STM32L4 series of ultra-low-power MCUs
STM32L476/486 devices extend the ultra-low-power portfolio and performance with an ARM® Cortex®-M4 core with DSP and floating-point unit (FPU) at 80 MHz. This series offers USB (OTG 2.0 full speed, LPM and BCD support), an LCD driver (4x44 or 8x40 with step-up converter) in addition to the large set of peripherals.
The STM32L476/486 portfolio offers from 256 Kbytes to 1 Mbyte of Flash and from 64- to 144-pin packages. Its memory range can easily be extended using SDIO, Quad SPI and FSMC interfaces.
128-/256-bit AES hardware encryption is available on STM32L486 devices.