#### maniac84

##### Full Member level 6

**Baut rate of AT89S52**

Hi guys. Currently trying to figure out how to calculate the baud rate of my AT89S52 mcu.

From the data sheet (http://www.atmel.com/Images/doc4316.pdf), there's this formula to calculate the baud rate:

Then there's this table:

Is the table showing the BRL value which we can get from the formula?

I tried to use the formula given to calculate the BRL using Fosc=11.0592Mhz and 9600 baud rate, but I couldn't get the value from the table which is FDh. What I get is FAh. Why is it? Please help guys.

Last edited: