Texas Instruments M430F5438AMGQWTEP

Overview

M430F5438AMGQWTEP from Texas Instruments is an ultralow-power 16-bit RISC microcontroller designed for extended-battery-life embedded measurement systems. It integrates 256 KB flash, 16 KB RAM, a 12-bit ADC with 14 external/2 internal channels, three 16-bit timers (TA0/TA1/TB0), four USCI modules supporting UART/IrDA/SPI/I²C, and operates across –55°C to 125°C. It is deployed in radiation-tolerant aerospace telemetry nodes requiring deterministic low-power wake-up and analog sensor interfacing.

For engineers reviewing the M430F5438AMGQWTEP datasheet, M430F5438AMGQWTEP pinout, M430F5438AMGQWTEP application, or M430F5438AMGQWTEP equivalent, key selection criteria include its EP-grade extended temperature range, integrated LDO core regulation, 3.5 µs LPM3 wake-up time, and dual crystal support (32 kHz + up to 32 MHz XT2) for precision timing in harsh environments.

Technical Context

The M430F5438AMGQWTEP implements a unified clock system with FLL stabilization, programmable LDO core voltage (VCORE), and independent ACLK/SMCLK/MCLK domains. Its DMA controller supports three-channel memory-to-peripheral transfers without CPU intervention, enabling continuous ADC sampling while preserving low-power operation.

It features a hardware multiplier for 32-bit arithmetic acceleration and a real-time clock module with alarm and calendar functions. All four USCI_A modules support enhanced UART with auto-baud detection and IrDA encoding, while USCI_B modules provide I²C master/slave and SPI with configurable polarity/phase-critical for interoperability with legacy avionics sensors and bus controllers.

Key Specifications

Pinout & Package

Package: 100-pin PBGA (GQW), 9 × 9 mm, 0.8 mm pitch, thermally enhanced for high-reliability PCB mounting in conduction-cooled systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5438AMPZREP and MSP430F6638IPZ, the M430F5438AMGQWTEP uniquely delivers radiation-tolerant extended temperature operation, controlled baseline manufacturing, and product traceability-making it the sole option for DoD/Aerospace programs requiring long-term supply assurance and failure analysis traceability.

Availability

M430F5438AMGQWTEP is available at Aetrix Electronics and suitable for aerospace telemetry, radiation-hardened medical monitors, and defense-grade watchdog modules requiring stable component supply across extended product lifecycles.

Supply support for M430F5438AMGQWTEP 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 digital signal technologies with deep heritage in space-qualified components.

The MSP430F5438A-EP product line was engineered specifically for defense, aerospace, and medical applications requiring extended temperature operation, controlled baseline manufacturing, and full product traceability across the supply chain.

FAQ

What is the maximum guaranteed operating frequency of the M430F5438AMGQWTEP?

The M430F5438AMGQWTEP supports a maximum system clock of 25 MHz across its full –55°C to 125°C operating range. While the unified clock system permits configuration up to 32 MHz using the XT2 oscillator, TI specifies that crystal operation above 85°C is not ensured-so 25 MHz is the highest frequency fully characterized and guaranteed for extended temperature use.

Does the M430F5438AMGQWTEP include a hardware AES encryption engine?

No, the M430F5438AMGQWTEP does not include a hardware AES encryption engine. It provides no cryptographic accelerators. Security relies on software-based implementations or external secure elements. The device does include a hardware CRC16 module for data integrity checking, but no dedicated cipher engines are present in its peripheral set.

Can the M430F5438AMGQWTEP operate without external crystals?

Yes, the M430F5438AMGQWTEP can operate without external crystals using its internal digitally controlled oscillator (DCO) and very-low-power oscillator (VLO). The DCO supports frequencies up to 25 MHz with FLL stabilization, and the VLO provides ~12 kHz for LPM3 RTC operation-enabling full functionality in crystal-free designs where timing precision is secondary to power or BOM simplicity.

What is the purpose of the VCORE pin on the M430F5438AMGQWTEP?

The VCORE pin on the M430F5438AMGQWTEP is the output of the internal LDO regulator, providing a stable 1.8-V core supply. It is for internal use only: no external current loading is permitted, and it must be decoupled solely with a 2.2-µF capacitor. Connecting loads or probing VCORE risks violating specifications and may cause functional failure or reduced reliability.

How many independent I²C interfaces does the M430F5438AMGQWTEP support?

The M430F5438AMGQWTEP supports four independent I²C interfaces via its USCI_B0 through USCI_B3 modules. Each USCI_B instance can be configured as an I²C master or slave with separate address recognition, clock stretching, and interrupt vectors-enabling concurrent communication with multiple I²C sensors, EEPROMs, or PMICs without software arbitration overhead.