M24128-DFMN6 datasheet(21/40 Pages) STMICROELECTRONICS

Part #	M24128-DFMN6

Description	128-Kbit serial I²C bus EEPROM

PDF	40 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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21 / 40 page

DocID16892 Rev 23

21/40

M24128-BW M24128-BR M24128-BF M24128-DF

Initial delivery state

5.4

Read the lock status (M24128-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.

Initial delivery state

The device is delivered with all the memory array bits and Identification page bits set to 1

(each byte contains FFh).

M24128-DFMN6 Datasheet(PDF) 21 Page - STMicroelectronics