Texas Instruments MSP430F5342IRGZT

Overview

MSP430F5342IRGZT from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 128 KB Flash, 10 KB RAM, four 16-bit timers (including Timer_A with five capture/compare registers and Timer_B with seven), dual USCI modules supporting UART/IrDA/SPI/I²C, and a 12-bit ADC with autoscan for analog sensor interfacing in battery-powered data loggers.

For engineers reviewing the MSP430F5342IRGZT datasheet, MSP430F5342IRGZT pinout, MSP430F5342IRGZT application, or MSP430F5342IRGZT equivalent, key selection criteria include its 38 GPIOs in VQFN-48 package, LPM4.5 shutdown current of 0.18 µA at 3 V, RTC-enabled standby mode (1.9 µA), and dual-USCI support for simultaneous wired communication interfaces in space-constrained embedded systems.

Technical Context

The MSP430F5342IRGZT implements a CPUXV2 core with 16-bit RISC architecture and constant generator for high code efficiency. Its unified clock system integrates FLL-based frequency stabilization, dual crystal oscillators (XT1 for 32-kHz RTC, XT2 up to 32 MHz), and low-power internal sources (VLO, REFO) enabling dynamic clock gating across operating modes.

Power management includes a fully integrated LDO with programmable core voltage (PMMCOREVx = 0–3), supply voltage supervision (SVS/SVM), brownout reset, and five low-power modes (LPM0–LPM4.5) with sub-µA retention currents. The 38 I/O pins support configurable drive strength, Schmitt-trigger inputs, and reconfigurable port mapping for flexible peripheral routing.

Key Specifications

Pinout & Package

VQFN-48 (RGZ) package with exposed thermal pad; requires connection of thermal pad to DVSS for optimal thermal performance and electrical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5342IRGZT, MSP430F5329IRGZT offers identical low-power operation and pin compatibility but lacks RTC and half the memory, while MSP430F6736AIPZ adds metrology-specific analog features and larger package-neither is pin-compatible, but both serve adjacent ultra-low-power niches with distinct precision or integration trade-offs.

Availability

MSP430F5342IRGZT is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial data loggers, portable medical devices, and smart building controllers requiring stable component supply across extended production lifecycles.

Supply support for MSP430F5342IRGZT 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 with emphasis on energy efficiency and reliability.

The MSP430F534x product line targets ultra-low-power portable measurement applications, integrating precision analog peripherals, multiple low-power timers, and robust power management to maximize battery life in sensing and data acquisition systems.

FAQ

What is the maximum system clock frequency supported by the MSP430F5342IRGZT?

The MSP430F5342IRGZT supports up to 25 MHz MCLK when PMMCOREVx = 3 and VCC ≥ 2.4 V. At lower core voltages (e.g., PMMCOREVx = 0), the maximum frequency is 8 MHz with VCC ≥ 1.8 V. These limits are enforced by hardware to ensure timing compliance and stable operation across temperature and voltage ranges.

Does the MSP430F5342IRGZT include a real-time clock (RTC) module?

Yes, the MSP430F5342IRGZT includes the RTC_A module with calendar functionality, alarm capability, and dedicated 32-kHz crystal support via P5.4/XIN and P5.5/XOUT pins. It operates in LPM3 with only 1.9 µA current draw at 3 V, enabling accurate timekeeping during ultra-low-power standby.

How many analog input channels does the MSP430F5342IRGZT ADC support?

The MSP430F5342IRGZT ADC12_A module supports nine total channels: seven external analog inputs (A0–A6 mapped to P6.x/P5.x pins) and two internal sources (temperature sensor and VMID). Channel selection is managed via the ADC12MCTLx registers, and autoscan mode enables sequential conversion without CPU intervention.

What communication interfaces are integrated into the MSP430F5342IRGZT?

The MSP430F5342IRGZT integrates two Universal Serial Communication Interfaces (USCI): USCI_A0 and USCI_A1 support UART, IrDA, and SPI; USCI_B0 and USCI_B1 support I²C and SPI. This allows concurrent use of UART for debugging, I²C for sensor communication, and SPI for memory or display interfaces-all without external bridging logic.

Is the MSP430F5342IRGZT pin-compatible with other members of the MSP430F534x family?

Yes, the MSP430F5342IRGZT shares identical VQFN-48 (RGZ) packaging and pinout with MSP430F5341IRGZT and MSP430F5340IRGZT. All three devices maintain functionally equivalent I/O mapping, allowing hardware design reuse across memory variants-only Flash/RAM sizes and certain peripheral enable bits differ.