AK7401 Datasheet, PDF (6/29 Pages) Asahi Kasei Microsystems – Rotary Position Sensor IC

[AK7401]
11. Serial I/F Digital Characteristics
1) DC Characteristics
(Ta=-40 to +150C, V_DD=4.0 to 5.5V; unless otherwise specified)
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
Input High Level
Input Low Level
Input Current
Output High Level
Output Low Level
V_HSI
V_LSI
I_SI
V_HSO
V_LSO
I_OUT2=+400uA
I_OUT2=-700uA
0.7V_DD
-10
0.8V_DD
-0.3
V
0.3V_DD V
+10 μA
V
0.2V_DD V
2) AC Characteristics
(Ta=-40 to +150C, V_DD=4.0 to 5.5V; unless otherwise specified)
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
SCLK High Time
T_H
SCLK Low Time
T_L
SCLK Rise Time
(Note 4)
T_r
200
ns
200
ns
30
ns
SCLK Fall Time
(Note 4)
T_f
30
ns
CS Setup Time
T_CSS
100
CS Hold Time
T_CSH
200
Data Setup Time
T_DS
100
Data Hold Time
T_DH
100
Data Valid Time
T_DV
Cl_oad=100pF,
no load current
ns
ns
ns
ns
200
ns
Wait Time
T_EW EEPROM write time
20
ms
Wait Time
T_RW Register write time
2.5
μs
Note 4. This parameter is guaranteed by design.
T_r
T_f
0.7V_DD
SCLK
0.3V_DD
CS
SCLK
T_CSS
1
SIN/SOUT
OP3
T_DS T_DH
2
OP2
T_CSH
T_EW / T_RW
T_L
T_H
23
24
T_DV
D1
D0
Figure 3. Serial I/F AC Characteristics
014002685-E-01
-6-
2015/07