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

[AJAY VEGAD]

#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;
                        
    }
}

[Ashutosh Bhatt]

the circuit is wrong.

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

[AJAY VEGAD]

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:

[Ashutosh Bhatt]

where and how u r measuring current?

[Author]

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