STM32 && Gas Sensor

🚀 Understanding hashtag#STM32 I/O Voltage Limits
When working with STM32 microcontrollers, understanding the voltage limits of the I/O pins is crucial to prevent damage and ensure reliable operation
💡 Core Voltage Logic Levels
STM32 GPIO pins typically operate at 3.3V logic levels.
Input thresholds:
LOW: 0V to ~0.8V (logic "0").
HIGH: ~2.0V to 3.3V (logic "1").
⚠️ 5V Tolerance
Not all STM32 GPIO pins are 5V-tolerant!
Check the datasheet or reference manual:
If marked as FT (5V-Tolerant), the pin can safely accept 5V as an input.
Non-FT pins have an absolute maximum voltage of VDD + 0.3V (typically 3.6V for a 3.3V system).
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