AS5170 datasheet(34/47 Pages) AMSCO

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[v1-01] 2016-Apr-11

AS5170 − Application Information

17. Read reg(0x000A) to reg (0x001E) ---> Read register

step 3

18. Comparison of AS5170A/B Settings_Prog_final with

content of read register step 3

19. If point 18 is correct, start the OTP burn procedure by

writing: Reg(0x0062)=0x70 and Reg(0x0063)=0x51

20. Programming procedure is complete after 10ms

21. Clear the memory content writing 0x00 into reg

(0x001E)

22. Write Reg0x23=0x40 to set the threshold for the guard

band test (1)

23. 5ms wait time to refresh the non-volatile memory

content with the OTP content

24. Read reg(0x000A) to reg (0x001E) ---> Read register

step 4

25. If content from reg (0x001E) compares with content

from “Signature Byte” refresh was successful

26. Comparison of AS5170A/B Settings_Prog_final with

content of read register step 4. Mandatory: guard band

test (1).

27. If point 26 fails, the test with the guard band (1) was not

successful and the device is incorrectly programmed. A

reprogramming is not allowed.

28. Clear the memory content writing 0x00 into reg

(0x001E)

29. Write Reg0x23=0x00to set the threshold for the guard

band test (1)

30. 5ms wait time to refresh the non-volatile memory

content with the OTP content

31. Read reg(0x000A) to reg (0x001E) ---> Read register

step 5

32. If content from reg (0x001E) compares with content

from “Signature Byte” refresh was successful

33. Comparison of AS5170A/B Settings_Prog_final with

content of read register step 5. Mandatory: guard band

test (1)

34. If point 33 fails, the test with the guard band (1) was not

successful and the device is incorrectly programmed.

A reprogramming is not allowed.

35. Reset of the device. After power on the Sensor starts in

functional mode

Note(s):

1. Guard band test:

Restricted to temperature range: 25 °C ± 20 °C

Right after the programming procedure (max. 1 hour with same

Conditions 25°C ± 20 °C)

Same VDD voltage

The guard band test is only for the verification of the burned OTP fuses during

the programming sequence.

A use of the guard band in other cases is not allowed.

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