EngineersGarage

  • Engineers Garage Main Site
  • Visit our active EE Forums
    • EDABoard.com
    • Electro-Tech-Online
  • Projects & Tutorials
    • Circuits
    • Electronic Projects
    • Tutorials
    • Components
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Advertise
You are here: Home / Replies /  hi guys, extension of this

 hi guys, extension of this

|

Microcontroller › 8051 › pull up resistor ›  hi guys, extension of this

May 12, 2012 at 7:53 am #7769
Sindhu
Participant

 hi guys,

 

extension of this doubt…

 

why is the value of pull-up resistor used = 10k? for a supply of 5V, this yields a current of 0.5mA..

 

How does the microcontroller know whether there is a high signal or low signal on this pin?

RSS Recent Posts

  • Pickit 5 July 16, 2025
  • Pic18f25q10 osccon1 settings swordfish basic July 16, 2025
  • turbo jet fan - feedback appreciated. July 16, 2025
  • More fun with ws2812 this time XC8 and CLC July 16, 2025
  • I Wanna build a robot July 16, 2025

Stay Up To Date

Newsletter Signup
EngineersGarage

Copyright © 2025 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Engineers Garage

  • Engineers Garage Main Site
  • Visit our active EE Forums
    • EDABoard.com
    • Electro-Tech-Online
  • Projects & Tutorials
    • Circuits
    • Electronic Projects
    • Tutorials
    • Components
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Advertise