Nucleo-64 STM32L452

Overview

The Nucleo L452RE(-P) boards feature an ARM Cortex-M4 based STM32L452RE MCU with a wide range of connectivity support and configurations.

Here some highlights of these boards:

• STM32 microcontroller in LQFP64 package

• Arduino Uno V3 connectivity

• On-board ST-LINK/V2-1 debugger/programmer with SWD connector

• Flexible board power supply:

  • USB VBUS or external source(3.3V, 5V, 7 - 12V)

  • Power management access point

• Three LEDs: USB communication (LD1), user LED (LD2), power LED (LD3)

• One push-button: RESET

Hardware

The STM32L452RE SoC provides the following hardware IPs:

• Ultra-low-power with FlexPowerControl (down to 28 nA Standby mode and 84 µA/MHz run mode)

• Core: ARM® 32-bit Cortex® -M4 CPU with FPU, frequency up to 80 MHz, 100DMIPS/1.25DMIPS/MHz (Dhrystone 2.1)

• 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)

  • 2 PLLs for system clock, USB, audio, ADC

• RTC with HW calendar, alarms and calibration

• Up to 3 capacitive sensing channels: support touchkey, linear and rotary touch sensors

• 12x timers:

  • 1x 16-bit advanced motor-control

  • 1x 32-bit and 3x 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 512 KB single bank Flash, proprietary code readout protection

  • 160 KB of SRAM including 32 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 amplifiers with built-in PGA

  • 2x ultra-low-power comparators

• 17x communication interfaces - USB 2.0 full-speed crystal less solution with LPM and BCD - 1x SAI (serial audio interface) - 4x I2C FM+(1 Mbit/s), SMBus/PMBus - 3x USARTs (ISO 7816, LIN, IrDA, modem) - 1x UART (LIN, IrDA, modem) - 1x LPUART (Stop 2 wake-up) - 3x SPIs (and 1x Quad SPI) - CAN (2.0B Active) and SDMMC interface - 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*

More information about STM32L452RE can be found here:

• STM32L452RE on www.st.com

• STM32L452 reference manual