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Revision 2.4

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AS5030

Datasheet - Detailed Descri p ti on

Figure 12. Timing Diagram in 2-wire Read only Mode (differential transmission)

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

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

AGC

Angle

D5

D4

D3

D2

D1

D0

D7

D6

D5

D4

D3

D2

D1

D0

12

3

4

5

6

78

D14

D1

21

20

DI

CLK

D15

D0

timeout

100 n

CS

PWM

+5 V

VDD

VSS

VSS

C 2

VDD

VDD

13

11

16

15

C1

VSS

3

14

Input

Micro

Controller

AS5030