![]() Set to one at the end of bit 7 time in mode 0, and at the beginning of the stop bit for other modes. ![]() Bit 8 of received data in modes 2 and 3 stop bit in mode1. ![]() Set/cleared by the program in modes 2 and 3. Set to 1 to enable reception cleared to 0 to disable reception. If set to 1 for mode 1, no interrupt will be generated unless a valid stop bit is received. When set to 1 an interrupt is generated if bit 9 of the received data is a 1 no interrupt is generated if bit 9 is a 0. Set/cleared by the program to enable multiprocessor communications in modes 2 and 3. SM0 SM1 Mode Baudrate 0 0 Shift Register (Mode 0) Fosc/12 0 1 8-bit UART (Mode 1) Variable (Set by Timer 1) 1 0 9-bit UART (Mode 2) Fosc/32 or Fosc/64 1 1 9-bit UART (Mode 3) Variable (Set by Timer 1) These Two bits are used to select the Mode of the UART. PCON (Power Control Register) – Byte Addressable SCON (Serial Control Register).SBUF (Serial Buffer Register) – Byte Addressable.SCON (Serial Control Register) – Bit Addressable.We can set only byte by byte.įirst, we will see the SFRs. For example, for a single bit, we can set weather 1 or 0.īyte Addressable: We cant assign the values bit by bit. Bit Addressable: We can assign the values bit by bit.
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