Atmel AT24C256C
SOFTWARE RESET: After an interruption in protocol, power loss or system reset, any 2-wire part can be protocol
reset by following these steps:
a) Create a start bit condition,
b) Clock nine cycles,
c) 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 4-3. Software Reset
Start bit
Dummy Clock Cycles
Start bit
Stop bit
SCL
1
2
3
8
9
SDA
Figure 4-4. Bus Timing
SCL
SDA IN
tSU.STA
SDA OUT
tF
tLOW
tHD.STA
tHIGH
tHD.DAT
tLOW
tSU.DAT
tAA
tDH
tR
tSU.STO
tBUF
7
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