STM32L431KBU3TR

Ultra-low-power with FPU Arm Cortex-M4 MCU 80 MHz with 128 Kbytes of Flash memory

Parameters

Supply Voltage Min Volt	1.71
Supply Voltage Max Volt	3.6
Operating Temp Min Celsius	-40.0
Operating Temp Max Celsius	125.0
Core	Arm Cortex-M4
ECCN US	3A991.a.2
ECCN EU	NEC
Packing Type	Tape And Reel
RoHs compliant	Ecopack2
Grade	Industrial
Package Name	UFQFPN 32 5x5x0.55 mm

Description

The STM32L431xx devices are the ultra-low-power microcontrollers based on the high-performance Arm® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz. The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all Arm® single-precision...
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Key features

Key features
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 Up to 83 fast I/Os, most 5 V-tolerant RTC with HW calendar, alarms and calibration Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors 11x timers: 1x 16-bit advanced motor-control, 1x 32-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 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 output channels, low-power sample and hold 1x operational amplifier with built-in PGA 2x ultra-low-power comparators 16x communication interfaces 1x SAI (serial audio interface) 3x I2C FM+(1 Mbit/s), SMBus/PMBus 4x USARTs (ISO 7816, LIN, IrDA, modem) 1x LPUART (Stop 2 wake-up) 3x SPIs (and 1x Quad SPI) CAN (2.0B Active) and SDMMC interface 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™ All packages are ECOPACK2^® compliant

Out of Stock

Quantity	$ per unit	Savings
1-9	$4.59	20%
10-99	$4.12	28%
100-249	$3.37	41%
250-499	$3.21	44%
500-999	$2.87	50%
1000-2999	$2.42	58%
3000-10000	$2.30	60%
10000 +	Contact sales

Special Price $4.59 Regular Price $5.70

Parameters

Supply Voltage Min Volt	1.71
Supply Voltage Max Volt	3.6
Operating Temp Min Celsius	-40.0
Operating Temp Max Celsius	125.0
Core	Arm Cortex-M4
ECCN US	3A991.a.2
ECCN EU	NEC
Packing Type	Tape And Reel
RoHs compliant	Ecopack2
Grade	Industrial
Package Name	UFQFPN 32 5x5x0.55 mm

Description

Key features

Key features
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 Up to 83 fast I/Os, most 5 V-tolerant RTC with HW calendar, alarms and calibration Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors 11x timers: 1x 16-bit advanced motor-control, 1x 32-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 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 output channels, low-power sample and hold 1x operational amplifier with built-in PGA 2x ultra-low-power comparators 16x communication interfaces 1x SAI (serial audio interface) 3x I2C FM+(1 Mbit/s), SMBus/PMBus 4x USARTs (ISO 7816, LIN, IrDA, modem) 1x LPUART (Stop 2 wake-up) 3x SPIs (and 1x Quad SPI) CAN (2.0B Active) and SDMMC interface 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™ All packages are ECOPACK2^® compliant