LSM303DLM Datasheet, PDF (11/38 Pages) STMicroelectronics – Sensor module:3-axis accelerometer and 3-axis magnetometer

LSM303DLM
Module specifications
2.3
Communication interface characteristics
2.3.1
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.
f_(SCL)
t_w(SCLL)
t_w(SCLH)
t_su(SDA)
t_h(SDA)
SCL clock frequency
SCL clock low time
SCL clock high time
SDA setup time
SDA data hold time
0
100
4.7
4.0
250
0.01
3.45
t_r(SDA) t_r(SCL) SDA and SCL rise time
1000
t_f(SDA) t_f(SCL) SDA and SCL fall time
300
t_h(ST)
START condition hold time
4
t_su(SR)
Repeated START condition
setup time
4.7
t_su(SP)
STOP condition setup time
4
t_w(SP:SR)
Bus free time between STOP
and START condition
4.7
1. Data based on standard I²C protocol requirement, not tested in production.
2. Cb = total capacitance of one bus line, in pF.
I²C fast mode ⁽¹⁾
Min.
Max.
0
400
1.3
0.6
100
0.01
0.9
20 + 0.1C_b(2)
300
20 + 0.1C_b(2)
300
0.6
0.6
0.6
1.3
Unit
KHz
µs
ns
µs
ns
µs
Figure 3. I²C slave timing diagram ^(b)
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b. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both ports.
Doc ID 018725 Rev 1
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