STM32L4P5/STM32L4Q5 32-Bit Microcontrollers (MCUs) STMicroelectronics STM32L4P5/STM32L4Q5 32-Bit Microcontrollers (MCUs) extend the ultra-low-power portfolio and performance with an Arm® Cortex®-M4 core with DSP and floating-point unit (FPU) at 120MHz. The STM32L4P5 portfolio offers from 512Kbytes to 1Mbytes of Flash memory from 48 to 169-pin packages. The STM32L4Q5 is available with 1Mbytes of Flash memory and provides an additional encryption accelerator engine (AES, HASH, and PKA).