LIS331HHTR Просмотр технического описания (PDF) - STMicroelectronics
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LIS331HHTR
STMicroelectronics
LIS331HHTR Datasheet PDF : 37 Pages
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LIS331HH
Mechanical and electrical specifications
2.3
Communication interface characteristics
2.3.1
SPI - serial peripheral interface
Subject to general operating conditions for Vdd and Top.
Table 5. SPI slave timing values
Symbol
Parameter
tc(SPC)
fc(SPC)
tsu(CS)
th(CS)
tsu(SI)
th(SI)
tv(SO)
th(SO)
tdis(SO)
SPI clock cycle
SPI clock frequency
CS setup time
CS hold time
SDI input setup time
SDI input hold time
SDO valid output time
SDO output hold time
SDO output disable time
Value (1)
Min
Max
100
10
6
8
5
15
50
9
50
Unit
ns
MHz
ns
Figure 3. SPI slave timing diagram (2)
CS (3)
SPC (3)
tsu(CS)
SDI (3)
SDO (3)
tc(SPC)
tsu(SI)
th(SI)
MSB IN
tv(SO)
MSB OUT
th(SO)
(3)
th(CS)
(3)
LSB IN
(3)
tdis(SO)
LSB OUT
(3)
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
2. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both Input and output port
3. When no communication is on-going, data on CS, SPC, SDI and SDO are driven by internal pull-up resistors
Doc ID 16366 Rev 1
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