Texas Instruments MSP430FR2033IPM

Overview

MSP430FR2033IPM from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 15.5 KB FRAM (15 KB program + 512 B info), 2 KB RAM, 10-bit 10-channel ADC with 200 ksps sampling, and dual eUSCI modules (UART/I²C/SPI). It operates from 1.8 V to 3.6 V and delivers 126 µA/MHz active current at 3 V, targeting battery-powered sensor nodes and industrial supervisors.

For engineers reviewing the MSP430FR2033IPM datasheet, MSP430FR2033IPM pinout, MSP430FR2033IPM application, or MSP430FR2033IPM equivalent, key selection criteria include LQFP-64 package compatibility, 60 GPIO count with capacitive touch support, RTC-enabled LPM3.5 (0.77 µA), and FRAM endurance (10¹⁵ write cycles) for frequent data logging in safety-critical edge devices.

Technical Context

The MSP430FR2033IPM integrates a 16-MHz DCO with FLL-based frequency locking (±1% accuracy at room temperature), dual Timer_A3 peripherals each with three capture/compare registers, and a dedicated RTC counter usable in LPM3.5 mode while main system remains powered down. Its clock system supports multiple sources: internal REFO (32 kHz), VLO (10 kHz), MODCLK, and external XT1 crystal (32.768 kHz).

Analog subsystem includes a 10-bit SAR ADC with internal 1.5-V reference, sample-and-hold, and configurable input channels mapped across P1–P8 ports. All I/Os support capacitive touch sensing, and interrupt-capable P1/P2 pins enable wake-up from deep sleep modes including LPM4.5 (15 nA shutdown current).

Key Specifications

Pinout & Package

LQFP-64 (PM) package, 10 mm × 10 mm body size, 0.5 mm pitch, thermally enhanced with exposed pad (not electrically connected per datasheet).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR2033IPM, MSP430FR2032IPM offers cost-optimized memory for basic sensing, while MSP430FR2355IPM adds precision analog blocks and headroom for future firmware expansion - both retain pin-compatible LQFP-64 packaging and identical low-power architecture.

Availability

MSP430FR2033IPM is available at Aetrix Electronics and suitable for smoke/fire detection systems, industrial sensor management, and HMI controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for safety-certified designs.

Supply support for MSP430FR2033IPM 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 low-power design.

The MSP430FR2033IPM belongs to TI's MSP430FR2xx ultra-low-power FRAM microcontroller family, engineered for energy-constrained sensing, measurement, and control applications where battery life, data reliability, and rapid development are critical.

FAQ

What is the maximum operating frequency of the MSP430FR2033IPM?

The MSP430FR2033IPM features a digitally controlled oscillator (DCO) with frequency-locked loop (FLL) that supports up to 16 MHz operation. This maximum frequency is achievable across the full 1.8 V to 3.6 V supply range and is specified with ±1% accuracy at room temperature using the on-chip reference. The MSP430FR2033IPM maintains this performance while delivering 126 µA/MHz active current at 3 V.

Does the MSP430FR2033IPM support hardware real-time clock functionality?

Yes, the MSP430FR2033IPM includes a dedicated 16-bit RTC counter that operates independently in LPM3.5 mode with a 32.768-kHz crystal, consuming only 0.77 µA at 3 V. This RTC runs without CPU intervention and supports calendar mode, alarm interrupts, and automatic timekeeping - making it ideal for time-stamped logging in the MSP430FR2033IPM-based systems.

How many GPIO pins does the MSP430FR2033IPM provide in its LQFP-64 package?

The MSP430FR2033IPM in the LQFP-64 (PM) package provides 60 general-purpose I/O pins. All 60 GPIOs support capacitive touch sensing, and 16 of them (P1.0–P1.7 and P2.0–P2.7) are interrupt-capable to wake the device from low-power modes. Pin multiplexing allows assignment of UART, SPI, I²C, timer, and ADC functions to specific pins as needed in the MSP430FR2033IPM design.

What type of nonvolatile memory does the MSP430FR2033IPM use, and what are its key advantages?

The MSP430FR2033IPM uses ferroelectric RAM (FRAM) - 15 KB for program code and 512 B for information storage. FRAM offers 10¹⁵ write cycles, instant writes (no erase required), inherent radiation tolerance, and single-cycle write capability. Unlike flash, FRAM in the MSP430FR2033IPM eliminates wear leveling overhead and enables reliable, high-frequency data logging in safety-critical applications.

Which communication interfaces are integrated into the MSP430FR2033IPM?

The MSP430FR2033IPM integrates two enhanced universal serial communication interfaces: eUSCI_A0 supporting UART, IrDA, and SPI; and eUSCI_B0 supporting SPI and I²C. These are independent peripherals with separate clock domains and buffers, enabling concurrent communication - for example, UART telemetry to a host while I²C reads local sensors - without resource contention in the MSP430FR2033IPM system.