AT24C01C_14 Datasheet, PDF (8/19 Pages) ATMEL Corporation – 2-wire Automotive Temperature Serial EEPROMs

Acknowledge: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words.
The EEPROM sends a zero to acknowledge that it has received each word. When the EEPROM is reading data
out, the host will transmit an ACK after each data word to indicate that the next word can be transmitted.This
happens during the ninth clock cycle.
Figure 6-3. Output Acknowledge
SCL
1
8
9
DATA IN
DATA OUT
Start
Acknowledge
Standby Mode: AT24C01C/02C/04C/08C features a low-power standby mode which is enabled:
 Upon power-up.
 After the receipt of the Stop condition and the completion of any internal operations.
2-wire Software Reset: After an interruption in protocol, power loss, or system reset, any 2-wire part can be
protocol reset by following these steps:
1. Create a Start condition.
2. Clock nine cycles.
3. Create another Start condition followed by Stop condition as shown in the following figures.
The device is ready for the next communication after the above steps have been completed.
Figure 6-4. Software Reset
Dummy Clock Cycles
SCL
1
2
3
Start
Condition
SDA
8
9
Start
Condition
Stop
Condition
8
AT24C01C/02C/04C/08C Automotive [DATASHEET]
Atmel-8819B-SEEPROM-AT24C01C-02C-04C-08C-Auto-Datasheet_072014