PixArt Imaging Inc.
PAS106BCB-283/PAS106BBB-283
CMOS Image Sensor IC
5.3 I2C Bus Timing
SD A
tBUF
tHD;STA
tr
tf
tSP
tf
tr
tSU;DAT
tLOW
SC L
tSU;STO
S
S
r
P
S
tHD;STA
tSU;STA
tHD;DAT
tHIGH
5.4 I2C Bus Timing Specification
STANDARD-MODE
UNIT
PARAMETER
SYMBOL
MIN.
10
MAX.
400
-
SCL clock frequency
kHz
us
fscl
Hold time (repeated) START condition.
After this period, the first clock pulse is generated.
4.0
tHD:STA
Low period of the SCL clock
4.7
0.75
4.7
-
us
us
us
us
ns
t
t
t
t
t
tr
LOW
HIGH
SU;STA
HD;DAT
SU;DAT
HIGH period of the SCL clock
-
Set-up time for a repeated START condition
Data hold time. For I2C-bus device
Data set-up time
-
0
3.45
250
30
-
Rise time of both SDA and SCL signals
Fall time of both SDA and SCL signals
Set-up time for STOP condition
Bus free time between a STOP and START
Capacitive load for each bus line
N.D.
ns(note1)
30
N.D.
ns(note1)
tf
4.0
-
-
us
us
pF
V
tSU;STO
4.7
tBUF
1
15
-
C
V
b
Noise margin at the LOW level for each connected
device (including hysteresis)
nL
0.1 VDD
Noise margin at the HIGH level for each
connected device (including hysteresis)
-
V
VnH
0.2 VDD
Note1: It depends on the "high" period time of SCL.
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10/14
V2.0, May 2002
PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
PIXART [ PIXART IMAGING INC. ]
