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, 11:50 am

Downloads

New Downloads added.

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 Sat Dec 10 2005, 05:26 am

Downloads

Comments

JamesLex
Sat Apr 13 2024, 05:23 am
RobertWah
Fri Apr 12 2024, 08:01 pm
solar_qcor
Fri Apr 12 2024, 08:38 am
Rosalvascuth
Thu Apr 11 2024, 06:07 am
WilliamAmazy
Wed Apr 10 2024, 10:13 pm
slm_pkPn
Wed Apr 10 2024, 08:43 pm
LaurenBramn
Wed Apr 10 2024, 02:08 pm
axopit
Tue Apr 09 2024, 10:43 am