H3LIS331DL Datasheet, PDF (11/38 Pages) STMicroelectronics – MEMS motion sensor: low-power high-g 3-axis digital accelerometer

H3LIS331DL
Mechanical and electrical specifications
2.3
2.3.1
Communication interface characteristics
SPI - serial peripheral interface
Subject to general operating conditions for Vdd and Top.
Symbol
Table 5. SPI slave timing values
Parameter
Value ⁽¹⁾
Min.
Max.
Unit
t_c(SPC)
SPI clock cycle
100
ns
f_c(SPC)
SPI clock frequency
10
MHz
t_su(CS)
CS setup time
6
t_h(CS)
CS hold time
8
t_su(SI)
SDI input setup time
5
t_h(SI)
SDI input hold time
15
ns
t_v(SO)
SDO valid output time
50
t_h(SO)
SDO output hold time
9
t_dis(SO)
SDO output disable time
50
1. Values are guaranteed at 10 MHz clock frequency for SPI with both 4 and 3 wires, based on characterization results, not
tested in production.
Figure 3. SPI slave timing diagram ⁽²⁾
2. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both input and output ports.
3. When no communication is ongoing, data on CS, SPC, SDI and SDO are driven by internal pull-up resistors.
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