The STM32L151CBU6A is a high-performance, ultra-low-power ARM Cortex-M3 microcontroller with 128 KB Flash, 32 MHz CPU, USB manufactured by STMicroelectronics. It has an ARM Cortex-M3 32 bit RISC core with 16 kHz to 32 MHz frequency range and dynamic voltage scaling. It incorporates up to 2 KB of SRAM, up to 32 KB of Flash memory, and up to 64 KB of optional embedded Flash which can be programmed using on-chip programming algorithms. It supports up to 4KB data and 2KB of instruction caches for better system performance while using lower dynamic power consumption. It also has a power management controller with 4 power saving modes for down to 100 nA in standby. Peripheral features include CAN, I2C, SPI, USART, USB, 12-bit ADC, and 10-bit DAC. It’s an ideal choice for developing robust and cost-effective applications for automation, energy management, data logging, asset tracking, security systems, wearables, and medical technology.