【ST NUCLEO-U5A5ZJ-Q开发板测评】8、简单的功耗测试

chrisrh 发表于 2024-3-18 13:51

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Ultra-low-power with FlexPowerControl

• 150 nA Shutdown mode (24 wake-up pins) 
• 195 nA Standby mode (24 wake-up pins) 
• 480 nA Standby mode with RTC 
• 2 μA Stop 3 mode with 40-Kbyte SRAM 
• 8.2 μA Stop 3 mode with 2.5-Mbyte SRAM 
• 4.65 µA Stop 2 mode with 40-Kbyte SRAM 
• 17.5 µA Stop 2 mode with 2.5-Mbyte SRAM 
• 18.5 μA/MHz Run mode at 3.3 V

 

将万用表调制电流档，接在板子的IDD处，分别测试了正常RUN模式、Sleep模式、Stop模式、Standby模式下的电流情况

//BSP_LED_Init(LED1);

//HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);

//HAL_PWR_EnterSTOPMode(PWR_MAINREGULATOR_ON, PWR_STOPENTRY_WFI);

//HAL_PWR_EnterSTANDBYMode();

 

160Mhz运行模式下LED1闪烁测量的电流值为7.62mA：

  

切换至sleep模式测量的电流值为：4.18mA；

  

切换至stop模式测量的电流值为：1.5uA；

  

切换至standby模式测量的电流值为：0.6uA；

  

 

 
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freebsder 发表于 2024-3-18 17:25

stop和standby之后，还有哪些外设可以监听吗？

chrisrh 发表于 2024-3-18 22:49

freebsder 发表于 2024-3-18 17:25
stop和standby之后，还有哪些外设可以监听吗？

stop模式有3种，RAM都保持着电，不同stop下保留的外设不同。比如stop2模式下ADC4、SPI3、IIC3都还保持着；

但standby模式下就把所有的外设都掉电了，SWD也进不去，只有RST、BOR, RTC, TAMP, IWDG和24 I/Os (WKUPx)可以唤醒；

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【ST NUCLEO-U5A5ZJ-Q开发板测评】8、简单的功耗测试