AK8975 Datasheet, PDF (9/34 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

5.3.4. 4-wire SPI
4-wire SPI is compliant with mode 3
Parameter
Symbol
Condition
Min.
Typ.
CSB setup time
Tcs
50
Data setup time
Ts
50
Data hold time
Th
50
SK high time
Twh
Vid≥2.5V
100
2.5V>Vid≥1.65V
150
SK low time
Twl
Vid≥2.5V
100
2.5V>Vid≥1.65V
150
SK setup time
Tsd
50
SK to SO delay time Tdd
(Note 12)
CSB to SO delay time Tcd
(Note 12)
SK rise time (Note 13)
Tr
SK fall time (Note 13)
Tf
CSB high time
Tch
150
(Note 12) SO load capacitance: 20pF
(Note 13) Reference value for design.
[4-wire SPI]
Tcs
CSB
Ts Th
Tdd
SK
SI
Hi-Z
SO




[Rise time and fall time]
Twh
Twl
Tr
Tf
0.9Vid
0.1Vid
SK


[AK8975/C]
Max. Unit
ns
ns
ns
ns
ns
ns
ns
ns
50
ns
50
ns
100
ns
100
ns
ns
Tch
Tsd
Tcd
Hi-Z
MS1187-E-02
-9-
2010/05