ECC/MPU protection.

Peripherals are tightly coupled via three-channel DMA and synchronized to multiple clock domains: MCLK (up to 24 MHz), SMCLK, and ACLK (32-kHz crystal or VLO). The device uses Spy-Bi-Wire (SBW) for debug and programming, and includes an on-chip LDO, SVS, and BOR for robust power management.

Key Specifications

Pinout & Package

Package: 24-pin VQFN (RGE), 4 mm × 4 mm body, 0.5-mm pitch, exposed thermal pad (recommended connection to DVSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR5735IRGET, the MSP430FR5734IRGET reduces analog I/O count while maintaining identical power profile and FRAM performance; versus MSP430FR2476TRHBR, it trades package size and ADC resolution for superior RTC accuracy, comparator programmability, and lower system-level BOM cost in compact sensor endpoints.

Availability

MSP430FR5734IRGET is available at Aetrix Electronics and suitable for wireless sensor nodes, energy-harvesting data loggers, smart meter tamper detection, and industrial condition monitors requiring stable component supply and long-term lifecycle support.

Supply support for MSP430FR5734IRGET 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 targets ultra-low-power sensing and system management in building automation, smart grid, and industrial designs - emphasizing FRAM-based reliability, sub-µA sleep currents, and integrated analog peripherals for battery-constrained edge devices.

FAQ

What is the maximum system clock frequency supported by the MSP430FR5734IRGET?

The MSP430FR5734IRGET supports a maximum system clock frequency of 24 MHz, achieved via its factory-trimmed DCO oscillator or external HFXT crystal. This frequency enables real-time signal processing and fast peripheral response while maintaining compatibility with the MSP430's ultra-low-power architecture. All timing specifications in the datasheet - including ADC conversion rate and eUSCI baud rates - are validated up to this 24-MHz limit for the MSP430FR5734IRGET.

Does the MSP430FR5734IRGET include a hardware real-time clock (RTC) module?

Yes, the MSP430FR5734IRGET integrates the RTC_B module with calendar functionality, alarm capability, and dedicated 32-kHz crystal support (via PJ.4/XIN and PJ.5/XOUT). In LPM3.5 mode with crystal enabled, it draws only 1.5 µA typical - making it ideal for time-stamped data logging. The RTC_B also provides calibration registers and direct integration with the FRAM-based event buffer in the MSP430FR5734IRGET.

How many analog-to-digital converter (ADC) channels does the MSP430FR5734IRGET support?

The MSP430FR5734IRGET features a 10-bit ADC10_B module with 6 external analog input channels (A0–A5) plus 2 internal channels (temperature sensor and VMID), totaling 8 usable inputs. This configuration is confirmed in Table 3-1 of the SLAS639L datasheet and aligns with the RGE-package variant specification. The ADC achieves 200 ksps throughput at 100 µA, and all channels are accessible through P1.x pins on the MSP430FR5734IRGET.

What debug interface does the MSP430FR5734IRGET use, and how many pins are required?

The MSP430FR5734IRGET uses the Spy-Bi-Wire (SBW) interface, requiring only two pins: RST/NMI/SBWTDIO (bidirectional data) and TEST/SBWTCK (clock). This two-wire protocol replaces full JTAG, reducing PCB footprint and routing complexity. SBW is fully supported by MSP-FET and Code Composer Studio for programming, debugging, and flash/FRAM memory inspection on the MSP430FR5734IRGET.

Is the FRAM memory in the MSP430FR5734IRGET protected against unauthorized access?

Yes, the MSP430FR5734IRGET includes a Memory Protection Unit (MPU) that enforces privilege-level access control over FRAM regions. The MPU supports segmentation, read/write/execute permissions, and lock bits to prevent unintended or malicious modification of code or critical data stored in the 8KB FRAM. This hardware-enforced protection is active independently of software state and applies specifically to the MSP430FR5734IRGET's integrated FRAM array.