16. Explain the mode of 8051 serial ports
In this mode 11 bits are transmitted(through TXD)or received(through RXD): astart bit data bits(LSB first, aprogrammable 9
th data bit a stop bit(1).in fact, mode is the same as mode in all respects except the baud rate. the baud rate in mode is variable.in all the four modes, transmission is intiated by any instruction that uses SBUF as a destination register.reception is initiated by any instruction that uses SBUF as a destination register.reception is intiated in mode by the condition R & REN=1.reception is initiated in other modes by the incoming start bit if REN-1.
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