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You are here: Home / Topics / why avr microcontroller takes high input cuurrent about 30 ma………….

why avr microcontroller takes high input cuurrent about 30 ma………….

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Microcontroller › AVR › why avr microcontroller takes high input cuurrent about 30 ma………….

  • This topic has 3 replies, 2 voices, and was last updated 10 years, 11 months ago by Ashutosh Bhatt.
Viewing 4 posts - 1 through 4 (of 4 total)
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    Posts
  • August 9, 2014 at 5:08 am #4891
    AJAY VEGAD
    Participant

    #include <avr/io.h>
    #include <util/delay.h>
    void main()
    {
        DDRB=0x00;
        DDRA=0xff;
        PORTB=0x00;
        while(1)
        {
            if(bit_is_clear(PINB,PB0)==0)
                {
                    PORTA=0xff;
                }
            
                    PORTA=0x00;
                            
        }
    }my question is why avr micro controller takes high input curent of about 30 ma?this is my ckt and code

    August 10, 2014 at 6:59 pm #12000
    Ashutosh Bhatt
    Participant

    the circuit is wrong.

    you can not left the pin floating. it should be connected to ground through 1K  – 10K resistance.

    August 11, 2014 at 5:07 am #12001
    AJAY VEGAD
    Participant

    this ckt is suggested by you but again same problem is going on ……..it takes large 30 ma current…..incase of analog ics ..its only takes in turmes of micro ampere ……….but this is digital once but why it takes so large current?wysiwyg_imageupload:12968:

    August 14, 2014 at 7:50 am #12015
    Ashutosh Bhatt
    Participant

    where and how u r measuring current?

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