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8051: Address Bus and Data Bus

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karan123

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address bus of 8051

Hello,

I have worked on 8051 from Last 4 years.At that time,I only used
Peripheral Mapped Interfacing.

Now I want to Memory Mapped Technique for Interfacing using
Address and Data Lines.

I have made one Test schematic as Attachment.For Operating two LCDs using
Same Data Bus and But Different Address.

But I could NOT Incorporate /RD and /WR Signals for LCD_EN.

MAY Be with AND or OR Gate IC Logic?

Can Anybody Suggest you how to implement /RD and /WR and how it work for LCD_ENs?

Which AND or OR IC NO. I have to needed?
 

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