can we use 40 mhz clock in pic16f877a

[snishanth512]

can we use 40 mhz clock in pic16f877a?

Will it work?

for interfacing glcd with pic.

to print the contents fast i am going for higher clock speed.

 

[keith1200rs]

Have a look at the datasheet! The maximum clock is 20MHz.

Keith

 

[Tahmid]

PIC16F877A has been designed to work with a maximum clock frequency of 20MHz. You shouldn't use anything above 20MHz as stable operation is not guaranteed. You may succeed in temporarily making the PIC work. But chances are it'll soon fail. So, 20MHz is the maximum you can use.

Here's the datasheet. Go through it. ww1.microchip.com/downloads/en/devicedoc/39582b.pdf

If you require 40MHz, use PIC18 instead. Some of the newer PIC16's work for up to 32MHz.

Hope this helps.
Tahmid.