INTRODUCTION TO MICROPEOCESSOR
MODEL OF MICROPROCESSOR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The priority level of interrupt of 8051 for which SI(serial interrupt) interrupt is programmed is
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level 0
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level 1
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level 0 or level 1
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none of the above
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Explanation:
Detailed explanation-1: -Each interrupt level of 8051 can have two levels of priority namely level 0 and level 1. Level 1 is considered as a higher priority level compared to level 0. SI interrupt is programmed for level 1 priority. The bits, PT1, PT0, PX0 and PX1 when set, work at level 1, otherwise at level 0.
Detailed explanation-2: -Types of interrupt in 8051 Microcontroller Let’s see the five sources of interrupts in 8051 Microcontroller: Timer 0 overflow interrupt-TF0. External hardware interrupt-INT0. Timer 1 overflow interrupt-TF1.
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