consideのブログ一覧

Accept POLLING: When the internally-timedwrite cycle has began plus the EEPROM inputs are dis-abled, acknowledge polling might be initiated. This involvessending a start off affliction followed by the gadget addressword.

The read/write little bit is consultant from the operationdesired. Only if the internal compose cycle has completed willthe EEPROM react that has a zero allowing the read orwrite sequence to carry on.Examine OperationsRead functions are initiated the identical way as produce opera-tions using the exception the read/write select bit in thedevice handle word is about to one. You can find two readoperations: byte study and sequential go through.

BYTE Read: A byte read is initiated that has a commence conditionfollowed by a 7-bit details term deal with along with a significant browse little bit.The AT24C01 will answer with an admit and thenserially output eight info bits. The microcontroller does notrespond using a zero but does deliver a pursuing stopcondition.

SEQUENTIAL Read through: Sequential reads are initiated thesame as being a byte study. Right after the microcontroller receives an8-bit data phrase, it responds with an acknowledge. As longas the EEPROM receives an acknowledge, it will eventually continueto increment the info term handle and serially clock outsequential data phrases.

When the memory tackle limit isreached, the info word tackle will “roll over” and thesequential examine will continue on. The sequential read through opera-tion is terminated if the microcontroller does notrespond with an enter zero but does generate a followingstop affliction.