Texas Instruments MSP430F5234IRGZT

Overview

MSP430F5234IRGZT from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 128 KB flash, 8 KB RAM, three 16-bit Timer_A modules (5/3/3 capture/compare registers), one 16-bit Timer_B (7 registers), two USCI modules (UART/IrDA/SPI/I²C), RTC, comparator, and hardware multiplier - designed for battery-powered sensor nodes and data loggers operating from 1.8 V to 3.6 V.

For engineers reviewing the MSP430F5234IRGZT datasheet, MSP430F5234IRGZT pinout, MSP430F5234IRGZT application, or MSP430F5234IRGZT equivalent, key selection criteria include LPM3 standby current (1.9 µA at 3.0 V), 3.5 µs wake-up time, RGZ-48 package compatibility, absence of integrated ADC, and peripheral set alignment with MSP430F523x series requirements.

Technical Context

The MSP430F5234IRGZT implements a CPUXV2 core with constant generators and 16-bit RISC architecture, supporting up to 25 MHz system clock via FLL-stabilized DCO or external crystals (XT1 up to 32 kHz, XT2 up to 32 MHz). Its unified clock system includes REFO and VLO internal sources for low-power operation.

Power management integrates a programmable LDO core regulator, supply voltage supervisor (SVS), brownout reset (BOR), and four low-power modes (LPM0–LPM4.5) with full RAM retention in LPM3/LPM4. The device lacks ADC10_A but retains all other peripherals from the F524x series except the 10-bit ADC and associated analog inputs.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5232IRGZT, the MSP430F5234IRGZT offers double flash capacity for feature-rich firmware or field-upgrade headroom; compared with MSP430F5244IRGZT, it removes ADC-related design constraints while maintaining identical digital peripheral performance and power profile.

Availability

MSP430F5234IRGZT is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial data loggers, and smart meter interface modules requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for MSP430F5234IRGZT 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The MSP430F5234IRGZT belongs to TI's ultra-low-power MCU product line, engineered specifically for extended-battery-life applications in sensing, metering, and portable instrumentation where sub-µA standby and fast wake-up are critical.

FAQ

What is the maximum system clock frequency supported by the MSP430F5234IRGZT?

The MSP430F5234IRGZT supports a maximum system clock frequency of 25 MHz. This is achieved using the digitally controlled oscillator (DCO) with FLL stabilization or an external high-frequency crystal (XT2) up to 32 MHz. The device's CPUXV2 core and peripherals are fully rated for operation at this speed, enabling high-throughput data processing in time-critical sensor applications while maintaining ultra-low power in active mode (290 µA/MHz at 8 MHz, 3.0 V).

Does the MSP430F5234IRGZT include an analog-to-digital converter (ADC)?

No, the MSP430F5234IRGZT does not include an integrated ADC. It belongs to the MSP430F523x series, which omits the 10-bit ADC10_A module present in the F524x series. This design choice reduces silicon area, leakage current, and analog routing complexity - making the MSP430F5234IRGZT ideal for purely digital sensor interfaces, pulse counting, or systems using external precision ADCs where on-chip conversion is unnecessary or undesirable for power/noise reasons.

What package type and pin count does the MSP430F5234IRGZT use?

The MSP430F5234IRGZT uses a 48-pin VQFN package (RGZ) with a 7 mm × 7 mm body size and an exposed thermal pad. Pin functions include three Timer_A modules, one Timer_B, two USCI serial interfaces, RTC, comparator, and Spy-Bi-Wire debug. The RGZ package is footprint-compatible with MSP430F5242IRGZT and MSP430F5232IRGZT, enabling scalable design reuse across memory and feature variants.

How does the power management system of the MSP430F5234IRGZT support battery-operated devices?

The MSP430F5234IRGZT integrates a programmable LDO core regulator, supply voltage supervisor (SVS), and brownout reset (BOR) to autonomously manage power across wide input ranges (1.8 V–3.6 V). Its LPM3 mode draws just 1.9 µA at 3.0 V with RTC active, and LPM4.5 draws 0.18 µA - enabling multi-year operation on coin cells. Fast 3.5 µs wake-up from LPM3 ensures minimal active time during sensor sampling, directly translating to extended battery service life in intermittent-use applications.

Can the MSP430F5234IRGZT be programmed in-system without external voltage?

Yes, the MSP430F5234IRGZT supports serial onboard programming (SBP) via Spy-Bi-Wire (SBW) using only the TEST/SBWTCK, RSTDVCC/SBWTDIO, RST/NMI, and DVSS pins - no external programming voltage (VPP) is required. This enables field firmware updates and production programming with minimal interface overhead. The integrated LDO ensures stable core voltage during programming, and the bootloader (BSL) supports UART- or SBW-based firmware loading without dedicated debug hardware.