UM91214 - Microcontroller Interface

[CMOS]

Hi,
I want to interface UM91214B/HT9315 Phone Dialer IC with 89C51 microcontroller. Can I directly connect row and column pins of this IC to the microcontroller?

Thanks.

 

[glenjoy]

You need analog switches first.

 

[CMOS]

That means I have to connect 16 analog switches at row-column intersection for a 4x4 matrix.
Is there any other easily available dialer IC which can be interfaced with a microcontroller?

Thanks.

 

[Shashank_parab]

Hi !
you can use lm5089 or mt 8888 ,
pls dont ask me how to interface them , You can find it in their datasheets

regards,
Shashank