STM32L431CB
Overview
- Ultra-low-power with FlexPowerControl - 1.71 V to 3.6 V power supply - -40 °C to 85/105/125 °C temperature range - 200 nA in VBAT mode: supply for RTC and 32x32-bit backup registers - 8 nA Shutdown mode (5 wakeup pins) - 28 nA Standby mode (5 wakeup pins) - 280 nA Standby mode with RTC - 1.0 µA Stop 2 mode, 1.28 µA with RTC - 84 µA/MHz run mode - Batch acquisition mode (BAM) - 4 µs wakeup from Stop mode - Brown out reset (BOR) - Interconnect matrix
- Core: Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait-state execution from Flash memory, frequency up to 80 MHz, MPU, 100DMIPS and DSP instructions
- Performance benchmark - 1.25 DMIPS/MHz (Drystone 2.1) - 273.55 CoreMark® (3.42 CoreMark/MHz @ 80 MHz)
- Energy benchmark - 176.7 ULPBench® score
- Clock Sources - 4 to 48 MHz crystal oscillator - 32 kHz crystal oscillator for RTC (LSE) - Internal 16 MHz factory-trimmed RC (±1%) - Internal low-power 32 kHz RC (±5%) - Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by LSE (better than ±0.25 % accuracy) - Internal 48 MHz with clock recovery - 2 PLLs for system clock, audio, ADC
