ST STM32L432KBU6

This is an ultra-low-power ARM Cortex-M4 32-bit MCU+FPU with 100DMIPS performance, up to 256KB Flash and 64KB SRAM, supporting USB FS, analog, and audio functions.

• Ultra-low-power with FlexPowerControl
• 1.71V to 3.6V power supply
• -40°C to 85/105/125°C temperature range
• 8 nA Shutdown mode (2 wakeup pins)
• 28 nA Standby mode (2 wakeup pins)
• 280 nA Standby mode with RTC
• 1.0 μA Stop 2 mode, 1.28 μA Stop 2 with RTC
• 84 μA/MHz run mode
• Batch acquisition mode (BAM)
• 4 μs wakeup from Stop mode
• Brown out reset (BOR) in all modes except shutdown
• Interconnect matrix
• Core: ARM 32-bit Cortex-M4 CPU with FPU, Adaptive real-time accelerator (ART AcceleratorTM) allowing 0-wait-state execution from Flash memory, frequency up to 80 MHz, MPU, 100DMIPS/1.25DMIPS/MHz (Dhrystone 2.1), 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: 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, USB, audio, ADC
• RTC with HW calendar, alarms and calibration
• Up to 3 capacitive sensing channels
• 11x timers: 1x 16-bit advanced motor-control, 1x32-bit and 2x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
• Up to 26 fast I/Os, most 5 V-tolerant
• Memories: Up to 256 KB single bank Flash, proprietary code readout protection
• 64 KB of SRAM including 16 KB with hardware parity check
• Quad SPI memory interface
• Rich analog peripherals (independent supply): 1x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 μA/Msps
• 2x 12-bit DAC, low-power sample and hold
• 1x operational amplifier with built-in PGA
• 2x ultra-low-power comparators
• 13x communication interfaces: USB 2.0 full-speed crystal less solution with LPM and BCD
• 1x SAI (serial audio interface)
• 2x I²C FM+(1 Mbit/s), SMBus/PMBus
• 3x USARTs (ISO 7816, LIN, IrDA, modem)
• 2x SPIs (3x SPIs with the Quad SPI)
• CAN (2.0B Active)
• SWPMI single wire protocol master I/F
• IRTIM (Infrared interface)
• 14-channel DMA controller
• True random number generator
• CRC calculation unit, 96-bit unique ID
• Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell ITM