Voltage Ranges for Low & High

beg_dk
Posts: 34
Joined: Thu Apr 06, 2017 5:57 am

Voltage Ranges for Low & High

Postby beg_dk » Tue Apr 25, 2017 7:46 pm

Hi

When for instance enabling deepsleep and having it wake up when eg. GPIO13 is set to LOW or HIGH like this:

esp_deep_sleep_enable_ext0_wakeup(GPIO_NUM_13, 1);

... what voltage ranges define LOW & HIGH?

Thanks

WiFive
Posts: 3529
Joined: Tue Dec 01, 2015 7:35 am

Re: Voltage Ranges for Low & High

Postby WiFive » Wed Apr 26, 2017 12:00 am

Data sheet says 30% and 70% of supply voltage

beg_dk
Posts: 34
Joined: Thu Apr 06, 2017 5:57 am

Re: Voltage Ranges for Low & High

Postby beg_dk » Wed Apr 26, 2017 11:45 am

Ok, I found this datasheet:

4.3. Digital Terminal Characteristics
(VDD = 3.3V, TA = 20°C, unless otherwise specified.)
Table 4-1. Absolute Maximum Ratings
Rating Condition Value Unit
Storage temperatue - -40 ~ 125 ℃
Maximum soldering
temperature - 260 ℃
Supply voltage IPC/JEDEC J-STD-020 +3.0 ~ +3.6 V
Table 4-2. Recommended operating conditions
Operating condition Symbol Min Typ Max Unit
Operating temperature - -40 20 125 ℃
Supply voltage VDD 3.0 3.3 3.6 V
Table 4-3. Digital terminal characteristics
Terminals Symbol Min Typ Max Unit
Input logic level low VIL -0.3 - 0.25VDD V
Input logic level high VIH 0.75VDD - VDD+0.3 V
Output logic level low VOL N - 0.1VDD V
Output logic level high VOH 0.8VDD - N V

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