STM32L151RCT6A

Microcontrollers Overview

The STM32L151RCT6A is an ultra-low-power microcontroller based on the ARM Cortex-M3 core, operating at a maximum frequency of 32 MHz. It features 256 Kbytes of Flash memory and 32 Kbytes of SRAM within a 64-pin LFQFP package. The device supports a supply voltage range of 1.65 V to 3.6 V and includes integrated USB connectivity, two operational amplifiers, one 12-bit ADC, two DACs, and multiple communication interfaces including I2C, SPI, USART, and UART.

Microcontrollers Feature Summary

• Ultra-low-power architecture with standby current as low as 0.29 µA
• Integrated LCD controller with built-in voltage generator for multiplexed displays
• Capacitive sensing channels for touch interface implementation
• Flexible static memory controller available in larger packages

Microcontrollers Applications

• Battery-powered portable devices requiring extended standby life
• Applications utilizing LCD displays with contrast independent of supply voltage
• Touch-sensitive user interfaces using capacitive sensing channels
• USB-enabled consumer electronics and data logging tools

Microcontrollers Procurement Notes

Verify the specific suffix 'A' against official STMicroelectronics documentation to confirm it denotes a valid commercial grade or environmental compliance variant rather than a generic placeholder. Ensure the ordering code matches the exact pin count and package type (LFQFP-64) required by your PCB layout. Cross-reference the datasheet revision date to confirm peripheral availability and electrical characteristics.

Microcontrollers Selection Notes

Select this component when design requirements prioritize minimal power consumption in standby modes alongside moderate processing performance. The inclusion of analog peripherals like op-amps and comparators reduces external component count. Verify that the 256 Kbyte Flash capacity suffices for the application firmware before choosing over higher-density variants in the same family.

Microcontrollers Part Context

This part belongs to the STM32L151xC/C-A series, designed for ultra-low-power applications. It shares the Cortex-M3 core and peripheral set with other members of the L151 and L152 families, differing primarily in memory size and package options. The series emphasizes energy efficiency without sacrificing the connectivity features needed for modern embedded systems.

Microcontrollers Replacement Considerations

Direct substitutes include STM32L151RCT6 and STM32L152RCT6, provided the specific feature differences such as LCD controller presence or memory density are acceptable for the design.