LSM303DLHC Datasheet, PDF (12/43 Pages) STMicroelectronics – Ultra compact high performance e-compass 3D accelerometer and 3D magnetometer module

Module specifications
LSM303DLHC
2.4
Communication interfaces characteristics
External pull-up resistors are required to support I²C standard and fast speed modes.
2.4.1
Sensor I²C - inter IC control interface
Subject to general operating conditions for Vdd and Top.
Table 6. 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 ^(c)
SDA
START
REPEATED
START
t_su(SR)
tw(SP:SR)
START
t_f(SDA)
SCL
t_r(SDA)
t_su(SDA)
th(SDA)
t_su(SP)
STOP
th(ST) tw(SCLL)
tw(SCLH)
12/42
tr(SCL)
tf(SCL)
Doc ID 018771 Rev 1
AM09238V1