LSM303DLHTR Datasheet, PDF (14/47 Pages) STMicroelectronics – Sensor module: 3-axis accelerometer and 3-axis magnetometer

Module specifications
LSM303DLH
2.3
Communication interface characteristics
2.3.1
Accelerometer sensor I²C - inter IC control interface
Subject to general operating conditions for Vdd and top.
Table 5. I²C slave timing values
Symbol
Parameter
I²C standard mode ⁽¹⁾
Min
Max
I²C fast mode ⁽¹⁾
Min
Max
Unit
f_(SCL)
SCL clock frequency
0
100
0
400
KHz
t_w(SCLL)
t(s) ^tw(SCLH)
c _tsu(SDA)
du _th(SDA)
SCL clock low time
SCL clock high time
SDA setup time
SDA data hold time
4.7
4.0
250
0.01
3.45
Pro ^tr(SDA) ^tr(SCL) ^{SDA and SCL rise time}
1000
te ^t_f(SDA) ^t_f(SCL) SDA and SCL fall time
300
ole ^th(ST)
START condition hold time
4
bs t_su(SR)
Repeated START condition
setup time
4.7
- ^O t_su(SP)
STOP condition setup time
4
t(s) ^tw(SP:SR)
Bus free time between STOP
and START condition
4.7
uc 1. Data based on standard I²C protocol requirement, not tested in production.
d _{2. Cb = total capacitance of one bus line, in pF.}
Pro _{Figure 3. I2C slave timing diagram (b)}
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µs
0.6
100
ns
0.01
0.9
µs
20 + 0.1C_b(2)
300
ns
20 + 0.1C_b(2)
300
0.6
0.6
µs
0.6
1.3
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b. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both port.
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