STM32L031K4U6

Access line ultra-low-power 32-bit MCU based on Arm® Cortex®-M0+, with up to 32KB Flash, 8KB SRAM, 1KB EEPROM and ADC.

Key features

• Ultra-low-power platform 1.65V to 3.6V power supply, -40 to 125°C temperature range
• 0.23μA Standby mode (2 wakeup pins)
• 0.35μA Stop mode (16 wakeup lines)
• 0.6μA Stop mode + RTC + 8 KB RAM retention
• Down to 76μA/MHz in Run mode
• 5μs wakeup time (from Flash memory)
• 41μA 12-bit ADC conversion at 10 ksps
• Core: Arm 32-bit Cortex-M0+
• From 32 kHz up to 32 MHz max. 0.95 DMIPS/MHz
• Reset and supply management: Ultra-safe, low-power BOR (downout reset) with 5 selectable thresholds, Ultralow power POR/PDR, Programmable voltage detector (PVD)
• Clock sources: 1 to 25 MHz crystal oscillator, 32 kHz oscillator for RTC with calibration, High speed internal 16 MHz factory-trimmed RC (+/- 1%), Internal low-power 37 kHz RC, Internal multispeed low-power 65 kHz to 4.2 MHz RC PLL for CPU clock
• Pre-programmed bootloader
• USART, SPI supported
• Development support: Serial wire debug supported
• Up to 38 fast I/Os (31 I/Os 5V tolerant)
• Memories: Up to 32-Kbyte Flash with ECC, 8-Kbyte RAM, 1-Kbyte of data EEPROM with ECC, 20-byte backup register, Sector protection against RW operation
• Rich Analog peripherals: 12-bit ADC 1.14 Msps up to 10 channels (down to 1.65 V), 2x ultra-low-power comparators (window mode and wake up capability, down to 1.65 V), 7-channel DMA controller, supporting ADC, SPI, I²C, USART, Timers, 5x peripherals communication interface, 1x USART (ISO 7816, iFDA), 1x UART (low power), Up to 2 SPI interfaces, up to 16 Mbits/s, 1x I²C (SMBus/PMBus), 8x timers: 1x 16-bit with up to 4 channels, 2x 16-bit with up to 2 channels, 1x 16-bit ultra-low-power timer, 1x SysTick, 1x RTC and 2x watchdogs (independent/window), CRC calculation unit, 96-bit unique ID
• All packages are ECOPACK2