COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -An EEPROM read happens on the next instruction cycle. According to page 337 of the manual an erase write takes typically 4 msecs. But as the manual implies, its probably best to experiment with this in the development phase. Hi, An EEPROM read happens on the next instruction cycle.
Detailed explanation-2: -I will implements an emergency backup feature before power off, on Arduino Mega 2650. Arduino is powered by capacitor, for the time (I hope) of the EEPROM write. On AVR2650 Datasheet is reported that the typical EEPROM writing time is 3.3ms.
Detailed explanation-3: -The supported micro-controllers on the various Arduino and Genuino boards have different amounts of EEPROM: 1024 bytes on the ATmega328P, 512 bytes on the ATmega168 and ATmega8, 4 KB (4096 bytes) on the ATmega1280 and ATmega2560. The Arduino and Genuino 101 boards have an emulated EEPROM space of 1024 bytes.
Detailed explanation-4: -The operation of erasing consumes 15 to 20 minutes in EPROM. Erasing contents of EEPROM consumes 5 milliseconds. To erase and reprogram the system’s BIOS, EPROM chip has to be switched off from the circuit.