I2C: 3.3 V AND 5 V DEVICES WITHOUT LEVEL-SHIFTING ON 3.3 V BUS?
Do I really need a level-shifter if I use 5 V-powered devices on an I2C-bus that has pull-ups to 3.3 V? In my understanding the devices will only pull the lines (SDA, SCL) low (to ground) and never... From bing.com
MCU WORKING AT 3.3V AND RS485 DRIVER AT 5V - HOW DOES THIS …
Apr 15, 2022 I see no reason why this shouldn't work, at least for a "dirty solution". The inputs (driver input, driver/receiver enable) are recommended to be below 0.8V for a logic low and above 2V for a logic high - those are fulfilled in your circuit. The purpose of the Schottky diode at the receiver output is to block harmful 5V. Instead of using the direct pin output (which would be … From bing.com
Jul 16, 2021 When using an STM32 Nucleo powered by a 5V power supply, can I use its 3V3 pin to supply 50mA? Or do I need to use, for instance, a 3.3V linear regulator attached to my 5V power supply? From bing.com
RESISTOR REQUIREMENT FOR 3.3 V SUPPLY - ELECTRICAL ENGINEERING …
Oct 28, 2022 Can I safely power a LED with 3.3 V without a resistor? I have some LEDs that I typically power with 5 V and a 220 Ω resistor, but I can only supply 3.3 V at the moment. Additionally, I have push-b... From bing.com
CONVERT 3.3 V PWM TO 5 V PWM - ELECTRICAL ENGINEERING STACK …
Jan 24, 2023 My Raspberry Pi 3b generates a 3.3 V PWM signal, but I need 5 V PWM for my motor driver. Is there any chance to solve this problem? From bing.com
LOGIC LEVEL - DHT22 ISSUES AT 3.3V - WHAT ELSE COULD I TRY ...
May 3, 2023 The DHT22 datasheet says that 3.3V is the lowest it'll run at. Meaning at 3.2999V it won't work. What are the tollerances on the 3V3 rail? How stable is it? A very accurate 3V3 rail will be in the range 3.2V to 3.4V, so only 50% of the supplies will work, and that assumes zero ripple. You claim the supply is 3.3V and stable as far as you can measure it, what's the … From bing.com
Apr 9, 2021 I have a design that is erroring at compilation time with (among other errors) a bunch of duplicate net name errors. I have searched around including reading up on the top result for this problem ( From bing.com
Nov 13, 2015 I would like to convert regulated 5V (from USB port) to regulated 3.3V using AMS1117 regulator. Since input voltage is already regulated, are any capacitors needed for the circuit? If so, what kind From bing.com
SWITCHING 3.3V WITH 3.3V SIGNAL - ELECTRICAL ENGINEERING STACK …
Jul 12, 2024 The ESP32C3 has a battery input and a regulated 3V3 output, and the DFPlayer takes 3.3V power, so that would seem to be a straightforward way to power the circuit. From bing.com
WHAT DOES 3V3 OR 1V8 MEAN? - ELECTRICAL ENGINEERING STACK …
Mar 14, 2012 While reading a datasheet for an IC I came across the pin voltages being presented as 3V3 or 1V8. What does this representation stand for? From bing.com
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