M24C64-R datasheet(15/42 Pages) STMICROELECTRONICS

Part #	M24C64-R

Description	64-Kbit serial I2C bus EEPROM

PDF	42 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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15 / 42 page

M24C64-W M24C64-R M24C64-F M24C64-DF

Instructions

Doc ID 16891 Rev 27

15/42

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 8.

Figure 8.

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

M24C64-R Datasheet(PDF) 15 Page - STMicroelectronics