Texas Instruments MSP430FR5858IRHAT

Overview

MSP430FR5858IRHAT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 48KB nonvolatile memory, 2KB RAM, and integrated 12-bit ADC (14 external channels), RTC, 32-bit hardware multiplier, and dual eUSCI modules supporting UART, SPI, and I²C. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and metering systems.

For engineers reviewing the MSP430FR5858IRHAT datasheet, MSP430FR5858IRHAT pinout, MSP430FR5858IRHAT application, or MSP430FR5858IRHAT equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 current (0.25 µA), HFXT oscillator support, 40-pin VQFN package, and UART/I²C bootloader capability.

Technical Context

The MSP430FR5858IRHAT implements the CPUXV2 core with 16 registers and executes instructions at up to 16 MHz using a factory-trimmed DCO or external HFXT (4–24 MHz). Its memory subsystem integrates 48KB FRAM with unified program/data/storage space and hardware CRC-16 for integrity verification.

Analog subsystem includes a 12-bit SAR ADC with internal reference, sample-and-hold, and 14 external analog inputs; a 16-channel comparator; and RTC_B with calendar/alarm functions clocked by LFXT. Digital peripherals comprise five 16-bit timers (TA0–TA3, TB0), three-channel DMA, and eUSCI_A0/A1 (UART/SPI) + eUSCI_B0 (I²C/SPI).

Key Specifications

Pinout & Package

The MSP430FR5858IRHAT is housed in a 40-pin VQFN (RHA) package with 0.5-mm pitch and an exposed thermal pad recommended to be connected to DVSS. Pin functions are multiplexed across digital I/O, analog inputs, timer capture/compare, eUSCI interfaces, and debug signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR5859IRHAT, the MSP430FR5858IRHAT trades 16KB FRAM for identical power/performance in HFXT-based designs; versus MSP430FR5848IRHAT, it adds HFXT capability enabling higher clock stability and faster serial communication-critical for time-sensitive industrial protocols.

Availability

MSP430FR5858IRHAT is available at Aetrix Electronics and suitable for smart metering, energy-harvesting sensor nodes, wearable electronics, industrial data loggers, and portable medical devices requiring stable component supply and long-term lifecycle support.

Supply support for MSP430FR5858IRHAT 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 MSP430FR58xx family is designed for ultra-low-power sensing and measurement applications where FRAM endurance, sub-µA sleep modes, and integrated analog peripherals reduce system complexity and extend battery life.

FAQ

What is the maximum operating frequency of the MSP430FR5858IRHAT?

The MSP430FR5858IRHAT supports up to 16 MHz operation using either its factory-trimmed DCO or an external HFXT oscillator (4–24 MHz). The device's timing specifications-including ADC conversion time, UART baud rates, and timer resolution-are validated at this maximum frequency, making it suitable for real-time control and high-speed data acquisition tasks where deterministic timing is essential.

Does the MSP430FR5858IRHAT include a real-time clock (RTC) module?

Yes, the MSP430FR5858IRHAT includes the RTC_B module, which provides calendar, alarm, and periodic interrupt functions. However, RTC_B requires connection to an external 32-kHz crystal via LFXIN/LFXOUT pins-but those pins are not present on the MSP430FR5858IRHAT, as confirmed by its HFXT-only configuration in Table 3-1 and Figure 4-4. Therefore, RTC_B is not functional on this specific variant.

How many analog input channels does the MSP430FR5858IRHAT support on its 12-bit ADC?

The MSP430FR5858IRHAT supports 14 external analog input channels (A0–A13) on its 12-bit ADC12_B module, as specified in Table 3-1 and confirmed in Section 4.2 signal descriptions. Two additional internal channels (temperature sensor and VREF) are also available, but only the 14 external channels are routed to physical pins in the 40-pin RHA package.

What debug interface does the MSP430FR5858IRHAT use, and what pins are required?

The MSP430FR5858IRHAT uses the two-wire Spy-Bi-Wire (SBW) interface for debugging and programming. It requires only two pins: TEST/SBWTCK (pin 19) and RST/NMI/SBWTDIO (pin 20). This minimal pin count simplifies board layout and reduces debug connector footprint compared to full JTAG, while maintaining full flash programming, breakpoint, and register visibility capabilities.

Is the MSP430FR5858IRHAT pin-compatible with other devices in the MSP430FR58xx family?

The MSP430FR5858IRHAT shares the same 40-pin VQFN (RHA) package and pinout with MSP430FR5859IRHAT and MSP430FR5857IRHAT, as shown in Figure 4-4. However, it is not pin-compatible with LFXT variants like MSP430FR5848IRHAT (same package but different pin functions for PJ.4/PJ.5), nor with 48-pin RGZ devices. Always verify signal mapping in Table 4-1 before substituting.