serial comms

[Asjad]

Dear All,

Can anyone tell me if it is possible to have the serial comms working
on a PIC16F874 with a 2.4576Mhz crystal??

roughly how fast would it be??

Kind regards!

 

[Exo]

The speed depends on the baudrate generator value (BRG) you program into it...

The formula's to calculate are:
for high speed
Baudrate = OSC / (16 (BRG + 1))

for low speed
Baudrate = OSC / (64 (BRG + 1))

 

[Andy_123]

BRG=15 will give you 9600 baud
BRG=7 - 19200 baud

 

[feiutm9898]

why dont just use other value frequency. Is that compulsory to use this?
4Mhz is the common one.