M24256-BFMN6P(2012) 데이터 시트보기 (PDF) - STMicroelectronics

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M24256-BFMN6P
(Rev.:2012)

256-Kbit serial I²C bus EEPROM

STMicroelectronics 

M24256-BW M24256-BR M24256-BF M24256-DR M24256-DF

Instructions

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

ACK

ACK

ACK

ACK

Dev sel

Byte addr

Byte addr

Data in

R/W

WC

Page Write

WC (cont'd)

Page Write (cont'd)

ACK

ACK

ACK

ACK

Dev sel

Byte addr

Byte addr

Data in 1

Data in 2

R/W

ACK

ACK

Data in N

AI01106d

Doc ID 6757 Rev 30

15/40

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