STM32L021D4
Overview
- Ultra-low-power platform - 1.65 V to 3.6 V power supply - -40 to 125 °C temperature range - 0.23 µA Standby mode (2 wakeup pins) - 0.29 µA Stop mode (16 wakeup lines) - 0.54 µA Stop mode + RTC + 2 KB RAM retention - Down to 76 µA/MHz in Run mode - 5 µs wakeup time (from Flash memory) - 41 µA 12-bit ADC conversion at 10 ksps
- Core: Arm® 32-bit Cortex®-M0+ - From 32 kHz to 32 MHz max. - 0.95 DMIPS/MHz
- Reset and supply management - Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds - Ultralow power POR/PDR - Programmable voltage detector (PVD)
- Clock sources - 0 to 32 MHz external clock - 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 28 fast I/Os (23 I/Os 5V tolerant)
- Memories - 16 KB Flash memory with ECC - 2 KB RAM - 512 B of data EEPROM with ECC - 20-byte backup register - Sector protection against R/W operation -
