Texas Instruments MSP430A082IPNR

Overview

MSP430A082IPNR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 128 KB Flash, 16 KB RAM, a 12-bit ADC with 14 external + 2 internal channels, three 16-bit timers (Timer_A with five and three capture/compare registers, Timer_B with seven), four USCI modules (two UART/IrDA/SPI and two I²C/SPI), and real-time clock capability. It operates from 2.2 V to 3.6 V and targets battery-powered sensor systems and digital timers.

For engineers reviewing the MSP430A082IPNR datasheet, MSP430A082IPNR pinout, MSP430A082IPNR application, or MSP430A082IPNR equivalent, key selection criteria include its 80-pin LQFP package, 16-MHz max system clock, 1.69 µA LPM4 current, RTC integration, and dual USCI_A/USCI_B interface support for mixed-protocol communication in space-constrained embedded designs.

Technical Context

The MSP430A082IPNR implements the MSP430F541x family architecture with CPUXV2 core, unified clock system (FLL, VLO, REFO, XT1/XT2 support), and flexible power management including programmable LDO and supply supervision. Its memory-mapped peripherals are accessed via 16-bit address/data bus with DMA support for efficient data movement.

It integrates a hardware multiplier for 32-bit arithmetic, CRC16 module, and enhanced interrupt vectoring with priority handling across 87 I/O pins. The device supports serial onboard programming without external voltage and includes BSL for field firmware updates.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (PN), 12 mm × 12 mm body size, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430A082IPNR, MSP430F5418IPN offers identical functionality and drop-in compatibility, while MSP430F5435IPN adds 64 KB Flash for scalable firmware-both retain the same ultra-low-power profile and 80-pin LQFP footprint critical for legacy PCB reuse.

Availability

MSP430A082IPNR is available at Aetrix Electronics and suitable for remote sensor nodes, digital thermostats, and hand-held meters requiring stable component supply and long-term industrial availability.

Supply support for MSP430A082IPNR 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 and embedded processing solutions for industrial, automotive, and personal electronics markets.

The MSP430F541x product line was designed for ultra-low-power, battery-operated measurement and control applications demanding precision analog integration, robust timing, and extended operational lifetime.

FAQ

What is the maximum operating frequency of the MSP430A082IPNR?

The MSP430A082IPNR supports a maximum system clock frequency of 18 MHz, achieved via its digitally controlled oscillator (DCO) stabilized by the FLL loop. This frequency is confirmed in the device's electrical specifications and enables high-speed ADC sampling (up to 200 ksps), real-time control execution, and responsive serial communication-all while maintaining ultra-low active-mode current of 312 µA/MHz at 8 MHz and 3.0 V.

Does the MSP430A082IPNR include a real-time clock (RTC) module?

Yes, the MSP430A082IPNR integrates the RTC_A module with calendar mode, alarm capability, and battery-backup support. It operates from the 32-kHz XT1 crystal (P7.0/P7.1) or internal VLO, enabling accurate timekeeping during LPM3 standby mode at just 2.6 µA. The RTC_A module is fully memory-mapped and supports time-stamped data logging, scheduled wake-ups, and periodic interrupts without CPU involvement.

How many universal serial communication interfaces (USCI) does the MSP430A082IPNR have?

The MSP430A082IPNR includes four USCI modules: two USCI_A (UCA0, UCA1) supporting UART, IrDA, and SPI; and two USCI_B (UCB0, UCB1) supporting I²C and SPI. Each USCI operates independently, allowing concurrent protocols-for example, UART debug on UCA0 while I²C sensor reads occur on UCB0-without resource contention or software arbitration overhead.

What is the ADC resolution and channel count on the MSP430A082IPNR?

The MSP430A082IPNR features a 12-bit successive-approximation ADC (ADC12_A) with 14 external analog input channels and 2 internal channels (temperature sensor and VREF). It supports sample-and-hold, autoscan mode for unattended multi-channel acquisition, and internal reference options (1.5 V or 2.5 V), delivering 1 LSB INL/DNL performance and 200 ksps throughput-sufficient for precision sensor interfacing in portable instrumentation.

Is the MSP430A082IPNR pin-compatible with other MSP430F54xx devices in the 80-pin LQFP package?

Yes, the MSP430A082IPNR shares identical pinout, electrical characteristics, and peripheral mapping with the MSP430F5418IPN and MSP430F5435IPN in the 80-pin LQFP (PN) package. All three devices use the same signal naming, I/O configuration, and power/ground pin locations per Table 4-1 of SLAS612F, enabling direct PCB-level substitution without layout changes or firmware modification.