HCLA Series
Miniature amplified low pressure sensors
I²C Interface Parameters
Parameter
Symbol Min.
Typ.
Max.
100
10
Unit
Input high level
90
0
Input low level
% of Vs
Output low level
10
Ω
Pull-up resistor
500
CSDA
Load capacitance @ SDA
Input capacitance @ SDA/SCL
SCL clock frequency
400
10
pF
CI2C_IN
FSCL
tBUF
100*
1.3
0.8
1.3
0.6
1
400
kHz
Bus free time between STOP and START condition
Hold time (repeated) START condition, to first clock pulse
LOW period of SCL
tHD.STA
tLOW
tHIGH
HIGH period of SCL
tSU.STA
tHD.DAT
tSU.DAT
tR
Setup time repeated START condition
Data hold time
µs
0
Data setup time
0.2
Rise time of both SDA and SCL
Fall time of both SDA and SCL
Setup time for STOP condition
0.3
0.3
tF
tSU.STO
0.6
* recommended
Note: Sensortechnics recommends communication speeds of at least 100 kHz (max. 400 kHz).
Please contact your nearest Sensortechnics sales office for further information.
tSU;DAT
tHD;DAT
tSU;STA
tHD;STA
tR
tF
SCL
SDA
tHIGH
tLOW
tSU;STO
tBUF
tHD;STA
SCL
SDA
Fig. 2: Timing characteristics
E / 11629 / A
9/15
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