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oscillator for at89s52

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ronzam2002

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at89s8252 maximum oscillator frequency

What value of crystal will I use for the oscillator of at89s52?
 

ronzam2002 said:
What value of crystal will I use for the oscillator of at89s52?

well...

the range of oscillators that can be interfaced with it is:

4 M Hz - 12 M Hz


but people use 11.059 Mhz generally ... because it helps in serial communication...

If you are not working in serial communication then you can use 12 MHz. also ...

Fianlly,

11.059 MHz or 12 MHz.

Rest , according to requirements..

Added after 5 minutes:

hbaocr said:
hi, Yu can Use Crystal 4MB up to 40MB ,usually I use 12MB

frequency is represented by MHz and not Mb ...

Well,

The maximum capability of atmel's 89s52 is 12M Hz...
 

dear friends

atmel says the s5 is fully static
so we can use a frequency from 0Hz to 24 Mhz

pls check with the datasheets

ml
 

when the oscillator's frequency is high,the cpu's speed is high,you can choose you oscillator's frequency as you need. usually I us 12MHz and 11.0502MHz. IF the frequency is too high,AT89S52 will be less stable.
 

Oh, Hi there

Enough nitpicking

I agree with microlab.
0 to 24 MHZ.

For start 12MHZ is best choice
 

dear friends

there's a lot when you are selecting the frequency
when the frequency increases,the speed of the system also will increase
byt will increase the power consumption
so select your crystal according to the requirement.



ml
 

0 to 24 MHz, look the datasheet, some atmel IC can run with 33 MHz but it's not secure

Added after 7 minutes:

11.0592MHz is bether to have a bether baudrate, it's more exact when you use 9600 bps or similar, you can get exactly this value of bps, with 12MHz you can get some % of error but you can comunicate.
 

well i use the 11.0592 it is good in communication with the pc also
 

4MHz to 24MHz

but mostly 11.0592 which i always used and preffered due to the calculations easily available in books for 11.0592MHz crystal
 

first check the chip no , for maximum range there is a no. on chip

for ex
12PI = max'm 12 MHz
24PI = max'm 24 MHz
and also you can not use 24mHz for chip which has 12PI .

thanx
 

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