The access line ultra-low-power STM32L031x4/6 family incorporates the high-performance Arm Cortex-M0+ 32-bit RISC core operating at a 32 MHz frequency, high-speed embedded memories (up to 32 Kbytes of Flash program memory, 1 Kbytes of data EEPROM and 8 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals. The STM32L031x4/6 devices provide high power efficiency for a wide range of performance. It is achieved with a large choice of internal and external clock sources, an internal voltage adaptation, and several low-power modes.

The ultra-low-power STM32L031x4/6 family includes devices in 6 different packages from 20 to 48 pins. The description below gives an overview of the complete range of peripherals proposed in this family.

Applications:

1. Gas/water meters and industrial sensors
2. Healthcare and fitness equipment
3. Remote control and user interface
4. PC peripherals, gaming, GPS equipment
5. Alarm system, wired and wireless sensors, video intercom

Note:

1. For more technical details, go through the datasheet in the attachments
2. Image may vary from actual product in terms of brand and value printed

Specifications: 

1.  Power supply: 1.65 V to 3.6 V
2.  Temperature range: -40 to 125 °C
3. Arm 32-bit Cortex-M0+
4. Frequency: 32 kHz up to 32 MHz max.
5. Clock sources: – 1 to 25 MHz crystal oscillator
6. Up to 32-Kbyte Flash
7. 8-Kbyte RAM
8. 1-Kbyte of data EEPROM
9. Rich Analog peripherals: 12-bit ADC 1.14 Msps up to 10 channels