Which bits in SCON register are designated for transmit and receive interrupts?
The bits TI and RI of SCON register are transmitting interrupt flag and receive interrupt flag respectively. The controller will set the TI bit during the transmission of stop bit of a data character in mode 1 to 3 and during the transmission 0 bit of a data character in mode-0.
What is the function of SCON register?
What is the function of SCON register? Solution: SCON register is mainly used for programming the start bits, stop bits and data bits of framing. As it consists of bits like RB8, TB8, SM0, SM1, SM2 etc.
Is the function of SCO n register?
What is the function of the SCON register? Explanation: SCON register is mainly used for programming the start bits, stop bits and data bits of framing. As it consists of bits like RB8, TB8, SM0, SM1, SM2 etc.
Why is a serial port called Serial MCQs?
Computer Organization Questions and Answers – Serial Port This set of Computer Organization and Architecture Multiple Choice Questions & Answers (MCQs) focuses on “Serial Port”. Explanation: In the isochronous mode of transmission, each bit of the data is sent per each cycle.
Which of the following is bit addressable register?
The registers, accumulator, PSW, B, P0, P1, P2, P3, IP, IE, TCON and SCON are all bit-addressable registers.
Which pins of the 8051 are set aside for serial communication?
In the 8051 microcontroller two pins are set aside for serial data communication. These two pins are RxD and TxD which are P3.
In which mode is TB8 used?
TB8 – the 9th bit that will be transmitted in mode 2/3 set/clear by software. RB8 – in mode 2/3 it is the 9th bit that was received in mode 1 if SM2 =0, RB8 is the stop bit that was received in mode it is not used.
What is TCON register?
Timer Control Register (TCON): TCON is another register used to control operations of counter and timers in microcontrollers. It is an 8-bit register wherein four upper bits are responsible for timers and counters and lower bits are responsible for interrupts. Timer Control Register (TCON)
Which devices could be connected to a serial port?
Serial ports are also used to connect equipment together, e.g. modems of one type or another (PSTN, 3G, satellite), GPS units, telescopes, sensors, power inverters, and many type of industrial control equipment.
What does the SCON Register of 8051 do?
Explain SCON register of 8051. Serial port control and status register is the special function register SCON. This register contain not only the mode selection bits but also the 9th data bit for transmit and receive (TB8 and RB8) and the serial part interrupt bits (TI and RI)
How are the registers in the 8051 microcontroller addressable?
Each bit in these SFRs corresponds to one physical Pin in the 8051 Microcontroller. All these Port Registers are both Bit Addressable and Byte Addressable. Writing 1 or 0 on a Port Register Bit will reflect as an appropriate voltage (5V and 0V) on the corresponding Pin.
Where is the SCON Register located on a microcontroller?
It is located as an address of 98H. Using SCON, you can control the Operation Modes of the Serial Port, Baud Rate of the Serial Port and Send or Receive Data using Serial Port. SCON Register also consists of bits that are automatically SET when a byte of data is transmitted or received.
How is SMOD bit used in 8051 microcontroller?
The SMOD Bit in the PCON Register is used to control the Baud Rate of the Serial Port. There are two general purpose Flag Bits in the PCON Register, which can be used by the programmer during execution. The Serial Control or SCON SFR is used to control the 8051 Microcontroller’s Serial Port.
