The state of signals in power down mode is
A. ALE is high
B. PSEN is low
C. ALE and PSEN(active low) are high
D. ALE and PSEN(active low) are low
Answer:A
The state of signals in power down mode is
A. ALE is high B. PSEN is low C. ALE and PSEN(active low) are high D. ALE and PSEN(active low) are low
Explanation: ALE and PSEN(active low) remain low in power down mode of 8051.