Interfacing with RTC MCQ’s

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This set of Microcontroller Multiple Choice Questions & Answers (MCQs) focuses on “Interfacing with RTC”.

1. RTC chips use ______ to compute time, date when the power is off.
a) ac supply
b) generators
c) rectifiers
d) battery

2. DS12887 is known for as a ________
a) Communication device
b) Good battery device
c) RTC chip
d) All of the mentioned

3. RTC is used for __________
a) conversion
b) communication
c) real time and clock measurement
d) memory management

4. DS1307 is a parallel RTC with I2C bus.
a) true
b) false
c) cant be said
d) depends on the conditions

5. Vbat requires a positive signal of
a) 3V
b) 5V
c) 9V
d) 12V

6. DS1307 has a total of _______ bytes of RAM space.
a) 32
b) 64
c) 128
d) 256

7. DS1307 is a _______ pin IC and operates on _______ clock frequency.
a) 16, 8Mhz
b) 8, 16Mhz
c) 16, 32Mhz
d) 8, 32Khz

8. In DS1307, which out of the following is correct about the SQW pin?
a) input pin
b) output pin
c) i/o pin
d) none of the mentioned

9. DS1307 control register has an address of _________
a) 00H
b) 03H
c) 07H
d) 10H

10. What does the CH bit of the DS1307 demonstrate?
a) clock high
b) clock halt
c) clear high
d) clear halt

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