GPIO Maximum current Imax

GeoNomad
Posts: 3
Joined: Thu Dec 25, 2014 4:46 am

GPIO Maximum current Imax

Postby GeoNomad » Sat Jan 17, 2015 5:42 am

I see in the spec that it says:

Maximum Drive Capacity Imax 12 mA.

Is that the same whether source or sink?

Is that per pin, or for all pins total?

If per pin, what is the maximum for all GPIO pins together, as I doubt it is as much as 16 x 12 mA.

Thanks,
Peter

GeoNomad
Posts: 3
Joined: Thu Dec 25, 2014 4:46 am

Re: GPIO Maximum current Imax

Postby GeoNomad » Mon Jan 26, 2015 11:17 pm

Is there no answer to this question?

Espressif_Kelly
Posts: 140
Joined: Mon Oct 27, 2014 10:40 am

Re: GPIO Maximum current Imax

Postby Espressif_Kelly » Fri Jan 30, 2015 11:51 am

Dear Sir,

1.12mA here refers to the source current and sink current is greater than 12mA.

2.12mA is for per pin and each pin is the same.

3. Drive capacity current of all GPIO pins total can be 16 x 12 mA.

Thanks for your interests in ESP8266EX!

GeoNomad
Posts: 3
Joined: Thu Dec 25, 2014 4:46 am

Re: GPIO Maximum current Imax

Postby GeoNomad » Sun Feb 01, 2015 2:11 am

Thank you!

That is impressive. And useful.

bjpirt
Posts: 15
Joined: Sun Nov 09, 2014 4:15 pm

Re: GPIO Maximum current Imax

Postby bjpirt » Tue Nov 24, 2015 9:38 pm

@Espressif_Kelly You said that "sink current is greater than 12mA." - do you have a figure for how much current can be sunk per pin?

Many thanks,
Ben

Espressif_Kelly
Posts: 140
Joined: Mon Oct 27, 2014 10:40 am

Re: GPIO Maximum current Imax

Postby Espressif_Kelly » Mon Dec 14, 2015 10:22 am

Dear Sir,

The sink current of GPIO is about 20mA.

Thanks.

danny8376
Posts: 1
Joined: Tue Mar 15, 2016 2:39 am

Re: GPIO Maximum current Imax

Postby danny8376 » Tue Mar 15, 2016 2:40 am

Espressif_Kelly wrote:Dear Sir,

The sink current of GPIO is about 20mA.

Thanks.


Is there any info about peak source current ?

Espressif_Kelly
Posts: 140
Joined: Mon Oct 27, 2014 10:40 am

Re: GPIO Maximum current Imax

Postby Espressif_Kelly » Thu Mar 17, 2016 10:55 am

Hi danny8376,

The maximum source current of GPIO is about 12mA.

Thanks.

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