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4256BWP Datasheet(PDF) 19 Page - STMicroelectronics

Part # 4256BWP
Description  256-Kbit serial I짼C bus EEPROM
PDF  39 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

4256BWP Datasheet(HTML) 19 Page - STMicroelectronics

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DocID6757 Rev 31
19/39
M24256-BW M24256-BR M24256-BF M24256-DR M24256-DF
Instructions
38
5.2
Read operations
Read operations are performed independently of the state of the Write Control (WC) signal.
After the successful completion of a Read operation, the device internal address counter is
incremented by one, to point to the next byte address.
For the Read instructions, after each byte read (data out), the device waits for an
acknowledgment (data in) during the 9th bit time. If the bus master does not acknowledge
during this 9th time, the device terminates the data transfer and switches to its Standby
mode.
Figure 10. Read mode sequences
Dev sel *
Byte addr
Byte addr
Dev sel
Data out 1
AI01105d
Data out N
Current
Address
Read
Dev sel
Data out
Random
Address
Read
Dev sel *
Data out
Sequential
Current
Read
Data out N
Dev sel *
Byte addr
Byte addr
Sequention
Random
Read
Dev sel *
Data out1
ACK
R/W
NO ACK
ACK
R/W
ACK
ACK
ACK
R/W
ACK
ACK
ACK
NO ACK
R/W
NO ACK
ACK
ACK
ACK
R/W
ACK
ACK
R/W
ACK
NO ACK



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