LSM303AGR Datasheet, PDF (17/68 Pages) STMicroelectronics – ultra-low-power 3D accelerometer and 3D magnetometer

LSM303AGR
Module specifications
2.4.2
I²C - inter-IC control interface
Subject to general operating conditions for Vdd and Top.
Symbol
Table 7. I²C slave timing values (standard and fast mode)
Parameter
I²C standard mode ⁽¹⁾
Min
Max
I²C fast mode ⁽¹⁾
Min
Max
Unit
f_(SCL) SCL clock frequency
t_w(SCLL) Low period of the SCL clock
t_w(SCLH) High period of the SCL clock
0
100
0
400 kHz
4.7
1.3
μs
4.0
0.6
t_su(SDA) Data setup time
t_h(SDA) Data hold time
t_h(ST) START condition hold time
250
100
ns
0
3.45
0
0.9
4
0.6
t_su(SR) Setup time for a repeated START condition
4.7
0.6
μs
t_su(SP) Setup time for STOP condition
4
0.6
t_w(SP:SR) Bus free time between STOP and START condition
4.7
1.3
1. Data based on standard I²C protocol requirement, not tested in production.
Symbol
Table 8. I²C slave timing values (fast mode plus and high speed)
Parameter
I²C fast mode
plus⁽¹⁾
I²C high speed⁽¹⁾
Unit
Min
Max
Min
Max
f_(SCL) SCL clock frequency
0
1
0
3.4 MHz
t_w(SCLL) Low period of the SCL clock
t_w(SCLH) High period of the SCL clock
0.5
0.16
μs
0.26
0.06
t_su(SDA) Data setup time
50
10
ns
t_h(SDA) Data hold time
0
0
0.07
t_h(ST) START condition hold time
0.26
0.16
t_su(SR) Setup time for a repeated START condition
0.26
0.16
μs
t_su(SP) Setup time for STOP condition
0.26
0.16
t_w(SP:SR) Bus free time between STOP and START condition 0.5
1. Data based on standard I²C protocol requirement, not tested in production.
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