AS5047P datasheet(30/40 Pages) AMSCO

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[v1-00] 2014-Oct-31

AS5047P − Application Information

Figure 39:

OTP Memory Burn and Verification Flowchart

correct

START

Write reg(0x0018)

Write reg(0x0019)

Set the magnet to

the zero position

Write

Reg(0x0017(5:0))= reg(0x3FFF(5:0))

Reg(0x0016(7:0))= reg(0x3FFF(13:6))

Read

Reg(0x0016)

Reg(0x0017)

Reg(0x0018)

Reg(0x0019)

Write

Reg(0x0003)=0x08

Write

Reg(0x0016)=0x00

Reg(0x0017)=0x00

Reg(0x0018=0x00

Reg(0x0019)=0x00

Power-on cycle

Read

Reg(0x0016)

Reg(0x0017)

Reg(0x0018)

Reg(0x0016)

Write

Reg(0x0003)=0x40

Verify 2

correct

Read ANGLE

Write Angle into ZPOSL

and ZPOSM

Read reg(0x3FFF)

Read Register step 1

Comparison of written content

(settings and angle) with content

of Read Register step 1*

Unlock OTParea for read/write

(PROGEN=1)

Read OTP_CTRL

Set Guardband

Refresh memory with OTP

content

Read Register step 2

Comparison of written content (settings and

angle) with content of Read Register step 2*

Mandatory Guardband-Test

Read Register step 3

Verify 1

Clear memory

Start OTP burning procedure

(PROGOTP=1)

Power on cycle

AS5047P settings

Position of the magnet to

the zero position

Write

Reg(0x0003)=0x01

Write

Reg(0x0003)=0x08

Read

Reg(0x0003)

Reg(0x0003)=0x00

OTP burning procedure

complete if Reg(0x0003) =0x00

YES

Unlock OTParea for read/write

(PROGEN=1)

Write

Reg(0003)=0x04

Read

Reg(0x0016)

Reg(0x0017)

Reg(0x0018)

Reg(0x0016)

Guardbandtest fails.

Wrong programming.

Reprogramming not allowed

Not correct

Verify 3

Comparison of written content

(settings and angle) with content

of Read Register step 3*

END

Wrong programming

Reprogramming not

allowed

Not correct

END

Correct

programming and

verification

correct

Not correct

* During the comparison the bit0 of settings1 has to be ignored. This bit is pre-programmed.

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