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M24512-R Datasheet(PDF) 22 Page - STMicroelectronics |
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M24512-R Datasheet(HTML) 22 Page - STMicroelectronics |
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22 / 40 page  Initial delivery state M24512-W M24512-R M24512-DR M24512-DF 22/40 Doc ID 16459 Rev 26 5.4 Read the lock status (M24512-D only) 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 Stop condition, so that: ● Start: 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 bits set to 1 (both in the memory array and in the Identification page - that is, each byte contains FFh). |
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