STM32L412KBT6TR

Microcontrollers Overview

The STM32L412KBT6TR is an ultra-low-power microcontroller based on the Arm Cortex-M4 core with a floating-point unit, operating at frequencies up to 80 MHz. It features 128 Kbytes of Flash memory and 40 Kbytes of SRAM. The device includes a Quad SPI interface, two 12-bit ADCs, comparators, an operational amplifier, and a low-power RTC. Communication interfaces comprise three I2Cs, two SPIs, three USARTs, one LPUART, and a crystal-less USB full-speed device. It supports external SMPS operation for enhanced power efficiency.

Microcontrollers Feature Summary

• Ultra-low-power architecture with external Switched-Mode Power Supply (SMPS) support for optimized energy consumption
• Integrated Floating-Point Unit (FPU) within the Cortex-M4 core for efficient mathematical processing
• Crystal-less USB full-speed device capability simplifying hardware design
• Comprehensive protection mechanisms including readout protection, write protection, and Firewall

Microcontrollers Applications

• Battery-powered wearable devices requiring extended operational life
• Industrial control systems utilizing motor control timers
• Smart home appliances with capacitive sensing requirements
• Medical instrumentation needing precise analog signal acquisition

Microcontrollers Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging configuration when sourcing components. Confirm that the external SMPS supply voltage range aligns with system power design constraints. Ensure compatibility with the LQFP-32 package dimensions during PCB layout planning. Cross-reference the manufacturing date code against project lifecycle requirements to maintain long-term availability.

Microcontrollers Selection Notes

Select this component when application demands balance between high-performance DSP capabilities and strict power budget limitations. The inclusion of an FPU makes it suitable for complex algorithms without sacrificing efficiency. Consider the external SMPS option if input voltage varies significantly or if thermal management is critical. Evaluate peripheral count against I/O requirements to ensure no unused resources drive unnecessary power consumption.

Microcontrollers Part Context

This part belongs to the STM32L412xx family, which extends the ultra-low-power portfolio with enhanced analog features and security. It shares the Cortex-M4 core foundation with other L4 series devices but offers specific memory and peripheral configurations tailored for cost-sensitive, battery-operated applications. The family emphasizes flexibility through multiple power modes and robust data protection mechanisms.

Microcontrollers Replacement Considerations

Direct pin-to-pin replacements within the same package may include other STM32L412 variants with different memory sizes or temperature ranges. Verify functional equivalence regarding the external SMPS requirement and USB crystal-less feature before substitution.