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Using ON Semiconductor's serial EEPROMs in shared I/O configuration

Posted: 12 Feb 2010 ?? ?Print Version ?Bookmark and Share

Keywords:serial EEPROM? I/O configuration? communication interface?

ON Semiconductor's family of serial EEPROMs uses four signals for the communication interface: chip select (CS) for device selection, serial clock (SK or CLK) for synchronizing serial data to and from the device, data input (DI) to input serial data to the device and data output (DO) to output serial data from the device. This interface can be reduced to 3 signals by sharing DI and DO as a common input/output signal. However, precautions should be taken to prevent problems due to DI/DO contention.

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