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3.3V supply for ttl/rs232

Hi,
I find a problem when I wanted to run a ATMEGA32 with VCC supply of 3.3V, everything is okay except USART. I see that if supply voltage is 5V then USART works well. With the same ttl/rs232 module and supply voltage of 3.3V USART works fine with STM32 MCU. I used internal 8 Mhz clock both for AVR and ARM. what is the suggestion to overcome the problem in AVR?

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  • No, I'd say Hyperbole is how that code reviewer described their skills before getting the job. Since it would be way better if the code reviewer managed a constructive report about what was found wrong and things to consider to improve the code.

    Seems reasonable. Also highly likely if that code reviewer calls himself a consultant ;)

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  • No, I'd say Hyperbole is how that code reviewer described their skills before getting the job. Since it would be way better if the code reviewer managed a constructive report about what was found wrong and things to consider to improve the code.

    Seems reasonable. Also highly likely if that code reviewer calls himself a consultant ;)

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