STM32L431CBT6

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 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