AT89S51 + 16x2 LCD

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
... Read Compelte post
Other Tags: p3   p0   pull ups   amp   open drain   
Posted by SGH on Sat Apr 21 2007, 06:20 AM

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8051 projects & Protocol libraries

Current Libraries:
I2C library (assembly) C coming soon..!
UART library (API provided)

8051 Projects:
AT89C4051 as RTC
CLI for 8051(AT89C51)... Read Compelte post
Other Tags: 8051 projects   library api   at89c51   uart   amp   
Posted on Fri Dec 09 2005, 11:56 PM

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Thu Jun 11 2020, 06:27 AM
anudee
sir could please send the code for I2C and wifi interfacing with 8051
scena
Tue May 19 2020, 10:29 PM
Does anyone have microcontroller programming software for STC15F104W (core 8051, 4 k, 128 byte, 6 I/O pin, UART ... DIL8), that works?
Sat May 02 2020, 07:38 PM
Tamu Gurung
Hi I am looking for a assembly language program for a digital decimal counter. Time counts max limit of 2 mins starting from 2.00 mins and ending at 0.00. time is to be displayed on 4 7-segment LED displays. Edsim51 simulator to be used. Thanks
Wed Mar 25 2020, 01:39 PM
Tajammul
Sir kindly send the code file i2c for 8051
ExperimenterUK
Fri Mar 13 2020, 10:36 PM
@ Rohitnani,ABEBE..which project ?
Fri Mar 13 2020, 12:55 PM
ABEBE
how can get hadwere of this project
Rohitnani
Sat Mar 07 2020, 05:11 PM
Sir, Could you please send me the zip file input password....

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