Texas Instruments MSP430F427IPM

Overview

MSP430F427IPM from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 32 KB Flash, 1 KB RAM, three independent 16-bit sigma-delta ADCs (each with differential PGA inputs), 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 MSP430F427IPM datasheet, MSP430F427IPM pinout, MSP430F427IPM application, or MSP430F427IPM equivalent, key selection criteria include its 1.8–3.6 V supply range, sub-µA LPM4 current (0.1 µA at 25°C), <6 µs wake-up from standby, FLL+ clock system, and 64-pin LQFP package with dedicated analog input pins for SD16 channels A0.0± through A2.0±.

Technical Context

The MSP430F427IPM implements a 16-bit CPU with constant generators and a digitally controlled oscillator (DCO) enabling sub-6 µs wake-up from LPM3/LPM4. Its FLL+ module locks to LFXT1 (32.768 kHz watch crystal) or HFXT1 (1–8 MHz crystal/resonator) to generate stable MCLK up to 8 MHz.

Three independent SD16 modules support simultaneous 16-bit sigma-delta conversion with programmable gain amplifiers on differential inputs (A0.0±, A1.0±, A2.0±), internal temperature sensor, and selectable internal/external reference - all operating from AVCC/AVSS with dedicated analog power domains.

Key Specifications

Pinout & Package

64-pin LQFP (PM package), 10 mm × 10 mm body, 0.5 mm pitch. Exposed pad not present. RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F425IPM and MSP430F423IPM, the MSP430F427IPM provides double and quadruple Flash/RAM respectively - enabling implementation of DLMS/COSEM protocol stacks, secure boot, and multi-point sensor compensation without external memory.

Availability

MSP430F427IPM is available at Aetrix Electronics and suitable for energy metering, weigh scale instrumentation, and handheld test equipment requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for MSP430F427IPM 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 with emphasis on low-power innovation and industrial reliability.

The MSP430F427IPM belongs to the MSP430F42x ultra-low-power mixed-signal MCU family, engineered specifically for precision measurement applications demanding high-resolution ADCs, integrated LCD drivers, and multi-year battery operation.

FAQ

What is the maximum system clock frequency supported by the MSP430F427IPM?

The MSP430F427IPM supports a maximum processor frequency (MCLK) of 8 MHz at VCC = 3.6 V, achieved via the FLL+ module locking to an external 1–8 MHz crystal or ceramic resonator. At lower supply voltages (e.g., 1.8 V), the maximum guaranteed frequency drops to 4.15 MHz per the voltage-vs-frequency curve in the datasheet. This ensures deterministic timing for metrology algorithms and LCD refresh cycles.

Does the MSP430F427IPM include hardware for sigma-delta ADC conversion?

Yes, the MSP430F427IPM integrates three independent SD16 modules - each a complete 16-bit sigma-delta ADC with differential programmable-gain amplifier inputs (A0.0±, A1.0±, A2.0±), internal temperature sensor, selectable internal/external reference, and built-in voltage reference buffer. No external modulator or digital filter is required for basic operation.

Can the MSP430F427IPM drive a 128-segment LCD without external components?

Yes, the MSP430F427IPM features a fully integrated LCD controller supporting up to 128 segments using four commons (COM0–COM3) and 32 segments (S0–S31 plus S24–S28). It provides programmable bias, duty, charge pump, and contrast control - eliminating the need for external LCD driver ICs or discrete bias networks in compliant display designs.

What power-saving modes are available on the MSP430F427IPM?

The MSP430F427IPM offers five low-power modes (LPM0–LPM4). LPM4 disables all clocks and retains only RAM, drawing just 0.1 µA at 25°C. LPM3 stops MCLK/SMCLK but keeps ACLK running for RTC or LCD, consuming 1.6 µA. Wake-up from LPM3 occurs in under 6 µs, enabling responsive event-driven operation in battery-powered instruments.

Is the MSP430F427IPM pin-compatible with other devices in the MSP430F42x family?

Yes, the MSP430F427IPM shares identical 64-pin LQFP (PM) packaging, pinout, and peripheral mapping with MSP430F425IPM and MSP430F423IPM. All three devices use the same footprint, signal assignments, and electrical characteristics - allowing hardware design reuse across product tiers by selecting flash/RAM variants during firmware development.