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M24512-R Fiches technique(PDF) 11 Page - STMicroelectronics

No de pièce M24512-R
Description  512-Kbit serial I²C bus EEPROM
PDF  47 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M24512-R Fiches technique(HTML) 11 Page - STMicroelectronics

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5.1.1
Byte write
After the device select code and the address bytes, the bus master sends one data byte. If the addressed location
is write-protected, by write control (WC) being driven high, the device replies with NoAck, and the location is not
modified. If, instead, the addressed location is not write-protected, the device replies with Ack. The bus master
terminates the transfer by generating a stop condition, as shown in Figure 7.
Figure 7. Write mode sequences with WC = 0 (data write enabled)
WC
Byte Write
Dev sel
Byte addr
Byte addr
Data in
ACK
ACK
ACK
ACK
RW
WC
Dev sel
Byte addr
Byte addr
ACK
ACK
ACK
ACK
RW
Data in 1
Data in 2
Page Write
Page Write (cont’d)
WC (cont’d)
ACK
ACK
Data in N
M24512-W M24512-R M24512-DF
Write operations
DS6520 - Rev 31
page 11/47



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