Datasheet

DocID18204 Rev 6 21/36
M24M02-DR Initial delivery state
5.4 Read the lock status
The locked/unlocked status of the Identification page can be checked by transmitting a
specific truncated command [Identification Page Write instruction + one data byte] to the
device. The device returns an acknowledge bit if the Identification page is unlocked,
otherwise a NoAck bit if the Identification page is locked.
Right after this, it is recommended to transmit to the device a Start condition followed by a
S
top condition, so that:
• S
tart: the truncated command is not executed because the Start condition resets the
device internal logic,
• Stop: the device is then set back into Standby mode by the Stop condition.
6 Initial delivery state
The device is delivered with all the memory array bits and Identification page bits set to 1
(each byte contains FFh).