HCE Series
Miniature amplified pressure sensors
SPI - SERIAL PERIPHERAL INTERFACE (cont.)
Interface parameters
Parameter
Input high level
Symbol
Min.
90
Typ.
Max.
100
10
Unit
Input low level
0
% of Vs
Output low level
10
Ω
Pull-up resistor
500
CMISO
CSPI_IN
Load capacitance @ MISO
Input capacitance @ each pin
Signal clock frequency
400
10
pF
fSCK
100*
200
2/fCLK
10
640
kHz
ns
tSPI_HD_MISO
tSPI_SU_MOSI
tSPI_SU_SS
MISO hold time after SCK sample slope
MOSI setup time before SCK sample slope
/SS setup time before SCK sample slope
* recommended
ns
Note: Sensortechnics recommends communication speeds of at least 100 kHz (max. 640 kHz).
Please contact your nearest Sensortechnics sales office for further information.
tSPI_SU_SS
tSPI_SU_MOSI
tSPI_HD_MISO
SCK
(CPOL=0)
MOSI
MISO
SS
Fig. 3: Timing characteristics
E / 11652 / A
6/11
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