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Revision 1.09

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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

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.

The counter output can be reset by using command 19 – HYST_RST. It is immediately reset by the rising clock edge of

this bit. Any zero crossing between the clock edge and the next counter readout changes the counter value.

AS5130 Status Indicators

Lock Status Bit

The Lock signal indicates whether the angle information is valid (ADC locked, Lock = high) or invalid (ADC unlocked,

Lock = low). To determine a valid angular signal at best performance, the following indicators should be set:

Lock = 1

AGC = >00H and < 2FH

Note: The angle signal may also be valid (Lock = 1), when the AGC is out of range (00H or 2FH), but the accuracy of

the AS5130 may be reduced due to the out of range condition of the magnetic field strength.

<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

Bit Code

Decimal Value

01111111

127

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00000011

+3

00000010

+2

00000001

+1

00000000

0

11111111

-1

11111110

-2

11111101

-3

---

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10000000

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