Texas Instruments MSP430F425IPMR

Overview

MSP430F425IPMR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with three independent 16-bit sigma-delta ADCs, 16 KB + 256 B flash, 512 B RAM, integrated 128-segment LCD driver, and UART/SPI serial interface-designed for high-precision portable metering applications including energy meters and handheld weighing scales.

For engineers reviewing the MSP430F425IPMR datasheet, MSP430F425IPMR pinout, MSP430F425IPMR application, or MSP430F425IPMR equivalent, key selection criteria include ultra-low active/standby current (400 µA @ 1 MHz / 1.6 µA), sigma-delta ADC resolution and PGA support, LCD segment count, flash/RAM capacity, and LQFP-64 package compatibility with TI's MSP430x4xx family toolchain and bootloader.

Technical Context

The MSP430F425IPMR implements a 16-bit CPU with constant generators and a digitally controlled oscillator (DCO), enabling wake-up from LPM3 in under 6 µs. Its FLL+ frequency-locked loop supports stable MCLK generation up to 8 MHz across 1.8–3.6 V operation.

Three independent SD16 sigma-delta ADC modules each feature differential inputs with programmable gain amplifiers, internal reference, temperature sensor, and external reference input-configured for simultaneous high-resolution analog measurement without external signal conditioning.

Key Specifications

Pinout & Package

LQFP-64 (10 mm × 10 mm) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–40°C to 85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F427IPMR and MSP430F423IPMR, the MSP430F425IPMR provides optimal balance of memory resources (16 KB flash/512 B RAM), ADC channel count, and LCD drive capability for mid-tier portable metering - avoiding overdesign while ensuring headroom for calibration data, communication buffers, and firmware updates.

Availability

MSP430F425IPMR is available at Aetrix Electronics and suitable for energy metering, handheld weigh scales, and portable gas analyzers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430F425IPMR 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 leadership in ultra-low-power microcontrollers.

The MSP430F425IPMR belongs to the MSP430x4xx family-designed specifically for high-precision, battery-operated measurement systems requiring integrated analog peripherals, LCD support, and sub-µA standby operation.

FAQ

What is the maximum system clock frequency supported by the MSP430F425IPMR?

The MSP430F425IPMR supports a maximum processor frequency (MCLK) of 8 MHz, achievable across the full 1.8–3.6 V supply range. This is generated by the FLL+ module locked to either an external crystal (up to 8 MHz) or the internal DCO, with stability maintained via automatic frequency calibration against the 32.768-kHz LFXT1 reference. The MSP430F425IPMR maintains timing accuracy and ADC performance at this rate.

Does the MSP430F425IPMR include a hardware bootloader (BSL)?

Yes, the MSP430F425IPMR integrates a factory-programmed UART-based bootloader (BSL) that enables in-system programming without external hardware programmers. It resides in ROM, requires no external voltage, and supports firmware updates via standard serial interface using TI's BSL Host Software. The MSP430F425IPMR BSL is accessible through P2.4 (UTXD0) and P2.5 (URXD0) pins with RST/NMI entry sequence.

How many independent analog-to-digital converters does the MSP430F425IPMR have, and what is their resolution?

The MSP430F425IPMR features three independent 16-bit sigma-delta analog-to-digital converters (SD16 modules), each with differential programmable-gain amplifier inputs. Each SD16 channel supports up to 16-bit effective resolution with built-in temperature sensor, internal voltage reference, and external reference input capability. All three ADCs operate concurrently without resource contention, making the MSP430F425IPMR ideal for multi-sensor metrology.

What LCD configuration does the MSP430F425IPMR support?

The MSP430F425IPMR integrates a programmable LCD controller supporting up to 128 segments using 4 backplane outputs (COM0–COM3) and 32 segment outputs (S0–S31). It supports static, 2-, 3-, or 4-mux configurations with adjustable bias, frame frequency, and charge pump control. No external LCD driver IC is needed - the MSP430F425IPMR directly drives common segment-based displays used in utility meters and portable instruments.

Is the MSP430F425IPMR pin-compatible with other devices in the MSP430F42x family?

Yes, the MSP430F425IPMR is fully pin-compatible with the MSP430F427IPMR and MSP430F423IPMR in the LQFP-64 (PM) package. All share identical pin functions, electrical characteristics, and mechanical footprint. Firmware and hardware designs targeting one device can be reused across the family with only flash/RAM size and peripheral enablement differences requiring software adjustment - simplifying platform development for the MSP430F425IPMR.