STM32L431CC Series

Ultra-low-power with FPU Arm Cortex-M4 MCU 80 MHz with 256 Kbytes of Flash memory

Catalog

Ultra-low-power with FPU Arm Cortex-M4 MCU 80 MHz with 256 Kbytes of Flash memory

Part	Speed	Number of I/O	Core Processor	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Package / Case	Peripherals	Connectivity	Supplier Device Package	Data Converters	Mounting Type	Core Size	Oscillator Type	Program Memory Type	Operating Temperature [Max]	Operating Temperature [Min]	RAM Size	Program Memory Size	Data Converters [custom]	Data Converters [custom]	Supplier Device Package [y]	Supplier Device Package [x]
STMicroelectronics STM32L431KBU6TR	80 MHz	26 I/O	ARM® Cortex®-M4	3.6 V	1.71 V	32-UFQFN Exposed Pad	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus QSPI SAI SPI SWPMI UART/USART	32-UFQFPN (5x5)	A/D 10x12b D/A 2x12b	Surface Mount	32-Bit Single-Core	Internal	FLASH	85 °C	-40 °C	64 K	128 KB
STMicroelectronics STM32L431CBT3	80 MHz		ARM® Cortex®-M4F	3.6 V	1.71 V	48-LQFP	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus QSPI SAI SPI SWPMI UART/USART	48-LQFP (7x7)	A/D 10x12b SAR D/A 2x12b	Surface Mount	32-Bit Single-Core	External Internal	FLASH	125 °C	-40 °C	64 K	128 KB
STMicroelectronics STM32L431RBY6TR	80 MHz	52	ARM® Cortex®-M4	3.6 V	1.71 V	64-UFBGA WLCSP	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus MMC/SD QSPI SAI SPI SWPMI UART/USART	64-WLCSP		Surface Mount	32-Bit Single-Core	Internal	FLASH	85 °C	-40 °C	64 K	128 KB	12 b	16	3.13	3.14
STMicroelectronics STM32L431RCT6	80 MHz	52	ARM® Cortex®-M4	3.6 V	1.71 V	64-LQFP	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus MMC/SD QSPI SAI SPI SWPMI UART/USART	64-LQFP (10x10)		Surface Mount	32-Bit Single-Core	Internal	FLASH	85 °C	-40 °C	64 K	256 KB	12 b	16
STMicroelectronics STM32L431CBU6	80 MHz	39 I/O	ARM® Cortex®-M4	3.6 V	1.71 V	48-UFQFN Exposed Pad	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus QSPI SAI SPI SWPMI UART/USART	48-UFQFPN (7x7)	A/D 10x12b D/A 2x12b	Surface Mount	32-Bit Single-Core	Internal	FLASH	85 °C	-40 °C	64 K	128 KB
STMicroelectronics STM32L431CBT3TR	80 MHz		ARM® Cortex®-M4F	3.6 V	1.71 V	48-LQFP	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus QSPI SAI SPI SWPMI UART/USART	48-LQFP (7x7)	A/D 10x12b SAR D/A 2x12b	Surface Mount	32-Bit Single-Core	External Internal	FLASH	125 °C	-40 °C	64 K	128 KB
STMicroelectronics STM32L431VCI7	80 MHz	83	ARM® Cortex®-M4	3.6 V	1.71 V	100-UFBGA	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus MMC/SD QSPI SAI SPI SWPMI UART/USART	100-UFBGA (7x7)	A/D 16x12b SAR D/A 2x12b	Surface Mount	32-Bit Single-Core	External Internal	FLASH	105 °C	-40 °C	64 K	256 KB
STMicroelectronics STM32L431CCU6	80 MHz	39 I/O	ARM® Cortex®-M4	3.6 V	1.71 V	48-UFQFN Exposed Pad	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus QSPI SAI SPI SWPMI UART/USART	48-UFQFPN (7x7)	A/D 10x12b D/A 2x12b	Surface Mount	32-Bit Single-Core	Internal	FLASH	85 °C	-40 °C	64 K	256 KB
STMicroelectronics STM32L431CCT6TR	80 MHz	39 I/O	ARM® Cortex®-M4	3.6 V	1.71 V	48-LQFP	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus QSPI SAI SPI SWPMI UART/USART	48-LQFP (7x7)	A/D 10x12b D/A 2x12b	Surface Mount	32-Bit Single-Core	Internal	FLASH	85 °C	-40 °C	64 K	256 KB
STMicroelectronics STM32L431CBT6TR	80 MHz		ARM® Cortex®-M4	3.6 V	1.71 V	48-LQFP	Brown-out Detect/Reset DMA PWM WDT	CANbus I2C IrDA LINbus QSPI SAI SPI SWPMI UART/USART USB	48-LQFP (7x7)	A/D 10x12b SAR D/A 2x12b	Surface Mount	32-Bit Single-Core	External Internal	FLASH	85 °C	-40 °C	64 K	128 KB

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

• 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

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 data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security. The STM32L431xx devices embed high-speed memories (Flash memory up to 256 Kbyte, 64 Kbyte of SRAM), a Quad SPI flash memories interface (available on all packages) and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix. The STM32L431xx devices embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, proprietary code readout protection and Firewall. The devices offer a fast 12-bit ADC (5 Msps), two comparators, one operational amplifier, two DAC channels, an internal voltage reference buffer, a low-power RTC, one general-purpose 32-bit timer, one 16-bit PWM timer dedicated to motor control, four general-purpose 16-bit timers, and two 16-bit low-power timers. In addition, up to 21 capacitive sensing channels are available. They also feature standard and advanced communication interfaces. The 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. Some independent power supplies are supported: analog independent supply input for ADC, DAC, OPAMP and comparators. A VBAT input allows to backup the RTC and backup registers. The STM32L431xx family offers nine packages from 32 to 100-pin packages.