STM32L431xx operates in the -40 to +85 ?C (+105 ?C junction), -40 to +105 ?C (+125 ?C junction) and -40 to +125 ?C (+130 ?C junction) temperature ranges from a 1.71 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.
Features of STM32L431CBT6
? 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
32×32-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 ?A Stop 2 mode, 1.28 ?A with RTC
? 84 ?A/MHz run mode
? Batch acquisition mode (BAM)
? 4 ?s 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
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