STM32L151RBT7ATR

Microcontrollers Overview

The STM32L151RBT7ATR is an ultra-low-power microcontroller from STMicroelectronics, based on the ARM Cortex-M3 core. It features 128 Kbytes of Flash memory and 32 Kbytes of SRAM. The device operates at a maximum frequency of 32 MHz and includes USB connectivity. It supports a supply voltage range of 1.65 V to 3.6 V with Brown-out Reset (BOR). Key peripherals include a 12-bit ADC, two DACs, comparators, timers, and communication interfaces such as I2C, SPI, and USART.

Microcontrollers Feature Summary

• Ultra-low-power architecture with dynamic voltage regulation for extended battery life
• Integrated USB interface for high-speed connectivity
• Capacitive touch sensing channels for intuitive user interaction
• Real-time clock with backup registers for timekeeping in standby mode

Microcontrollers Applications

• Smart locks and access control systems
• Medical devices requiring low power consumption
• Industrial applications with harsh environmental demands
• Consumer electronics with touch sensing needs

Microcontrollers Procurement Notes

Verify the exact suffix '7ATR' against official STMicroelectronics documentation to confirm tape-and-reel packaging and specific temperature grade. Ensure compatibility with design-in requirements by checking pinout and peripheral availability. Confirm RoHS compliance status through authorized distributors or manufacturer datasheets before procurement.

Microcontrollers Selection Notes

Select this component when USB connectivity and moderate Flash capacity are required alongside ultra-low-power operation. Compare with STM32L151 variants offering different memory sizes or package types if space constraints differ. Consider the STM32L152 series if additional LCD controller features are necessary for display applications.

Microcontrollers Part Context

This part belongs to the STM32L151x6/8/B-A family within the broader STM32L1 series. It shares architectural similarities with other STM32L1 devices, ensuring code portability across the ecosystem. The series emphasizes performance-per-watt ratio, making it suitable for applications where energy efficiency is critical without sacrificing computational capability.

Microcontrollers Replacement Considerations

Direct substitutes include other STM32L151 variants with matching memory and package specifications. Verify pin-to-pin compatibility with STM32L152 devices if LCD functionality is not utilized. Cross-reference with STM32L0 or STM32L4 series only if architectural differences are acceptable.