What does 3V3 or 1V8 mean? - Electrical Engineering Stack Exchange
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?
Switching 3.3V with 3.3V signal - Electrical Engineering Stack Exchange
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.
How to correctly power an ESP32-H2 board with a battery
May 10, 2024 · I'd like to power my ESP32-H2-DevKitM-1 board with a 3.7 V, 2000 mAh Li-po battery. For this I think I must use this pin: Battery-3V3 The above picture is from the Pin Layout section of the
stm32 nucleo 3.3V usage - Electrical Engineering Stack Exchange
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 …
microcontroller - Stepping down automotive 12V to logic 3.3V ...
Nov 13, 2022 · I'm building a kind of CAN bus IO module with an ESP32. This module will control the taillights of my electric conversion project. What is a robust (reverse polarity protection, overvoltage …
voltage - Electrical Engineering Stack Exchange
Apr 3, 2023 · "5V tolerant I/O" is unfortunately a bit vague. While this means the pins will be happy interfacing with a 5V input, it doesn't actually clarify what logic level they output, though it would be …
Altium Designer 21 Duplicate Net Name Error
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 …
How can I translate logic signals from 5 V to 3.3 V?
Sep 21, 2023 · I have a range of data signals and clock signals that I want to translate down from approximately 5 V to the 3.3 V range. Is there an IC available to perform this task? The various …
Is a 5 V or 3.3 V supply voltage better for a microcontroller based ...
May 22, 2025 · I am about to design a new microcontroller based project. I checked all components (few) and all can operate at 3.3 V or 5 V. The microcontroller itself can also operate at 3.3 V or 5 V …
What's up with the operating voltages 5 V, 3.3 V, 2.5 V, 1.8 V, etc.?
Integrated circuits seem to have standard voltages of 5 V, 3.3 V, 2.5 V, 1.8 V, etc. Who decides these voltages? Why do smaller devices require lower voltages?