TMS320F28335的功耗

以这个为基础 计算上GPIO需要驱动外设的个数及输出电流 计算上其他外设的功耗
未使用管脚的特殊处理 就基本差不多了

是的，下面的帖子

e2e.ti.com/.../568123

讲解的非常详细

You can calculate this estimation yourself using the device datasheet (SPRS439). Using Table 5-1, take the operational current numbers for the each supply, and calulate the total power consumption. You can compare your usecase against the peripherals listed in the test conditions column and then subtract the current for each peripheral you are not using by looking at Table 5-3 Typical Current Consumption by Various Peripherals (at 150 MHz).

This should give you a rough estimate of the total power consumption of the device. You can add margin on top of that so you ensure your power supply can handle the loads well. Doing some characterization of your power consumption after your system is designed will help you fine tune your numbers. If you have a development kit, you can power your device with a lab power supply and measure the current consumed either by your actual application code (later in the development process) or with some representative code using the modules you will be using.

您好，这个是表5-1，如果我需要计算所有引脚都使用的情况下的功耗，我是应该将上表中的所有电流最大值*对应VDD吗？如P=315mA*VDD+50mA*VDDIO+40mA*VDD3VFL+35mA*VDDA18+2mA*VDDA33,这样对吗？IDDIO是每个引脚的电流还是该电源对应所有引脚的总电流呢？

此外，留意到test conditions中的最后一句话，所有IO管脚都保持未连接的状态，意思是上表中的电源电流均为IO悬空时的电流吗？但是注释中又说IDDIO取决于IO引脚上的电气负载，那么上表中的电流究竟是IO连接负载还是没连接的情况呢？

这是表5-3，如果我的外设实际没有全用到，那么上表的电流指的是我每有一个引脚闲置所造成的电流减少吗？如ADC引脚有两个闲置，那么我的IDD=315mA-2*8mA？这样算的对吗？

谢谢您的回复！请问您的意思是指，我的这个p-f曲线的功率是没有加外设的功率吗？

实测一下就好了， 300mA左右。
实测工作时373mA，按下复位按键保持DSP复位状态，电流85mA，算下来大约373-85=288mA
主要是VCC1.8的电流比较大。