ST STM32L412CBT6

Ultra-low-power Arm® Cortex®-M4 32-bit MCU+FPU, 100DMIPS, up to 128KB Flash, 40KB SRAM, with analog peripherals and external SMPS.

• Ultra-low-power with FlexPowerControl
  • 1.71 V to 3.6 V power supply
  • -40 °C to 85/125 °C temperature range
  • 300 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
  • 16 nA Shutdown mode (4 wakeup pins)
  • 32 nA Standby mode (4 wakeup pins)
  • 245 nA Standby mode with RTC
  • 0.7 µA Stop 2 mode, 0.95 µA with RTC
  • 79 µA/MHz run mode (LDO Mode)
  • 28 µA/MHz run mode (@3.3 V SMPS 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
  • 442 ULPMark-CP
  • 165 ULPMark-PP
• 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
• Up to 52 fast I/Os, most 5 V-tolerant
• RTC with HW calendar, alarms and calibration
• Up to 12 capacitive sensing channels: support touchkey, linear and rotary touch sensors
• 10x timers: 1x16-bit advanced motor-control, 1x32-bit and 2x 16-bit general purpose, 1x 16-bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
• Memories
  • 128 KB single bank Flash, proprietary code readout protection
  • 40 KB of SRAM including 8 KB with hardware parity check
  • Quad SPI memory interface with XIP capability
• Rich analog peripherals (independent supply)
  • 2x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 µA/Msps
  • 2x operational amplifiers with built-in PGA
  • 1x ultra-low-power comparator
  • Accurate 2.5 V or 2.048 V reference voltage buffered output
• 12x communication interfaces
  • USB 2.0 full-speed crystal less solution with LPM and BCD
  • 3x I²C FM+(1 Mbit/s), SMBus/PMBus
  • 3x USARTs (ISO 7816, LIN, IrDA, modem)
  • 1x LPUART (Stop 2 wake-up)
  • 2x SPIs (and 1x Quad SPI)
  • IRTIM (Infrared interface)
• 14-channel DMA controller
• True random number generator
• All packages are ECOPACK2 compliant
• Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell