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 bit condition
2. Clock nine cycles
3. Create another Start bit followed by stop bit condition as shown below.
The device is ready for next communication after above steps has been completed.
Figure 6-3. Software Reset
Dummy Clock Cycles
1
2
3
8
9
SCL
SDA
Start
Bit
Start
Bit
Stop
Bit
Figure 6-4. Bus Timing
tHIGH
tF
tR
tLOW
tLOW
SCL
tSU.STA
tHD.STA
tHD.DAT
tSU.DAT
tSU.STO
SDA In
tAA
tDH
tBUF
SDA Out
Atmel AT24C128C [DATASHEET]
7
8734B–SEEPR–9/2012