free 8051 Microcontroller Projects AVR PIC Microcontroller Projects Tutorials Ebooks Libraries, interfacing tutorials, lcd tutorial, stepper motor, dc motor 8051 assembly language programming electronics and communication ECE CSE pdf ebooks library BE final year project ideas Embedded systems
 
8051 microcontroller 8051 microcontroller
pull ups

AT89S51 + 16x2 LCD
Forum -> Project Addition or Changes
Hi Rickey, I'm trying to write some code for above parts.

1). For 8-bit operation : P0.0 - P0.7 for data and P3.2, P3.3 & P3.4 for RS, RW and E. Will I have problem with Port O as it is an open drain type ?. Will I need pull ups resistor for P0 ?.

2). For 4-bit operation : P0.4 - P0.7 for data and P3.2, P3.3 & P3.4 for RS, RW and E. Same question as above.

Thanks,
SGH
...[more]
p3   p0   pull ups   amp   open drain   
Posted by SGH on Friday 20 April 2007 - 23:20:14



Facebook Fans


Google Search for Microcontrollers!

Google
 

Creative Commons License This work is licensed under a
Creative Commons Attribution-Noncommercial 2.5 India License   |   Rickey's World Disclaimer

8051 Microcontroller Projects 8051 AVR tutorials PIC microcontroller, 8051 assembly language programming electronics and communication ECE CSE pdf ebooks library BE final year project ideas Embedded systems