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Serial Communication



Serial communication through single wire 


Block Diagram Of UART

Block diagram of UART (a)Transmitter half

Block diagram of UART (b) Receiver half

Block diagram of UART transmitter for 11-bit transmission

Block diagram of UART receiver to receive 11 bits

Registers for Serial Data Communication

SCON register

Table: SCON register


PCON register

Serial Communication Modes

There are four serial communication modes such as
  • Mode 0—Shift register mode
  • Mode 1—Standard UART mode
  • Mode 2—Multiprocessor mode
  • Mode 3—9 bit UART mode

Multiprocessor Communication

Multiprocessor communication



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