Texas Instruments MSP430FG6626IZQWT

Overview

MSP430FG6626IZQWT from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller with integrated full-speed USB, 128KB flash, 8KB+2KB SRAM, 16-bit sigma-delta ADC (10 external analog inputs), dual 12-bit DACs, and LCD driver for up to 160 segments. It targets portable measurement systems requiring high analog integration and extended battery life.

For engineers reviewing the MSP430FG6626IZQWT datasheet, MSP430FG6626IZQWT pinout, MSP430FG6626IZQWT application, or MSP430FG6626IZQWT equivalent, key selection criteria include USB PHY integration, 113-pin MicroStar Junior™ BGA package, LPM3.5 RTC operation at 0.9 µA, and dual op-amp + quad ground switch signal conditioning capability.

Technical Context

The MSP430FG6626IZQWT implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) enabling sub-5-µs wake-up from low-power modes. Its unified clock system includes FLL stabilization, VLO, REFO, XT1 (32 kHz), and XT2 (up to 32 MHz) sources.

It integrates a continuous-time sigma-delta ADC with internal reference, two operational amplifiers, four USCIs (two UART/IrDA/SPI and two I²C/SPI), four 16-bit timers (including one with seven capture/compare registers), hardware multiplier, 6-channel DMA, and RTC with calibration logic - all optimized for metrology-grade small-signal monitoring.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FG6626IPZ, the ZQW variant offers higher I/O density and improved thermal performance in compact layouts; versus MSP430FG6426IZQW, it adds full-speed USB functionality at the cost of slightly reduced SRAM flexibility and higher unit price.

Availability

MSP430FG6626IZQWT is available at Aetrix Electronics and suitable for handheld medical diagnostics, portable test equipment, and industrial field transmitters requiring stable component supply and long-term lifecycle support.

Supply support for MSP430FG6626IZQWT 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 personal electronics markets.

The MSP430FG6626IZQWT belongs to TI's Metrology and Monitoring MCU portfolio, designed specifically for high-precision, battery-operated measurement applications demanding ultra-low power, integrated analog front-ends, and USB connectivity.

FAQ

What is the operating voltage range of the MSP430FG6626IZQWT?

The MSP430FG6626IZQWT operates from 1.8 V to 3.6 V. This wide supply range supports direct connection to single-cell Li-ion, Li-polymer, or alkaline battery sources without external regulation, enabling simplified power architecture in portable instruments. The integrated LDO allows programmable core voltage scaling to optimize active-mode current versus performance.

Does the MSP430FG6626IZQWT support USB device enumeration without external components?

Yes, the MSP430FG6626IZQWT includes a fully integrated USB 2.0 full-speed PHY, 3.3-V/1.8-V power system, USB-PLL, and endpoint controller. With only passive decoupling capacitors on VUSB and V18, and proper routing of DP/DM/PUR signals, the MSP430FG6626IZQWT achieves USB enumeration without transceivers, level shifters, or external clock sources.

How many analog inputs does the sigma-delta ADC on the MSP430FG6626IZQWT support?

The MSP430FG6626IZQWT features a 16-bit continuous-time sigma-delta ADC with 10 external analog input channels: six single-ended and four configurable as either single-ended or differential. Additionally, five internal inputs (e.g., VREFBG, temperature sensor) are available, bringing total ADC input capability to 15 distinct sources.

What is the function of the quad ground switches (G0SW0–G1SW1) on the MSP430FG6626IZQWT?

The quad low-impedance ground switches (G0SW0–G1SW1) on the MSP430FG6626IZQWT provide programmable, low-resistance (<1 Ω) connections between designated pins and DVSS. They enable dynamic grounding of sensor bridges, shunt resistors, or reference nodes to cancel offset drift, reduce leakage effects, and improve common-mode rejection in precision analog measurements.

Is the MSP430FG6626IZQWT still in active production given its ZQW package status?

Yes, the MSP430FG6626IZQWT remains orderable and supported by Texas Instruments. While TI designated all ZQW-package variants as "Last Time Buy" in September 2020, Aetrix Electronics maintains strategic inventory and lifecycle coordination to ensure continued supply for existing production programs through planned obsolescence management and alternative sourcing pathways.