ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit Single-Core 80MHz 1MB (1M x 8) FLASH 132-UFBGA (7x..
ARM® Cortex®-M3 STM32F1 Microcontroller IC 32-Bit Single-Core 24MHz 128KB (128K x 8) FLASH..
Real Time Clock (RTC) IC Clock/Calendar 128B I²C, 2-Wire Serial 20-SSOP (0.209", 5.30mm Width)..