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SEN0539-EN Voice Recognition module: power questions

userHead Sean.McReynolds 2023-11-18 02:53:27 293 Views0 Replies


I am wanting to interface my SEN0539-EN offline voice recognition module with a Teensy 4.1. To do this I will need to make sure that it will not output more than 3.3V on the I2C lines. However, I might need to power this with an external power supply as the teensy can only supply 3.3V @ 250mA from its onboard regulator, and I am already powering an MP3 module from the 3.3V regulator. Can I safely power the module with 5V and still have its logic be at 3.3V?