STM32U3基于Arm®Cortex®-M33内核，能够满足智能应用中对功耗和性能最严苛的要求，这些应用涵盖可穿戴设备、个人医疗设备、家庭自动化系统以及工业传感器等领域。
产品介绍
• 采用 LQFP64 引脚封装的 STM32 微控制器
• 内部 SMPS，用于产生 Vcore逻辑供电，由带“-Q”后缀的板标识
• USB Type-C sink 设备 FS
• 与 ARDUINOUno V3 共享一个用户LED
• 复位按钮(B2) 和 用户按钮(B1)
• 1 Mbyte Flash and 256 Kbytes SRAM
• 板载连接器:
· – USB Type-C
· – ARDUINO® Uno V3
· – ST morpho 扩展针座，可完全访问所有的 I/O口
• 灵活的电源选项：STLINK / USB / VBUS、用户 USB 连接器或外部电源
• 板载 STLINK-V3EC 调试 / 编程器，具有 USB 重新枚举功能：大容量存储、虚拟COM端口、调试端口
SMPS 通过从内部 DC-DC 转换器产生 Vcore逻辑供电，显著降低运行模式下的功耗
Nucleo-64 板上有三个时钟源：
LSE 是 RTC 的 32.768 kHz晶振
ST-LINK_MCU的时钟 (24MHz)
HSE 是 U385RG 的 16MHz (未焊接)
默认时钟源使用 MSI (内部 RC 振荡器)
芯片资源
| 资源 | 描述 |
|---|---|
| 封装 | LQFP-64 |
| 核心 | Cortex-M33 with FPU, MPU, DSP and TrustZone |
| 最高频率 | 最高 96MHz (MSI：24 MHz) |
| 信号处理 | ADF音频数字滤波器 |
| Flash | 1 MB |
| SRAM | 256 kB |
| 控制器 | GPDMA (12通道) 控制器 |
| GPIO数量 | 51 / 47 (SMPS使用时) |
| 模拟接口 | 2个ADC (12位), 17 / 15通道 (关闭 / 开启 SMPS) 2通道 DAC (12位) 2个运算放大器 2个ULP比较器 |
| 通信接口 | 3 x I2C 3 x SPI 1 x Octo SPI 2 x I3C 2 x USART / UART 1 x LPUART 1 x SAI 1 x FDCAN 1 x USB FS 1 x SD/MMC 1 x IRTIM |
| 定时器 | 1 x 16位高级 3 x 32位 + 3 x 16位通用 2 x 16位基本 4 x 16位低功耗 1 x RTC 2 x SysTick 2 x 看门狗 |
很荣幸有这个试用的机会，先让我们搭建一下开发环境，点个灯试试水。
使用STM32CubeMX软件来生成项目项目工程
打开时钟及Debug
查看原理图，LD2的IO对应为PA5，配置PA5为输出，设置上拉
生成工程并编译，添加LED控制语句
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE2) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSIS;
RCC_OscInitStruct.MSISState = RCC_MSI_ON;
RCC_OscInitStruct.MSISSource = RCC_MSI_RC0;
RCC_OscInitStruct.MSISDiv = RCC_MSI_DIV8;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
|RCC_CLOCKTYPE_PCLK3;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSIS;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET);
/*Configure GPIO pin : PA5 */
GPIO_InitStruct.Pin = GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
下载就可以看到LD的亮灭了。
总结：
从目前的操作来看，该款板子还是比较简单易上手的，板载的资源也比较充足，还带有CANFD收发器:支持灵活数据速率的控制器局域网通信，适合想要体验低功耗的小伙伴们入手。