Status: | Active |
---|---|
Series: | STM32L431KB |
RoHS: | Compliant |
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 |
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) |
1.25 DMIPS/MHz (Drystone 2.1) |
273.55 CoreMark® (3.42 CoreMark/MHz @ 80 MHz) |
Energy benchmark 176.7 ULPBench® score |
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 |
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 |
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 |
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) |
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 |
Product Specifications |
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DS11453 Ultra-low-power Arm® Cortex®-M4 32-bit MCU+FPU, 100DMIPS, up to 256KB Flash, 64KB SRAM, analog, audio |
Programming Manuals |
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PM0214 STM32 Cortex®-M4 MCUs and MPUs programming manual |
Errata Sheets |
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ES0320 STM32L431xx device errata |
Magazine Articles |
---|
Design & Elektronik - August 2017 |
Design & Elektronik magazine - Benchmark ULPBench debunked |
Mcu, Arm Cortex-M4F, 80Mhz, Ufqfpn-32 | Newark Electronics |
MCU, ARM CORTEX-M4F, 80MHZ, UFQFPN-32 | element14 |
MCU 32-Bit STM32L ARM Cortex M4 RISC 128KB Flash 1.8V/2.5V/3.3V 32-Pin UFQFPN Tray | EBV Elektronik |
ARM Microcontrollers - MCU 16/32-BITS MICROS - UFQFPN-32 | Future Electronics |
Where can I find additional details, specifications and documents for a STM32L431KBU3?
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What category does STM32L431KBU3 fall under?
The STM32L431KBU3 is listed under Microcontrollers & Microprocessors > STM32 32-bit Arm Cortex MCUs > STM32 Ultra Low Power MCUs > STM32L4 Series > STM32L4x1.
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Is the STM32L431KBU3 RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.
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