STM32L052R8T6

Ultra-low-power 32-bit MCU based on Arm Cortex-M0+ architecture, featuring up to 64 KB Flash, 8 KB SRAM, 2 KB EEPROM, with USB, ADC, and DAC support.

Key features

• Ultra-low-power platform
• 1.65 V to 3.6 V power supply
• -40 to 125 °C temperature range
• 0.27 μA Standby mode (2 wakeup pins)
• 0.4 μA Stop mode (16 wakeup lines)
• 0.8 μA Stop mode + RTC + 8 KB RAM retention
• 88 μA/MHz in Run mode
• 3.5 μs wakeup time (from RAM)
• 5 μs wakeup time (from Flash memory)
• Core: Arm 32-bit Cortex-MO+ with MPU From 32 kHz up to 32 MHz max. 0.95 DMIPS/MHz
• Memories
• Up to 64 KB Flash memory with ECC
• 8 KB RAM
• 2 KB of data EEPROM with ECC
• 20-byte backup register
• Sector protection against R/W operation
• Up to 51 fast I/Os (45 I/Os 5V tolerant)
• Reset and supply management
• Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
• Ultra-low-power POR/PDR
• Programmable voltage detector (PVD)
• Oscillators
• 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
• Internal self calibration of 48 MHz RC for USB
• PLL for CPU clock
• Pre-programmed bootloader - USART, SPI supported
• Development support - Serial wire debug supported
• Rich Analog peripherals
• 12-bit ADC 1.14 Msps up to 16 channels (down to 1.65 V)
• 12-bit 1 channel DAC with output buffers (down to 1.8 V)
• 2x ultra-low-power comparators (window mode and wake up capability, down to 1.65 V)
• Up to 24 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
• 7-channel DMA controller, supporting ADC, SPI, I²C, USART, DAC, Timers
• 8x peripheral communication interfaces
• 1x USB 2.0 crystal-less, battery charging detection and LPM
• 2x USART (ISO 7816, IrDA), 1x UART (low power)
• Up to 4x SPI 16 Mbits/s
• 2x I²C (SMBus/PMBus)