Texas Instruments MSP430F425AIPMR

Overview

MSP430F425AIPMR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring three independent 16-bit sigma-delta ADCs with differential PGA inputs, 16KB+256B flash/512B RAM, integrated 128-segment LCD driver, and UART/SPI serial interface - designed for high-precision portable metering applications including energy meters and handheld weigh scales.

For engineers reviewing the MSP430F425AIPMR datasheet, MSP430F425AIPMR pinout, MSP430F425AIPMR application, or MSP430F425AIPMR equivalent, key selection criteria include ultra-low active current (400 μA @ 1 MHz), sub-6 μs wake-up from standby, FLL+ clock stabilization, SD16 ADC resolution and gain programmability, and QFP-64 package compatibility with LCD segment drive requirements.

Technical Context

The MSP430F425AIPMR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its FLL+ module locks the DCO to multiples of a 32.768-kHz crystal, delivering stable MCLK, SMCLK, and ACLK with <6 μs wake-up from LPM4.

Three SD16 sigma-delta ADCs operate independently with fully differential inputs, programmable gain (1×–64×), internal reference, and integrated temperature sensor. The 16-bit Timer_A3 provides three capture/compare registers, while the LCD controller supports static/2–4 MUX configurations driving up to 128 segments using dedicated COM/S outputs.

Key Specifications

Pinout & Package

Package: 64-pin plastic quad flat pack (QFP), surface-mount, 10 mm × 10 mm body, 0.5 mm pitch - suitable for compact industrial and portable meter PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F425AIPMR, MSP430F427AIPMR offers scalable memory while maintaining identical analog/LCD capabilities and pin compatibility, whereas MSP430F2617TPMR trades integrated peripherals for greater general-purpose resources - making the former a seamless upgrade and the latter a platform shift requiring hardware changes.

Availability

MSP430F425AIPMR is available at Aetrix Electronics and suitable for energy metering, handheld instrumentation, portable analyzers, and submetering nodes requiring stable component supply across long product lifecycles.

Supply support for MSP430F425AIPMR 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 design.

The MSP430F425AIPMR belongs to the MSP430F42xA series - engineered specifically for high-precision, battery-operated measurement systems requiring integrated sigma-delta ADCs, LCD drivers, and minimal active/standby power consumption.

FAQ

What is the maximum operating frequency of the MSP430F425AIPMR CPU?

The MSP430F425AIPMR features a 16-bit RISC CPU with a 125-ns instruction cycle time, supporting up to 8 MHz MCLK operation via the FLL+ module. Its digitally controlled oscillator (DCO) is stabilized to multiples of the 32.768-kHz crystal, enabling reliable high-speed execution while maintaining ultra-low power - critical for real-time signal processing in metering applications.

Does the MSP430F425AIPMR support hardware UART communication?

Yes, the MSP430F425AIPMR includes one USART0 peripheral that supports asynchronous UART mode using pins P2.4 (UTXD0) and P2.5 (URXD0). It also supports synchronous SPI mode via P1.6/P1.7 and P2.2, with double-buffered transmit/receive channels - enabling robust serial communication for firmware updates or sensor data transmission in the MSP430F425AIPMR.

How many analog input channels does the MSP430F425AIPMR support for its sigma-delta ADCs?

The MSP430F425AIPMR integrates three independent 16-bit sigma-delta ADC modules (SD16), each with a fully differential analog input pair (e.g., A0.0+/A0.0−, A1.0+/A1.0−, A2.0+/A2.0−) and programmable gain amplifier. This provides six dedicated analog input terminals - enabling true simultaneous sampling of three differential sensor signals in the MSP430F425AIPMR.

Can the MSP430F425AIPMR drive a 4-MUX LCD display?

Yes, the MSP430F425AIPMR's integrated LCD controller supports static, 2-MUX, 3-MUX, and 4-MUX configurations using its 32 segment outputs (S0–S31) and four common outputs (COM0–COM3). This allows direct driving of up to 128 segments (32 × 4) - making it suitable for multi-digit energy meter displays without external LCD bias components in the MSP430F425AIPMR.

What is the wake-up time from lowest-power mode on the MSP430F425AIPMR?

The MSP430F425AIPMR wakes up from Low-Power Mode 4 (LPM4) - its deepest sleep state with 0.1 μA current draw and RAM retention - in less than 6 μs. This rapid wake-up is enabled by the FLL+ module's fast DCO stabilization and is essential for responsive event-driven operation in battery-powered metering devices using the MSP430F425AIPMR.