Class_Notes_Set_8

Class_Notes_Set_8 - Serial Communication Can be classified...

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Unformatted text preview: Serial Communication Can be classified as: Asynchronous Synchronous Integrated circuits used with serial communication: UART - Universal Asynchronous Receiver Transmitter USART - Universal Synchronous Asynchronous Receiver Transmitter Asynchronous Receiver Transmitter Serial Communication Serial Communication Asynchronous Serial Communication Four parameters need to be set: Number of data bits used – 5, 6, 7, or 8. bit Parity – even, odd or no parity. Stop bits – 1, 1.5 or 2. bits 1, 1.5 or 2. Baud rate – 110, 150, 300, 600, 1200, 2400, 4800 or 9600. TTL and RS232 Signals TTL and RS232 Signals TTL Logic 1 – voltages in the range 2V to 5V. Logic 0 – voltages in the range 0V to 0.8V. Voltage range between 0.8V and 2V is undefined. RS232 RS232 Logic 1 – voltages in the range –3V to –25V. Logic 0 – voltages in the range 3V to 25V. in the range 3V to 25V Voltage range between –3V and 3V is undefined undefined. TTL and RS232 Signals ...
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Class_Notes_Set_8 - Serial Communication Can be classified...

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