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M24256E-FDW6TP データシート(PDF) 13 Page - STMicroelectronics

部品番号 M24256E-FDW6TP
部品情報  256-Kbit serial I²C bus EEPROM with configurable device address and preprogrammed device address
PDF  46 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M24256E-FDW6TP データシート(HTML) 13 Page - STMicroelectronics

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6.1.1
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, as shown in Figure 7. 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 6.
Figure 6. Write mode sequence 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
M24256E-F
Write operations on memory array
DS12687 - Rev 3
page 13/46



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