Hi guys,
It’s been a while since I been in circuit design and I am so lost in this STM32F405 Data Sheet, but I am trying to make this circuit that turns on an IR Emitter.
I can’t choose my MOSFET unless I know what voltage the STM32f405 pins can output. I want to PWM it as shown in the picture, but for some reason I can not figure out the Max “Output” Voltage the I/O pins can output. I tried looking in the data sheet, but all I could see is “Table 49. Output Voltage Characteristics.” It doesn’t say the min and max you can PWM out the pins. Where do I find this?
Table 11 Talks about it, but it only gives the Input Voltage Characteristics, not the Input.
Also kind of strange it says +4 on that table. So it’s telling me that The Max on a 5V tolerant pin is (3.3V+4V)= 7.3V…That doesn’t sound right for a 5V tolerant pin??? Where am I reading this wrong?
Also I can’t seem to find the Read V High and V Low values. I know it is 90 and 10 percent of VDD normally, but this is an I/O pin. How do I find this?
Thank you in advanced.
Sorry, I’m confusing myself. -_-
It’s been a while since I been in circuit design and I am so lost in this STM32F405 Data Sheet, but I am trying to make this circuit that turns on an IR Emitter.
I can’t choose my MOSFET unless I know what voltage the STM32f405 pins can output. I want to PWM it as shown in the picture, but for some reason I can not figure out the Max “Output” Voltage the I/O pins can output. I tried looking in the data sheet, but all I could see is “Table 49. Output Voltage Characteristics.” It doesn’t say the min and max you can PWM out the pins. Where do I find this?
Table 11 Talks about it, but it only gives the Input Voltage Characteristics, not the Input.
Also kind of strange it says +4 on that table. So it’s telling me that The Max on a 5V tolerant pin is (3.3V+4V)= 7.3V…That doesn’t sound right for a 5V tolerant pin??? Where am I reading this wrong?
Also I can’t seem to find the Read V High and V Low values. I know it is 90 and 10 percent of VDD normally, but this is an I/O pin. How do I find this?
Thank you in advanced.
Sorry, I’m confusing myself. -_-
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