INTRODUCTION TO MICROPEOCESSOR
MICRO PROCESSOR AND MICRO CONTROLLER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When 8051 wakes up then 0x00 is loaded to which register
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DPTR
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SP
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PC
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PSW
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Explanation:
Detailed explanation-1: -When a program wakes up, then 0x00 is loaded to the program counter register because at this place the first op code is burnt.
Detailed explanation-2: -What are the contents of the IE register, when the interrupt of the memory location 0x00 is caused? Explanation: When interrupt of 0x00 is caused (the reset interrupt) then all the other interrupts will be disabled or the contents of the IE register becomes null.
Detailed explanation-3: -The flag bits of the PSW register are affected when arithmetic operations are executed in the 8051.
There is 1 question to complete.