ISL29043_14 Datasheet, PDF (5/16 Pages) Intersil Corporation – Low Power Ambient Light and Proximity Sensor with Internal IR-LED and Digital Output

ISL29043
I²C Electrical Specifications For SCL and SDA unless otherwise noted, V_DD = 3V, T_A = +25°C, R_EXT = 499kΩ 1% tolerance
(Note 11). (Continued)
PARAMETER
DESCRIPTION
CONDITION
MIN
MAX
(Note 7) TYP (Note 7) UNIT
t_HD:STA
Hold Time (Repeated) START Condition
After this period, the first clock pulse is
600
ns
generated.
t_LOW
LOW Period of the SCL Clock
Measured at the 30% of VDD crossing.
t_HIGH
HIGH period of the SCL Clock
t_SU:STA
Set-up Time for a Repeated START Condition
t_HD:DAT
Data Hold Time
t_SU:DAT
Data Set-up Time
t_R
Rise Time of both SDA and SCL Signals
(Note 12)
t_F
Fall Time of both SDA and SCL Signals
(Note 12)
t_SU:STO
Set-up Time for STOP Condition
t_BUF
Bus Free Time Between a STOP and START Condition
C_b
Capacitive Load for Each Bus Line
R_pull-up
SDA and SCL System Bus Pull-up Resistor
Maximum is determined by t_R and t_F
t_VD;DAT
Data Valid Time
t_VD:ACK
Data Valid Acknowledge Time
V_nL
Noise Margin at the Low Level
V_nH
Noise Margin at the High Level
NOTES:
11. All parameters in I²C Electrical Specifications table are guaranteed by design and simulation.
12. C_b is the capacitance of the bus in pF.
1300
600
600
30
100
20 + 0.1xC_b
20 + 0.1xC_b
600
1300
1
0.1VDD
0.2VDD
ns
ns
ns
ns
ns
ns
ns
ns
ns
400 pF
kΩ
0.9 µs
0.9 µs
V
V
FIGURE 3. I²C TIMING DIAGRAM
5
FN7935.0
February 9, 2012