Texas Instruments MSP430F5172IRSBR

Overview

MSP430F5172IRSBR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 32 KB Flash, 2 KB RAM, dual 16-bit Timer_D modules (TD0/TD1), USCI_A0 (UART/IrDA/SPI) and USCI_B0 (I²C/SPI), 10-bit 200-ksps ADC with 8 external + 2 internal channels, and 16-channel comparator. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems requiring sub-µA standby current.

For engineers reviewing the MSP430F5172IRSBR datasheet, MSP430F5172IRSBR pinout, MSP430F5172IRSBR application, or MSP430F5172IRSBR equivalent, key selection criteria include its 40-pin WQFN (5 mm × 5 mm) package, 5-V-tolerant I/Os with 20-mA drive strength, LPM3 standby current of 1.1 µA at 3 V, and integrated hardware multiplier supporting 32-bit operations - all critical for low-power embedded control and analog sensing designs.

Technical Context

The MSP430F5172IRSBR implements a 16-bit RISC CPUXV2 core with constant generators and 40-ns instruction cycle time. Its unified clock system integrates FLL-based frequency stabilization, VLO (10 kHz), REFO (32.768 kHz), XT1 (32 kHz–25 MHz), and programmable LDO for regulated core voltage (VCORE).

Peripherals are managed via a port mapping controller enabling dynamic reassignment of secondary functions (e.g., USCI, Timer_D, ADC inputs) across GPIO pins. The device supports three DMA channels, CRC16 engine, and wake-up from LPM3 in under 5 µs - optimized for deterministic real-time response in energy-constrained applications.

Key Specifications

Pinout & Package

Package: 40-pin WQFN (RSB), 5 mm × 5 mm, 0.4 mm pitch, thermally enhanced with exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5152IRSBR and MSP430F5132IRSBR, the MSP430F5172IRSBR provides 2× more Flash than the F5152 and 4× more than the F5132 - enabling richer firmware (e.g., BLE stack integration, advanced filtering) while retaining identical low-power performance, pin compatibility, and peripheral feature set across the RSB package family.

Availability

MSP430F5172IRSBR is available at Aetrix Electronics and suitable for analog sensor systems, LED lighting controllers, and digital power supply monitors requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430F5172IRSBR 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-level integration.

The MSP430F51x2 product line was designed specifically for ultra-low-power sensing and measurement applications - balancing rich analog/mixed-signal peripherals, deterministic real-time response, and sub-µA standby operation in compact packages like the 40-pin WQFN.

FAQ

What is the maximum operating frequency of the MSP430F5172IRSBR?

The MSP430F5172IRSBR supports a maximum MCLK frequency of 25 MHz using an external crystal (XT1) or digitally controlled oscillator (DCO) with FLL stabilization. Its 40-ns instruction cycle time enables full-speed execution at this rate, making it suitable for time-critical signal processing and communication tasks without compromising ultra-low-power operation in idle states.

Does the MSP430F5172IRSBR support 5-V logic interfaces?

Yes, the MSP430F5172IRSBR features up to twelve 5-V-tolerant digital I/O pins with programmable 20-mA drive strength. These pins accept 5-V input signals while powered from a 1.8–3.6-V supply, eliminating the need for external level shifters when interfacing with legacy 5-V sensors, displays, or logic circuits - a key advantage in mixed-voltage industrial designs.

How many analog input channels does the MSP430F5172IRSBR ADC support?

The MSP430F5172IRSBR integrates a 10-bit, 200-ksps ADC (ADC10_A) supporting up to eight external analog input channels (A0–A7) plus two internal channels: the on-chip temperature sensor and the internal reference voltage (VEREF+). This configuration enables simultaneous monitoring of multiple physical parameters within a single compact device.

What debug interface does the MSP430F5172IRSBR use?

The MSP430F5172IRSBR supports both 4-wire JTAG and 2-wire Spy-Bi-Wire (SBW) debugging via the RST/NMI/SBWTDIO and TEST/SBWTCK pins. SBW mode reduces PCB footprint and connector count while maintaining full flash programming, breakpoint setting, and real-time variable inspection capabilities - ideal for space-constrained embedded systems.

Is the MSP430F5172IRSBR pin-compatible with other members of the MSP430F51x2 family?

Yes, the MSP430F5172IRSBR in the 40-pin WQFN (RSB) package shares identical pinout, electrical characteristics, and peripheral mapping with the MSP430F5152IRSBR and MSP430F5132IRSBR. This allows direct substitution within the same footprint for memory-scaling design variants without PCB redesign or firmware modification.