What is the use of sbuf in 8051 ?

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Re: sbuf in 8051

it is the serial data buffer.
when you want to transmit in serial mode write 8bit data here.
it will get transmitted serially in Txd.

when 8051 receives serial data in Rxd , it assembles and put the 8bit data here for reading.
 
Re: sbuf in 8051

to receive character:
if(RI)
{
byte = SBUF;
RI = 0;
}

to transmit character:

SBUF = byte;
while(!TI):
TI = 0;
 

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