ISL29028
I2C Electrical Specifications For SCL and SDA unless otherwise noted, VDD = 3V, TA = +25°C, REXT = 499k 1%
tolerance (Note 10). (Continued)
PARAMETER
DESCRIPTION
CONDITION
MIN
TYP MAX UNIT
tF
tSU:STO
tBUF
Fall Time of both SDA and SCL Signals
(Note 11)
Set-up Time for STOP Condition
Bus Free Time Between a STOP and START
Condition
20 + 0.1xCb
ns
600
ns
1300
ns
Cb
Capacitive Load for Each Bus Line
Rpull-up SDA and SCL system bus pull-up resistor Maximum is determined by tR and tF
1
tVD;DAT Data Valid Time
tVD:ACK Data Valid Acknowledge Time
VnL
Noise Margin at the LOW Level
0.1VDD
VnH
Noise Margin at the HIGH Level
0.2VDD
NOTES:
10. All parameters in I2C Electrical Specifications table are guaranteed by design and simulation.
11. Cb is the capacitance of the bus in pF.
400 pF
k
0.9 µs
0.9 µs
V
V
FIGURE 1. I2C TIMING DIAGRAM
FN6780 Rev 2.00
November 4, 2011
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