INTRODUCTION TO MICROPEOCESSOR
MICROCOMPUTER SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is an 8251 Programmable Communication Interface function that serializes the parallel data output by the processor, automatically inserting start, stop, and parity bits or sync characters.
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Convert
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Process
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Receive
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Transmit
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Explanation:
Detailed explanation-1: -The 8251 is a USART (Universal Synchronous Asynchronous Receiver Transmitter) for serial data communication. As a peripheral device of a microcomputer system, the 8251 receives parallel data from the CPU and transmits serial data after conversion.
Detailed explanation-2: -The control words of 8251A are divided into two functional types 1. Mode Instruction control word 2. Command Instruction control word Mode Instruction control word:-This defines the general operational characteristics of 8251A.
Detailed explanation-3: -Transmit Buffer: The transmit buffer accepts parallel data from the CPU, adds the appropriate framing information, serializes it, and transmits it on the TxD pin on the falling edge of TxC.
There is 1 question to complete.