Texas Instruments MSP430FG6626IZCAT

Overview

MSP430FG6626IZCAT from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring a 16-bit sigma-delta ADC, dual 12-bit DACs, integrated full-speed USB, LCD driver for up to 160 segments, and dual operational amplifiers. It operates from 1.8 V to 3.6 V, delivers 250 µA/MHz active current at 8 MHz, and supports real-time clock operation in LPM3.5 mode (0.9 µA). It targets portable measurement systems such as handheld medical diagnostic meters.

For engineers reviewing the MSP430FG6626IZCAT datasheet, MSP430FG6626IZCAT pinout, MSP430FG6626IZCAT application, or MSP430FG6626IZCAT equivalent, key selection criteria include USB integration, 16-bit ADC performance with differential input support, low-power RTC retention, LCD segment drive capability, and compatibility with TI's MSP-TS430PZ100AUSB development board.

Technical Context

The MSP430FG6626IZCAT implements a 16-bit RISC CPU with constant generators and hardware multiplier supporting 32-bit operations. Its unified clock system includes FLL, VLO, REFO, XT1 (32 kHz), and XT2 (up to 32 MHz), enabling precise frequency stabilization and fast wake-up (<5 µs) from LPM modes.

It integrates four USCI modules (two UART/IrDA/SPI and two SPI/I²C), six-channel DMA, four 16-bit timers (including one with seven capture/compare registers), and a battery-backed RTC with calibration logic - all optimized for signal acquisition, processing, and display in battery-constrained metrology applications.

Key Specifications

Pinout & Package

Package: 113-pin nFBGA (ZCA), 7 mm × 7 mm, ball pitch 0.5 mm, compatible with standard PCB assembly processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FG6626IPZ, the MSP430FG6626IZCAT offers superior thermal dissipation and smaller footprint in production volumes; compared with MSP430FG6426IZCA, it provides full USB integration-reducing external component count and enabling direct PC-based calibration without transceiver design effort.

Availability

MSP430FG6626IZCAT is available at Aetrix Electronics and suitable for handheld medical diagnostic meters, portable power quality analyzers, and industrial handheld testers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430FG6626IZCAT 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 specializing in analog, embedded processing, and connectivity technologies with decades of expertise in ultra-low-power microcontrollers.

The MSP430FG662x product line is designed for metrology and monitoring applications demanding high analog integration, precision timing, and extended battery life in portable measurement equipment.

FAQ

What is the maximum system clock frequency supported by the MSP430FG6626IZCAT?

The MSP430FG6626IZCAT supports a maximum system clock frequency of 20 MHz, enabled by its integrated FLL and high-frequency crystal oscillator (XT2) supporting up to 32 MHz input. This allows real-time processing of high-resolution ADC data streams while maintaining sub-microsecond timer resolution for precise event capture in metrology applications. The MSP430FG6626IZCAT achieves this performance within its ultra-low-power architecture without requiring external PLL circuitry.

Does the MSP430FG6626IZCAT support differential analog input configurations on its sigma-delta ADC?

Yes, the MSP430FG6626IZCAT's 16-bit continuous-time sigma-delta ADC supports differential input configurations on four of its ten external analog inputs (AD0±, AD1±, AD2±, AD3±), as confirmed in the device comparison table and pin attribute documentation. These differential pairs are mapped to dedicated pins (e.g., P6.4/P6.5 for AD0±) and provide enhanced noise immunity for low-level sensor signals. The MSP430FG6626IZCAT also supports internal reference selection and programmable gain settings to optimize dynamic range.

How does the USB functionality of the MSP430FG6626IZCAT differ from that of the MSP430FG6426IZCA?

The MSP430FG6626IZCAT integrates a full-speed USB 2.0 PHY, dedicated 3.3-V and 1.8-V USB power system, and USB-PLL - enabling direct USB connectivity without external components. In contrast, the MSP430FG6426IZCA lacks all USB hardware blocks and requires an external transceiver. This makes the MSP430FG6626IZCAT uniquely suited for applications needing plug-and-play PC communication, such as field calibration tools or data loggers where USB simplifies firmware updates and measurement export.

What is the role of the backup subsystem in the MSP430FG6626IZCAT, and which resources does it protect?

The backup subsystem in the MSP430FG6626IZCAT provides independent power domains (AVSS/AVCC) for the 32-kHz XT1 oscillator, RTC_B module, and 8 bytes of backup RAM. It remains operational during main power loss or deep shutdown (LPM4.5), preserving real-time clock continuity and critical calibration data. This ensures the MSP430FG6626IZCAT maintains accurate time stamps and retains non-volatile configuration parameters without external supercapacitors or coin-cell batteries - a key advantage in sealed medical or industrial enclosures.

Can the MSP430FG6626IZCAT's dual operational amplifiers be configured for instrumentation amplifier topologies?

Yes, the MSP430FG6626IZCAT's dual operational amplifiers (OA0 and OA1) support instrumentation amplifier configurations using external resistors, as their inputs and outputs are accessible on dedicated pins (e.g., OA0IN0, OA0O, OA1IN0, OA1O) with rail-to-rail operation and low input bias current. While the device does not integrate fixed-gain instrumentation amplifier circuitry, the pinout and electrical specifications (e.g., 100 dB CMRR, 0.5 mV offset) allow robust discrete IA implementation - commonly used in the MSP430FG6626IZCAT for high-accuracy bridge sensor conditioning in handheld test equipment.