Texas Instruments MSP430I2041TRHBR

Overview

MSP430I2041TRHBR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller optimized for precision energy metering and battery-powered sensor systems. It integrates four 24-bit sigma-delta ADCs with differential PGA inputs, a 16.384-MHz DCO clock system, two eUSCI modules (UART/IrDA/SPI/I²C), and operates across 2.2–3.6 V supply range. Its 32-pin VQFN package supports high-density metering PCB layouts.

For engineers reviewing the MSP430I2041TRHBR datasheet, MSP430I2041TRHBR pinout, MSP430I2041TRHBR application, or MSP430I2041TRHBR equivalent, key selection criteria include 24-bit ADC channel count, LPM4.5 shutdown current (75 nA), RHB package thermal pad connection to DVSS, and SD24 input pin termination requirements per TI SLAS887C.

Technical Context

The MSP430I2041TRHBR implements a 16-bit RISC CPU with constant generators and integrated LDO delivering 1.8-V core voltage. Its analog subsystem centers on four independent SD24 modules-each supporting programmable gain (1×/2×/4×/8×/16×/32×/64×), 256× oversampling, and internal/external reference selection-enabling simultaneous high-resolution measurement of voltage, current, and auxiliary parameters in single-phase meters.

Digital peripherals include two 16-bit Timer_A modules (3 capture/compare registers each), hardware multiplier (16×16), and dual eUSCI interfaces: eUSCI_A0 supports UART with auto-baud detection and IrDA encoding/decoding, while eUSCI_B0 supports I²C master/slave and synchronous SPI. Wake-up from LPM3 occurs in ≤1 µs, critical for event-triggered sampling in power monitoring.

Key Specifications

Pinout & Package

Package: 32-pin VQFN (RHB), 5 mm × 5 mm, with exposed thermal pad recommended to be connected to DVSS for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar metrology microcontroller applications.

Compared with MSP430I2041TRHBR, MSP430I2040TRHBR offers identical metrology capability at lower memory cost, while MSP430I2031TRHBR trades one SD24 channel for simplified analog design-both retain full pin compatibility and firmware portability within the i20xx family.

Availability

MSP430I2041TRHBR is available at Aetrix Electronics and suitable for single-phase energy metering, industrial power monitoring, and portable medical parameter logging requiring stable component supply and long-term lifecycle support.

Supply support for MSP430I2041TRHBR 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 over 50 years of innovation in precision analog and low-power design.

The MSP430™ Metrology and Monitoring portfolio delivers ultra-low-power MCUs with integrated high-resolution ADCs and metrology-optimized peripherals-designed specifically for energy measurement, power quality analysis, and battery-operated sensor systems.

FAQ

What is the maximum system clock frequency supported by the MSP430I2041TRHBR?

The MSP430I2041TRHBR supports a maximum system clock frequency of 16.384 MHz via its internal digitally controlled oscillator (DCO). This frequency is factory-trimmed and stable across voltage and temperature ranges, enabling precise timing for sigma-delta ADC sampling and real-time metering calculations without external crystal dependency.

How many analog input channels does the MSP430I2041TRHBR support, and what is their resolution?

The MSP430I2041TRHBR supports four independent 24-bit sigma-delta analog-to-digital converters (SD24), each with differential PGA inputs. Each channel achieves true 24-bit resolution with up to 256× oversampling and programmable gain (1× to 64×), enabling high-accuracy acquisition of voltage, current, temperature, and auxiliary signals simultaneously.

Does the MSP430I2041TRHBR include hardware for IrDA communication?

Yes, the MSP430I2041TRHBR includes dedicated IrDA encoder and decoder logic within its eUSCI_A0 module. This allows direct implementation of infrared physical layer communication-such as for optical meter reading-without external transceivers, reducing bill-of-materials and board space in smart utility devices.

What is the recommended thermal pad connection for the MSP430I2041TRHBR's RHB package?

Texas Instruments recommends connecting the exposed thermal pad of the MSP430I2041TRHBR's 32-pin VQFN (RHB) package directly to the DVSS plane. This connection ensures optimal thermal dissipation during sustained ADC conversion cycles and maintains junction temperature within safe limits under continuous metrology operation.

Can the MSP430I2041TRHBR operate from a single 3.3-V supply, and what internal regulation is provided?

Yes, the MSP430I2041TRHBR operates from a single 2.2–3.6-V supply (VCC). It integrates an internal LDO that generates a regulated 1.8-V core voltage (VCORE) for the CPU and digital logic-improving noise immunity for the analog subsystem and eliminating the need for an external core regulator in space-constrained designs.