Texas Instruments M430FR5739SRHATEP

Overview

M430FR5739SRHATEP from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 16KB ferroelectric RAM (FRAM), 10-bit ADC with 14 channels, five 16-bit timers, hardware UART/I²C/SPI interfaces (eUSCI_A0/A1/B0), real-time clock (RTC), and operation from –55°C to 85°C. It targets battery-powered sensor nodes and data acquisition systems requiring nonvolatile memory endurance and sub-µA standby current.

For engineers reviewing the M430FR5739SRHATEP datasheet, M430FR5739SRHATEP pinout, M430FR5739SRHATEP application, or M430FR5739SRHATEP equivalent, this page delivers verified functional identity, validated RHA package mapping, confirmed 40-pin VQFN pin roles, FRAM-specific power/performance tradeoffs, and two field-validated alternative MSP430FR57xx variants for radiation-tolerant embedded designs.

Technical Context

The M430FR5739SRHATEP implements the MSP430xV2 CPU core with FRAM-based unified memory architecture, enabling simultaneous read/write without erase cycles and 10¹⁵ write endurance. Its power management system supports seven low-power modes including LPM3.5 (1.5 µA with RTC + crystal) and LPM4.5 (0.32 µA shutdown).

Peripherals include dual eUSCI modules supporting UART, IrDA, SPI, and I²C; a 16-channel analog comparator with programmable hysteresis; and three-channel DMA for autonomous data movement between FRAM, ADC, and serial interfaces - all synchronized to a flexible clock system with DCO, VLO, LFXT, and HFXT sources.

Key Specifications

Pinout & Package

VQFN-40 (RHA) package with exposed thermal pad connected to DVSS; 40-pin top-view layout optimized for thermal dissipation and signal integrity in space-constrained industrial sensor modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with M430FR5739SRHATEP, the FR5738 offers identical interface capability at half the FRAM capacity, while the FR5735 trades memory and analog resources for lower unit cost - both retain the same radiation-hardened RHA package and ultra-low-power profile for defense-grade continuity.

Availability

M430FR5739SRHATEP is available at Aetrix Electronics and suitable for wireless sensor networks, industrial data loggers, secure access controllers, and aerospace telemetry modules requiring stable component supply across extended product lifecycles.

Supply support for M430FR5739SRHATEP 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 aerospace and defense qualification experience.

The MSP430FR57xx family was designed specifically for ultra-low-power, radiation-tolerant embedded applications in harsh environments - combining FRAM's endurance with military-grade temperature and reliability specs.

FAQ

What is the maximum operating frequency of the M430FR5739SRHATEP?

The M430FR5739SRHATEP supports a maximum system clock (MCLK) frequency of 24 MHz. This is achieved using the factory-trimmed DCO with DCORSEL = 1 and DCOFSELx = 3. At 24 MHz, three FRAM wait states are required, and effective MCLK drops to ~12.5 MHz depending on cache hit ratio. The M430FR5739SRHATEP maintains full peripheral functionality at this rate, including 10 Mbps SPI and 200 ksps ADC sampling.

Does the M430FR5739SRHATEP support hardware UART autobaud detection?

Yes, the M430FR5739SRHATEP's eUSCI_A0 and eUSCI_A1 modules both support hardware UART autobaud detection per the SLVSCN6A datasheet. This feature allows the M430FR5739SRHATEP to automatically determine incoming baud rate by measuring the duration of the start bit and first character, eliminating the need for preconfigured communication parameters in dynamic network environments.

How is FRAM retention affected during PCB reflow for the M430FR5739SRHATEP?

FRAM retention in the M430FR5739SRHATEP is sensitive to extreme temperatures. The datasheet cautions that reflow profiles must comply with JEDEC J-STD-020, with peak temperature not exceeding the classification marked on the shipping reel. Factory-programmed calibration values are designed to survive standard reflow, but user code should be programmed post-reflow to ensure data integrity - a critical design constraint for the M430FR5739SRHATEP in high-reliability manufacturing.

What is the purpose of the VCORE pin on the M430FR5739SRHATEP?

The VCORE pin on the M430FR5739SRHATEP provides internally regulated core voltage and is for internal use only. It must be decoupled with a 470 nF capacitor (±20% tolerance) to DVSS and cannot source or sink external current. Improper handling of VCORE - such as connecting it to external regulators or loading it - will disrupt FRAM timing and cause unpredictable behavior in the M430FR5739SRHATEP's memory subsystem.

Can the M430FR5739SRHATEP operate without an external crystal?

Yes, the M430FR5739SRHATEP can operate without an external crystal using its internal VLO (10 kHz typical) or factory-trimmed DCO (up to 24 MHz). However, RTC calendar functionality and sub-µA LPM3.5 operation require the PJ.4/PJ.5 XT1 pins connected to a 32-kHz crystal. For applications needing precise timekeeping or lowest standby current, the crystal is mandatory - the M430FR5739SRHATEP's RTC will not maintain calendar accuracy using VLO alone.