ISL29030A_11 Datasheet, PDF (5/16 Pages) Intersil Corporation – Low Power Ambient Light and Proximity Sensor with Intelligent Interrupt and Sleep Modes

ISL29030A
I²C Electrical Specifications For SCL and SDA unless otherwise noted, V_DD = 3V, T_A = +25°C, R_EXT = 499kΩ 1% tolerance
(Note 11). Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
PARAMETER
DESCRIPTION
CONDITION
MIN TYP MAX 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
1300
ns
t_HIGH
HIGH period of the SCL Clock
600
ns
t_SU:STA
Set-up Time for a Repeated START Condition
600
ns
t_HD:DAT
Data Hold Time
30
ns
t_SU:DAT
Data Set-up Time
100
ns
t_R
Rise Time of both SDA and SCL Signals
(Note 12)
20 +
ns
0.1xC_b
t_F
Fall Time of both SDA and SCL Signals
(Note 12)
20 +
ns
0.1xC_b
t_SU:STO
Set-up Time for STOP Condition
600
ns
t_BUF
Bus Free Time Between a STOP and START
Condition
1300
ns
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. I²C limits are based on design/simulation and are not production tested.
12. C_b is the capacitance of the bus in pF.
1
0.1V_DD
0.2V_DD
400
pF
kΩ
0.9
µs
0.9
µs
V
V
FIGURE 1. I²C TIMING DIAGRAM
5
FN7722.1
March 31, 2011