24C128C データシートの表示（PDF） - Atmel Corporation
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24C128C Datasheet PDF : 23 Pages
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6. Device Operation
Clock and Data Transitions: The SDA pin is normally pulled high with an external device. Data on the SDA pin
may change only during SCL low time periods. Data changes during SCL high periods will indicate a start or
stop condition as defined below.
Figure 6-1. Data Validity
SDA
SCL
Data Stable
Data
Change
Data Stable
Start Condition: A high-to-low transition of SDA with SCL high is a start condition that must precede any other
command.
Stop Condition: A low-to-high transition of SDA with SCL high is a stop condition. After a read sequence, the
stop command will place the EEPROM in a standby power mode.
Figure 6-2. Start and Stop Definition
SDA
SCL
Start
Stop
6
AT24C128C [DATASHEET]
Atmel-8734D-SEEPROM-AT24C128C-Datasheet_082015
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