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The internal data word address counter maintains

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The internal data word address counter maintains


The last address accessed during the last read or write operation, incremented by one. Thisaddress stays valid between operations as long as the chip power is maintained.

Theaddress “roll over” during read is from the last byte of the last memory page to the firstbyte of the first page.

The address “roll over” during write is from the last byte of the cur-rent page to the first byte of the same page.Once the device address with the read/write select bit set to “1” is clocked in andacknowledged by the EEPROM, the current address data word is serially clocked out.

The microcontroller does not respond with an input “0” but does generate a followingstop condition.Current Address ReadRANDOM READ: A random read requires a “dummy” byte write sequence to load in thedata word address.

Once the device address word and data word address are clockedin and acknowledged by the EEPROM, the microcontroller must generate another startcondition. The microcontroller now initiates a current address read by sending a deviceaddress with the read/write select bit high.

The EEPROM acknowledges the deviceaddress and serially clocks out the data word. The microcontroller does not respondwith a “0” but does generate a following stop condition.

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