Texas Instruments MSP430FR5857IRHAT

Overview

MSP430FR5857IRHAT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 32KB nonvolatile memory, 1KB SRAM, and integrated 12-bit ADC (14 external + 2 internal channels), RTC, and dual eUSCI modules (UART/I²C/SPI). It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and metering systems requiring long-term data retention without flash wear.

For engineers reviewing the MSP430FR5857IRHAT datasheet, MSP430FR5857IRHAT pinout, MSP430FR5857IRHAT application, or MSP430FR5857IRHAT equivalent, key selection criteria include HFXT oscillator support (not LFXT), 40-pin VQFN package, 32KB FRAM endurance (10¹⁵ writes), LPM3.5 RTC current (0.25 µA), and UART/I²C bootloader capability.

Technical Context

The MSP430FR5857IRHAT implements the ULP CPUXV2 core with 16 registers and supports seven low-power modes, including LPM3.5 (RTC active) and LPM4.5 (shutdown at 0.02 µA). Its clock system includes factory-trimmed DCO, HFXT (high-frequency crystal), and VLO - but excludes LFXT and RTC_B functionality per device family documentation.

It integrates three Timer_A modules (3/3/2 capture/compare registers), one Timer_B (2/2 registers), 32-bit hardware multiplier, 3-channel DMA, and capacitive touch I/O on all pins. The ADC12_B module supports up to 14 external analog inputs with internal reference and sample-and-hold.

Key Specifications

Pinout & Package

The MSP430FR5857IRHAT is housed in a 40-pin VQFN (RHA) package measuring 6 mm × 6 mm with exposed thermal pad recommended to be connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR5858IRHAT, the MSP430FR5857IRHAT trades FRAM capacity for cost-sensitive deployments; versus MSP430FR5847IRHAT, it enables higher-precision timing-critical applications via HFXT support - making it optimal for metering and industrial sensing where both memory efficiency and MHz-grade clock stability are essential.

Availability

MSP430FR5857IRHAT is available at Aetrix Electronics and suitable for smart utility metering, energy-harvested sensor nodes, and industrial asset monitoring requiring stable component supply across multi-year production cycles.

Supply support for MSP430FR5857IRHAT 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 with emphasis on power efficiency, reliability, and system integration.

The MSP430FR58xx family delivers ultra-low-power mixed-signal microcontrollers built around FRAM technology, targeting battery-constrained applications such as metering, wearables, and industrial sensing where memory endurance and sub-µA sleep currents are critical.

FAQ

What is the maximum operating frequency of the MSP430FR5857IRHAT?

The MSP430FR5857IRHAT supports a maximum system clock frequency of 16 MHz using its factory-trimmed DCO or external HFXT oscillator. This allows deterministic real-time processing for time-critical tasks like metrology sampling or sensor fusion while maintaining ULP architecture compliance. The MSP430FR5857IRHAT achieves this performance with active-mode current of approximately 100 µA/MHz.

Does the MSP430FR5857IRHAT support low-frequency crystal (LFXT) operation?

No, the MSP430FR5857IRHAT does not support LFXT operation. As confirmed in the device comparison table and functional block diagram notes, it belongs to the MSP430FR585x series with HFXT-only oscillator support - meaning it requires an external high-frequency crystal (1–8 MHz) on PJ.6/HFXIN and PJ.7/HFXOUT. LFXT and RTC_B are excluded per family specification.

How many ADC input channels does the MSP430FR5857IRHAT provide?

The MSP430FR5857IRHAT integrates the ADC12_B module with support for 14 external analog input channels (A0–A15, excluding A6 and A7 which are multiplexed with eUSCI_A1 functions) plus 2 internal channels (temperature sensor and VREF). This configuration is explicitly listed in Table 3-1 under "ADC12_B" for the MSP430FR5857 row.

What bootloader interfaces are supported by the MSP430FR5857IRHAT?

The MSP430FR5857IRHAT supports both hardware UART and I²C bootloaders (BSL), accessible via dedicated pins: UART BSL uses P2.0 (BSLTX) and P2.1 (BSLRX); I²C BSL uses P1.6 (BSLSDA) and P1.7 (BSLSCL). These interfaces allow in-system firmware updates without JTAG, simplifying field maintenance and reducing test infrastructure costs for the MSP430FR5857IRHAT.

Is the MSP430FR5857IRHAT pin-compatible with other devices in the MSP430FR58xx family?

Yes, the MSP430FR5857IRHAT in the 40-pin RHA package shares identical pinout with MSP430FR5858IRHAT and MSP430FR5859IRHAT. All three devices use the same VQFN-40 footprint, HFXT oscillator pins (PJ.6/PJ.7), and peripheral mapping - enabling direct substitution in designs where memory size differences (32KB/48KB/64KB FRAM) do not impact layout or firmware constraints.