M24128-DF datasheet(15/40 Pages) STMICROELECTRONICS

Part #	M24128-DF

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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15 / 40 page

DocID16892 Rev 23

15/40

M24128-BW M24128-BR M24128-BF M24128-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)

Byte Write

Dev sel

Byte addr

Data in

Page Write

Dev sel

Byte addr

Data in 1

Data in 2

AI01106d

Page Write (cont'd)

WC (cont'd)

Data in N

ACK

R/W

ACK

R/W

ACK

M24128-DF Datasheet(PDF) 15 Page - STMicroelectronics