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AS5130

Data Sheet - D e ta i l e d D e s c r i p t i o n

Figure 14. Analog OTP Verification

Redundancy Decoding

If a bit is not fused properly (analog readout levels violated), the redundancy bits can be used as shown in the table

below. Only one single bit can be overwritten with a logic HI. An improper fusing cannot be made undone.

Multi Turn Counter

An 8-bit register is used for counting the magnet’s revolutions. With each zero transition in any direction, the output of

a special counter is incremented or decremented. The initial value after reset is 0 LSB.

The multi turn value is encoded as complement on two. Clockwise rotation gives increasing angle values and positive

turn count. Counter clockwise rotation exhibits decreasing angle values and a negative turn count respectively.

Table 12.

<15:12>

replaced bit

<15:12>

replaced bit

0000

none

1000

7

0001

0

1001

8

0010

1

1010

9

0011

2

1011

10

0100

3

1100

11

0101

4

1101

none

0110

5

1110

none

0111

6

1111

none

Table 13.

Bit Code

Decimal Value

01111111

127

---

---

00000011

+3

00000010

+2

00000001

+1

00000000

0

11111111

-1

micro

controller

AS5130

100n

+5V

CS

CLK

DIO

PROG

AS5130

C1

I/O

Output

Output

12

10

2

11

C2

V

14 15

3

13