Texas Instruments MSP430F5342IRGZR

Overview

MSP430F5342IRGZR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 128 KB Flash, 10 KB RAM, and a 25-MHz system clock. It integrates four 16-bit timers (TA0/TA1/TA2/TB0), dual USCI modules supporting UART/IrDA/SPI/I²C, a 12-bit ADC with autoscan and internal reference, RTC, hardware multiplier, and 3-channel DMA. It targets battery-powered sensor nodes and data loggers requiring sub-2 µA standby current and fast 3.5 µs wake-up.

For engineers reviewing the MSP430F5342IRGZR datasheet, MSP430F5342IRGZR pinout, MSP430F5342IRGZR application, or MSP430F5342IRGZR equivalent, key selection criteria include its VQFN-48 package, 38 GPIOs with analog/comparator capability, LPM3 current of 1.9 µA at 3 V, 128 KB Flash density, and dual-USCI interface flexibility for sensor-to-host communication.

Technical Context

The MSP430F5342IRGZR implements a 16-bit RISC CPUXV2 core with constant generator and unified clock system including FLL-stabilized DCO, REFO, VLO, XT1 (32 kHz), and XT2 (up to 32 MHz). Its power management includes programmable LDO core regulation (PMMCOREVx = 0–3), SVS/SVM, and brownout reset - enabling dynamic voltage/frequency scaling across four operating modes (AM/LPM0–LPM4.5).

Peripherals are tightly coupled via shared memory-mapped registers and DMA channels: the 12-bit ADC12_A supports up to 9 channels (7 external, 2 internal) with sample-and-hold and autoscan; Comparator_B provides five independent inputs; and Timer_B0 offers seven capture/compare registers with shadowing for glitch-free PWM generation in motor control or LED dimming.

Key Specifications

Pinout & Package

VQFN-48 (RGZ) package, 7 mm × 7 mm body size, with exposed thermal pad recommended to be connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5338IRGZR and MSP430F5329IRGZR, the MSP430F5342IRGZR provides highest Flash/RAM headroom and identical low-power performance - making it optimal for field-upgradable firmware, complex sensor fusion, or designs requiring long-term feature expansion.

Availability

MSP430F5342IRGZR is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial data loggers, and portable medical monitors requiring stable component supply and long-lifecycle support.

Supply support for MSP430F5342IRGZR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The MSP430F534x product line was designed specifically for ultra-low-power measurement and sensing applications - emphasizing extended battery life, precision analog integration, and robust real-time operation in harsh environments.

FAQ

What is the maximum system clock frequency supported by the MSP430F5342IRGZR?

The MSP430F5342IRGZR supports a maximum system clock (MCLK) frequency of 25 MHz when operating at VCC ≥ 2.4 V and PMMCOREVx = 3. At lower supply voltages, the maximum frequency scales down: 20 MHz at 2.2 V, 12 MHz at 2.0 V, and 8 MHz at 1.8 V - ensuring safe operation across its full 1.8–3.6 V range. This is confirmed in Section 5.3 of the SLAS706F datasheet.

Does the MSP430F5342IRGZR include an integrated real-time clock (RTC)?

Yes, the MSP430F5342IRGZR integrates RTC_A - a full-featured real-time clock module with calendar mode, alarm interrupt, and battery-backup capability. It operates from the 32.768 kHz XT1 crystal (P5.4/P5.5) and retains time/date during LPM3 with only 1.9 µA current draw. The RTC_A module is documented in Section 6.9.3 of the MSP430F5xx Family User's Guide.

How many analog input channels does the MSP430F5342IRGZR ADC support?

The MSP430F5342IRGZR features the ADC12_A module with support for 9 total analog input channels: 7 external (A1–A5, A8–A9) and 2 internal (temperature sensor and VMID). Channel mapping is fixed per pin - for example, P6.1 = A1, P6.2 = A2, P6.3 = A3, P6.4 = A4, P6.5 = A5, P5.0 = A8, and P5.1 = A9 - as defined in Table 4-1 of the SLAS706F datasheet.

What debug interface does the MSP430F5342IRGZR use, and is external hardware required?

The MSP430F5342IRGZR supports both 4-wire JTAG and 2-wire Spy-Bi-Wire (SBW) debug interfaces using dedicated pins (PJ.0–PJ.3 and RST/NMI/SBWTDIO). SBW mode requires only two pins and is enabled by default - allowing full in-system programming and debugging without external voltage or additional hardware beyond a standard TI debugger (e.g., MSP-FET).

Can the MSP430F5342IRGZR operate from a single 1.8-V supply?

Yes, the MSP430F5342IRGZR is fully specified for operation from 1.8 V to 3.6 V. At 1.8 V, it supports up to 8 MHz MCLK (PMMCOREVx = 0), delivers 290 µA/MHz active current, and maintains 1.9 µA LPM3 current - meeting all electrical specifications in Section 5.3 of SLAS706F. This makes it suitable for single-cell Li-ion or alkaline battery systems without external regulators.