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Microprocessors & Microcontrollers8051 Serial Communication

Which 8051 register is used as the serial data buffer for transmission and reception?

  • ASBUF
  • BPSW
  • CPCON only
  • DACC only
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Correct Answer: A. SBUF
Explanation: Software writes transmit data to SBUF and reads received serial data from SBUF.
Reference: Standard microprocessors and microcontrollers: 8051 serial communication
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