Texas Instruments MSP430FG6426IZQWR

Overview

MSP430FG6426IZQWR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring a 16-bit sigma-delta ADC with 10 external analog inputs, dual 12-bit DACs, integrated LCD driver for up to 160 segments, and four USCI modules (two UART/IrDA/SPI and two I²C/SPI). It operates from 1.8 V to 3.6 V and targets battery-powered measurement systems such as handheld medical diagnostic meters and industrial field testers.

For engineers reviewing the MSP430FG6426IZQWR datasheet, MSP430FG6426IZQWR pinout, MSP430FG6426IZQWR application, or MSP430FG6426IZQWR equivalent, key selection considerations include its 128 KB flash/10 KB SRAM configuration, MicroStar Junior™ BGA-113 package, absence of USB peripheral (distinguishing it from FG662x), and verified low-power modes including 0.9 µA RTC-active LPM3.5 and 0.2 µA shutdown LPM4.5.

Technical Context

The MSP430FG6426IZQWR implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) enabling sub-5 µs wake-up from LPM3. Its unified clock system integrates FLL stabilization, VLO and REFO internal sources, XT1 (32 kHz), and XT2 (up to 32 MHz) crystal support. Power management includes a programmable LDO core regulator and supply supervision with brownout detection.

Peripherals are optimized for sensor signal chain integration: the CTSD16 ADC supports 10 external single-ended or 4 differential analog inputs with internal reference; dual OA amplifiers and quad ground switches enable precision front-end conditioning; and the RTC_B module includes calibration logic for time offset correction while operating in LPM3.5 with crystal backup.

Key Specifications

Pinout & Package

Package: MicroStar Junior™ BGA-113 (7 mm × 7 mm), RoHS-compliant, lead-free, ball pitch 0.5 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FG6426IPZ, the MSP430FG6426IZQWR provides identical functionality in a smaller 7 mm × 7 mm BGA package ideal for miniaturized instruments, while MSP430FG6626IZQW trades away BGA size advantage for USB integration - making FG6426IZQWR optimal for space-constrained, USB-free metrology designs.

Availability

MSP430FG6426IZQWR is available at Aetrix Electronics and suitable for handheld medical diagnostic meters, industrial field transmitters, and portable energy monitoring equipment requiring stable component supply and long-term manufacturability.

Supply support for MSP430FG6426IZQWR 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 for industrial, automotive, and consumer applications.

The MSP430FG6426IZQWR belongs to TI's Metrology and Monitoring portfolio, designed specifically for ultra-low-power, high-precision measurement systems where analog integration, battery longevity, and compact packaging are critical.

FAQ

What is the maximum operating frequency of the MSP430FG6426IZQWR?

The MSP430FG6426IZQWR supports a maximum system clock frequency of 20 MHz, enabled by its digitally controlled oscillator (DCO) and unified clock system with FLL stabilization. This frequency is achievable across the full 1.8 V to 3.6 V supply range and is used for high-speed ADC sampling, real-time computation, and LCD refresh. The device also supports lower-frequency clocks (e.g., 32 kHz XT1 for RTC) to minimize power consumption during idle periods.

Does the MSP430FG6426IZQWR include USB functionality?

No, the MSP430FG6426IZQWR does not include USB functionality. It belongs to the FG642x subfamily, which omits the integrated USB-PHY, USB power system, and USB-PLL found in the FG662x series. The MSP430FG6426IZQWR instead emphasizes analog integration (sigma-delta ADC, dual DACs, dual OAs) and ultra-low-power operation for metrology applications where USB connectivity is unnecessary.

What package type is used for the MSP430FG6426IZQWR?

The MSP430FG6426IZQWR uses the MicroStar Junior™ BGA-113 package (7 mm × 7 mm, 0.5 mm ball pitch). This compact, RoHS-compliant package is optimized for space-constrained portable instrumentation. Pin assignments match those of the ZCA variant, and documentation confirms full functional equivalence between ZQW and ZCA for the FG6426 family.

How much SRAM and flash memory does the MSP430FG6426IZQWR have?

The MSP430FG6426IZQWR integrates 128 KB of on-chip flash memory and 10 KB of SRAM. The flash supports in-system programming and segment erase; the SRAM is fully retained in LPM3 standby mode (3.2 µA). This memory configuration accommodates complex metrology algorithms, calibration tables, and buffered sensor data - sufficient for handheld diagnostic and field test equipment firmware.

What low-power modes are supported by the MSP430FG6426IZQWR?

The MSP430FG6426IZQWR supports five low-power modes, including LPM3 (3.2 µA @ 2.2 V), LPM3.5 (0.9 µA @ 3.0 V with active RTC + crystal), and LPM4.5 (0.2 µA @ 3.0 V shutdown). These modes enable extended battery life in portable instruments: LPM3.5 maintains real-time clock operation during deep sleep, while LPM4.5 disables all clocks and RAM retention except for the 8-byte backup RAM - ideal for years-long storage of calibration or event counters.