Texas Instruments MSP430FR58721IPMR

Overview

MSP430FR58721IPMR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller featuring 64KB nonvolatile FRAM, 2KB RAM, 16-MHz CPU, integrated 12-bit ADC with 8 external channels, RTC with calendar/alarm, and dual eUSCI modules supporting UART/IrDA/SPI (eUSCI_A) and I²C/SPI (eUSCI_B). It targets energy-harvested sensor nodes and wearable electronics requiring long battery life and reliable data logging.

For engineers reviewing the MSP430FR58721IPMR datasheet, MSP430FR58721IPMR pinout, MSP430FR58721IPMR application, or MSP430FR58721IPMR equivalent, key selection criteria include LPM3.5 current (0.35 µA), FRAM endurance (10¹⁵ write cycles), 51 GPIOs with capacitive touch capability, absence of AES256 encryption, and LQFP-64 package compatibility with existing MSP430FR58xx layouts.

Technical Context

The MSP430FR58721IPMR implements a 16-bit CPUXV2 core with seven low-power modes, including LPM3.5 (RTC active, 0.35 µA typical) and LPM4.5 (shutdown, 0.04 µA typical). Its clock system integrates DCO (10 factory-trimmed frequencies), LFXT (32-kHz crystal), and HFXT (high-frequency crystal) sources, with dedicated RTCCLK routing on P2.2 and P1.0.

Peripherals include three 16-bit Timer_A modules (TA0–TA2), one 16-bit Timer_B (TB0) with six capture/compare registers, 32-bit hardware multiplier, three-channel DMA, CRC16/CRC32 engines, and analog comparator with up to 16 inputs - all operating within the 1.8–3.6-V supply range and optimized for sub-µA standby operation.

Key Specifications

Pinout & Package

LQFP-64 package with 10 mm × 10 mm body size and 0.5-mm pitch; includes three DVSS/DVCC pairs and separate AVSS/AVCC rails for analog noise isolation; thermal pad recommended for RGC variant (not applicable to PM).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR59721IPMR, the MSP430FR58721IPMR omits AES256 but retains full FRAM, RTC, and peripheral functionality - making it optimal for cost-sensitive, non-secure sensing. Versus MSP430FR5872IPMR, the '1' suffix indicates updated wafer lot and minor process enhancements without functional change.

Availability

MSP430FR58721IPMR is available at Aetrix Electronics and suitable for smart utility metering, energy-harvested sensor nodes, and wearable health monitors requiring stable component supply across multi-year production cycles.

Supply support for MSP430FR58721IPMR 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 for industrial, automotive, and consumer markets.

The MSP430FR58xx family is engineered for ultra-low-power sensing and measurement applications, emphasizing FRAM-based data integrity, sub-µA sleep modes, and integrated analog peripherals for battery-constrained edge devices.

FAQ

Does MSP430FR58721IPMR include hardware AES encryption?

No, MSP430FR58721IPMR does not implement the AES256 security coprocessor. This feature is present only in MSP430FR59xx and MSP430FR592xx variants. The MSP430FR58721IPMR retains all other peripherals - including 64KB FRAM, 12-bit ADC, RTC, and dual eUSCI modules - making it ideal for non-secure, high-reliability sensing applications where cryptographic acceleration is unnecessary.

What is the maximum operating frequency of MSP430FR58721IPMR?

The MSP430FR58721IPMR supports a maximum CPU clock frequency of 16 MHz, achieved via its factory-trimmed DCO or external HFXT crystal. This frequency is fully supported across the entire 1.8–3.6-V supply range and enables real-time processing of sensor data, communication stack execution, and timer-based control loops without performance throttling.

How many I/O pins does MSP430FR58721IPMR provide, and do they support capacitive touch?

MSP430FR58721IPMR provides 51 general-purpose I/O pins, all of which support capacitive touch sensing via the integrated CapTIvate™-compatible CSD module. No external components are required - each pin can serve as electrode, shield, or reference, enabling intuitive user interfaces in space-constrained wearables and handheld devices.

What package type and dimensions does MSP430FR58721IPMR use?

MSP430FR58721IPMR is offered in LQFP-64 (PM) package with 10 mm × 10 mm body size and 0.5-mm lead pitch. Pin 1 is marked by a dot; the package includes three DVSS/DVCC power pairs and dedicated AVSS/AVCC rails for analog subsystem isolation. Thermal pad connection is not required for PM variant but is recommended for RGC variant.

Is MSP430FR58721IPMR pin-compatible with other MSP430FR58xx devices?

Yes, MSP430FR58721IPMR shares identical pinout and electrical characteristics with MSP430FR5872IPMR and MSP430FR5870IPMR in the LQFP-64 package. All MSP430FR58xx devices use the same 64-pin mapping, register-level peripheral configuration, and power domain structure - enabling drop-in replacement and simplified migration across memory and feature variants.