The STM32 L1 series is based on the ARM Cortex-M3 and extends the ultra-low-power concept with no compromise on performance.
It uses ST's proprietary ultra-low-leakage process technology (as utilised in the well-known STM8L) with an innovative autonomous dynamic voltage scaling and five low-power modes offering unprecedented platform flexibility to fit any application.
The STM32 L1 also offers dynamic voltage scaling, an ultra-low-power clock oscillator, LCD interface, comparator, DAC and hardware encryption.
But there is more to the STM32 L1 series than just being an ultra-low-power MCU. It offers a wide portfolio of features, memory sizes and package pin counts. Combining ultra-low power and performance, the portfolio covers from 32 to 512 Kbytes of Flash memory (with up to 80 Kbytes of SDRAM and 16 Kbytes of true embedded EEPROM) and from 48 to 144 pins.
This innovative architecture, with voltage scaling and an ultra-low-power MSI oscillator, gives your design more performance for a very low power budget. In addition, the large number of embedded peripherals, such as USB, LCD interface, op amp, comparators, ADC with fast on/off mode, DAC, capacitive touch and AES, makes the STM32 L1 series an expandable platform to fit all your requirements.
The series is available in four different lines - STM32L100 Value line, STM32L151, STM32L152 (LCD), STM32L162 (LCD and AES-128).
To simplify migration and give you all the flexibility you need, the STM32 L1 is pin-to-pin compatible with the different STM32 F series and opens the door to the full STM32 ecosystem.