AMIS-749803 Datasheet, PDF (6/15 Pages) AMI SEMICONDUCTOR – (I2C) Ambient Light Sensor

AMIS–749803: (I²C) Ambient Light Sensor
Data Sheet
Table 3: AC Characteristics of I2CCLK and I2CDATA Signals in Standard and Fast Modes of Operation*
Parameter
Symbol
Standard Mode
Fast Mode
Min.
Max.
Min.
Max.
I2CCLK clock frequency
f_SCL
0
100
0
400
Hold time (repeated) START
condition. After this period, the first
t_HD;STA
4.0
-
clock pulse is generated
0.6
-
Low period of I2CCLK clock
t_LOW
4.7
1.3
High period of I2CCLK clock
t_HIGH
4.0
0.6
Set-up time for a repeated START
condition
t_SU;STA
4.7
0.6
Data hold time for I2C-bus devices
t_{HD;DAT_d}
0
Data set-up time
t_SU;DAT
250
Rise time of both I2CDATA and
I2CCLK signals
t_r
-
3.45
-
1000
0
0.9
100
-
5
300
Fall time of both I2CDATA and
I2CCLK signals
t_f
-
300
0.1
300
Set-up time for STOP condition
t_SU;STO
4.0
-
Bus free time between STOP and
START condition
t_BUF
4.7
-
0.6
-
1.3
-
Capacitive load for each bus line
C_b
Noise margin at the low level for each
-
400
-
400
connected device (including
hysteresis)
V_nL
0.1VDD
-
0.1VDD
-
Noise margin at the high level for
each connected device (including
hysteresis)
V_nH
0.2VDD
-
0.2VDD
-
*All values referred to V_IHmin and V_ILmax levels (see Table 2). Please refer to Figure 9 for more information on AC characteristics.
Unit
kHz
µS
µS
µS
µS
µS
nS
nS
nS
µS
µS
pF
V
V
Figure 9: AC Characteristics
AMI Semiconductor – July 2006, M-20599-001
6
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