Texas Instruments MSP430FE4272IPMR

Overview

MSP430FE4272IPMR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller optimized for single-phase energy metering, featuring 32KB Flash + 256B information memory, 1KB RAM, dual 16-bit sigma-delta ADCs (SD16), and integrated ESP430CE1B signal processor core for automatic energy calculation in 2-wire/3-wire configurations.

For engineers reviewing the MSP430FE4272IPMR datasheet, MSP430FE4272IPMR pinout, MSP430FE4272IPMR application, or MSP430FE4272IPMR equivalent, key selection criteria include its embedded metering accelerator, 128-segment LCD driver, FLL+-stabilized 8-MHz MCLK, 64-pin QFP package with dedicated analog front-end pins (I1+/I1−, V1+/V1−), and support for UART/SPI via USART0.

Technical Context

The MSP430FE4272IPMR 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 DCO frequency to multiples of a 32.768-kHz crystal, achieving sub-6-µs wake-up from LPM4.

It integrates two independent SD16 converters with programmable gain and offset calibration, coupled with the ESP430CE1B hardware engine that performs real-time active/reactive energy computation, power factor, and RMS voltage/current-without CPU intervention-using mailbox-based communication between ESP and CPU.

Key Specifications

Pinout & Package

Package: 64-pin Plastic Quad Flat Pack (QFP), PM suffix, −40°C to +85°C operating range.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-phase metering microcontroller applications.

Compared with MSP430FE4252IPMR and MSP430FE427IPM, the MSP430FE4272IPMR offers maximum Flash headroom for complex metering stacks and guaranteed RoHS-compliant packaging, while maintaining identical metrology performance and pin compatibility across the FE42x2 family.

Availability

MSP430FE4272IPMR is available at Aetrix Electronics and suitable for smart electricity metering, prepayment energy metering, and industrial sub-metering applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MSP430FE4272IPMR 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 low-power analog and embedded processing solutions, with decades of expertise in precision metrology and energy infrastructure ICs.

The MSP430FE42x2 product line was designed specifically for cost-sensitive, battery-backed single-phase electricity meters-integrating metrology-grade ADCs, signal processing acceleration, and display drivers into one ultra-low-power SoC.

FAQ

What is the primary function of the ESP430CE1B module in the MSP430FE4272IPMR?

The ESP430CE1B module in the MSP430FE4272IPMR is a dedicated hardware signal processor that performs real-time single-phase energy calculations-including active/reactive energy (Wh/VARh), power factor, and RMS voltage/current-using inputs from the dual SD16 ADCs. It operates autonomously, freeing the CPU for communication, display, and security tasks. This capability is intrinsic to the MSP430FE4272IPMR architecture and requires no external co-processor.

Does the MSP430FE4272IPMR support UART communication, and which pins are used?

Yes, the MSP430FE4272IPMR supports UART communication via its USART0 peripheral. Pins P2.4/UTXD0 and P2.5/URXD0 are dedicated to transmit and receive functions respectively, enabling full-duplex asynchronous serial communication compliant with standards like IEC 62056-21. These pins are electrically compatible with 3.3-V logic levels and support baud rates up to 115.2 kbps with programmable modulation control.

What LCD configuration does the MSP430FE4272IPMR support, and how many segments can it drive?

The MSP430FE4272IPMR integrates a fully autonomous LCD controller supporting static, 2-MUX, 3-MUX, and 4-MUX configurations with up to 128 segments. It uses dedicated pins S0–S31 and COM0–COM3 to drive multiplexed displays directly-no external bias generator or controller required. The LCD memory map includes 32 bytes of dedicated segment RAM, and contrast is adjustable via internal resistor ladder controlled by R03/R13/R23/R33 pins.

How does the MSP430FE4272IPMR achieve ultra-low-power operation in metering applications?

The MSP430FE4272IPMR achieves ultra-low-power operation through five software-selectable low-power modes, including LPM4 (0.1 µA RAM retention), sub-6-µs wake-up from standby, and intelligent peripheral gating. Its FLL+ dynamically scales MCLK based on workload, and the ESP430CE1B handles metrology continuously in LPM3-allowing the CPU to remain asleep. At 3.0 V, active mode consumes only 400 µA at 1 MHz, enabling >10-year battery life in tamper-proof meters.

Is the MSP430FE4272IPMR pin-compatible with other devices in the MSP430FE42x2 family?

Yes, the MSP430FE4272IPMR is fully pin-compatible with all members of the MSP430FE42x2 family-including MSP430FE4232IPMR, MSP430FE4242IPMR, and MSP430FE4252IPMR-in the 64-pin QFP (PM) package. All share identical pin functions, electrical characteristics, and peripheral mappings. Firmware developed for one variant can be reused across the family with only Flash/RAM size adjustments required for feature scaling.