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Voltage Ranges for Low & High
Posted: Tue Apr 25, 2017 7:46 pm
by beg_dk
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
Re: Voltage Ranges for Low & High
Posted: Wed Apr 26, 2017 12:00 am
by WiFive
Data sheet says 30% and 70% of supply voltage
Re: Voltage Ranges for Low & High
Posted: Wed Apr 26, 2017 11:45 am
by beg_dk
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