STM32L431CBU6

STM32L431CBU6 is an ultra-low-power with FPU Arm Cortex-M4 MCU with 128 Kbytes of flash memory. This ultra-low-power microcontroller is based on the high-performance Arm® Cortex®-M4 32bit RISC core operating at a frequency of upto 80 MHz. The Cortex-M4 core features a floating point unit (FPU) single precision which supports all Arm® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security. This device embeds high-speed memories (flash memory upto 256Kbyte, 64Kbyte of SRAM), a Quad SPI flash memories interface, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32bit multi-AHB bus matrix. It embeds several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, proprietary code readout protection and firewall.

• 128Kb of flash memory size, 64Kb SRAM
• (1 (16bit) advanced control, 2 (16bit) 1 (32bit) general purpose) timers, RTC
• (2 (16bit) basic, SysTick, watchdog (independent window)) timers, 1 tamper pins
• (2 SPI, 2 I²C, 2 USART, LPUART, SAI, CAN) communication interface, 26 GPIOs
• 2 wakeup pins, 3 capacitive sensing channels (12bit ADC, 10 number of channels)
• 12bit DAC channels(2), 80MHz maximum CPU frequency
• Operating voltage range from 1.71V to 3.6V, batch acquisition mode (BAM), brown out reset (BOR)
• Upto 83 fast I/Os, most 5V-tolerant, RTC with HW calendar, alarms and calibration
• 14-channel DMA controller, true random number generator, CRC calculation unit, 96-bit unique ID
• Industrial temperature range from -40°C to 85°C, QFN48 package