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AS5030
Datasheet - D e t a i l e d D e s c r i p t i o n
Figure 12. Timing Diagram in 2-wire Read only Mode (differential transmission)
CLK
1
2
3
4
5
6
7
8
20
21
timeout
DI
D 15
D 14
D1
t TO
D0
Table 5. SSI Read-only Serial Bit Sequence (21bit read)
Read
D20 D19 D18 D17 D16 D15 D14 D13 D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
C2
lock
D5
D4
AGC
D3 D2
D1
D0
D7
D6
D5
Angle
D4 D3
D2
D1
D0
7.7 1-Wire PWM Connection
This configuration uses the least number of wires: only one line (PWM) is used for data, leaving the total number of connection to three, including
the supply lines. This type of configuration is especially useful for remote sensors.
Ultra-low Power Mode is not possible in this configuration, as there is no bi-directional data transmission.
If the AS5030 angular data is invalid, the PWM output will remain at low state. Pins that are not shown may be left open.
Note that the PWM output is invalid when the AGC is disabled.
Figure 13. Data Transmission with Pulse Width Modulated (PWM) Output
+5 V
VDD
11
13
VDD
Micro
Controller
CS
AS5030
VDD
100 n
Input
16
PWM
VSS
C1
14
C2
15
VSS
3
VSS
www.ams.com/AS5030
Revision 2.4
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