Program Memory & Execution in 8051 - MCQs with Answers
Q1. What is the divisional range of program memory for internal and external memory portions respectively when enable access pin is held high (unity)?a. 0000H – 0FFFH & 1000H - FFFFH
b. 0000H – 1000H & 0FFFH - FFFFH
c. 0001H - 0FFFH & 01FFH - FFFFH
d. None of the above
View Answer / Hide Answer ANSWER: a. 0000H – 0FFFH & 1000H - FFFFH
Q2. Consider the following statements. Which of them is/are correct in case of program execution related to program memory?a. External Program memory execution takes place from 1000H through 0FFFFH only when the status of EA pin is high (1)
b. External Program memory execution takes place from 0000H through 0FFFH only when the status of EA pin is low (0)
c. Internal Program execution occurs from 0000H through 0FFFH only when the status of EA pin is held low (0)
d. Internal program memory execution occurs from 0000H through 0FFFH only when EA pin is held high (1)
Codes :a. A & C
b. B & D
c. A & B
d. Only A
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