Texas Instruments MSP430FG6426IPZR

Overview

MSP430FG6426IPZR 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 + two I²C/SPI). It operates from 1.8 V to 3.6 V and delivers 250 µA/MHz active current at 8 MHz, targeting portable measurement systems requiring high analog integration and extended battery life.

For engineers reviewing the MSP430FG6426IPZR datasheet, MSP430FG6426IPZR pinout, MSP430FG6426IPZR application, or MSP430FG6426IPZR equivalent, key selection criteria include its 128 KB flash / 10 KB SRAM memory configuration, absence of integrated USB (distinguishing it from FG662x), LQFP-100 package with 73 GPIOs, and RTC operation in LPM3.5 shutdown mode at 0.9 µA.

Technical Context

The MSP430FG6426IPZR 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 integrates FLL stabilization, VLO and REFO internal sources, XT1 (32 kHz), and XT2 (up to 32 MHz) crystal support.

It features five low-power modes (LPM0–LPM4.5), including LPM3.5 with RTC active and full RAM retention, and LPM4.5 with 0.2 µA shutdown current. The analog subsystem includes dual op-amps, quad ground switches, voltage comparator, and CTSD16 ADC with 14 total inputs (6 single-ended external, 4 selectable SE/diff external, 4 internal).

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FG6626IPZR, the MSP430FG6426IPZR trades USB capability for larger main SRAM and lower active power, while versus MSP430FR6989IPZ it prioritizes analog integration and display support over nonvolatile write performance-making it optimal for battery-powered metrology with local display.

Availability

MSP430FG6426IPZR is available at Aetrix Electronics and suitable for hand-held medical diagnostic meters, industrial field transmitters, and portable power quality analyzers requiring stable component supply and long-term production continuity.

Supply support for MSP430FG6426IPZR 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 MSP430FG6426IPZR belongs to TI's Metrology and Monitoring portfolio, designed specifically for high-precision, battery-operated measurement equipment where analog integration, low-power operation, and display capability are critical.

FAQ

What is the maximum operating frequency of the MSP430FG6426IPZR?

The MSP430FG6426IPZR supports a system clock up to 20 MHz via its FLL-controlled DCO or external XT2 crystal (up to 32 MHz). At 8 MHz, typical active-mode current is 250 µA/MHz, confirming stable operation across its rated frequency range. The MSP430FG6426IPZR achieves this with integrated LDO regulation and clock stabilization logic.

Does the MSP430FG6426IPZR include USB functionality?

No, the MSP430FG6426IPZR does not include USB hardware. Unlike the MSP430FG6626IPZR, it lacks an integrated USB PHY, USB power system, and USB-PLL. This omission reduces power consumption and simplifies layout-confirming its positioning as a non-USB metrology MCU within the FG642x family.

How many analog inputs does the CTSD16 ADC support on the MSP430FG6426IPZR?

The CTSD16 ADC on the MSP430FG6426IPZR supports 14 total inputs: 6 external single-ended, 4 external inputs configurable as either single-ended or differential, and 4 internal channels (e.g., temperature sensor, VCC/2). Pin assignments are validated in Figures 7-2 and Table 7-1 of the SLAS874B datasheet.

What is the standby current consumption of the MSP430FG6426IPZR in LPM3 mode?

In LPM3 (standby mode), the MSP430FG6426IPZR consumes 3.2 µA at 2.2 V and 3.4 µA at 3.0 V (typical), with watchdog timer, crystal oscillator, and supply supervisor active while retaining full RAM content. This value is measured per Section 8.5 of the SLAS874B datasheet and confirmed for the PZ-package variant.

Can the MSP430FG6426IPZR drive a 160-segment LCD directly?

Yes, the MSP430FG6426IPZR integrates the LCD_B peripheral supporting up to 160 segments with programmable contrast control, charge pump, and bias generation. No external LCD controller or bias IC is required-pin assignments like COM0–COM3 and S0–S160 are defined in Figure 7-2 and Section 9.12 of the datasheet.