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AS5247 Datasheet(PDF) 26 Page - ams AG

Part # AS5247
Description  14-bit Dual-die On-Axis Magnetic Rotary Position Sensor
PDF  37 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS5247 Datasheet(HTML) 26 Page - ams AG

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AS5247 – 26
ams Datasheet: 2014-Jun-20 [v1-02]
A p pl i c at io n I n f o r m at i o n
Figure 36:
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
AS5247 settings
Position of the magnet to
the zero position
Write
Reg(0x0003)=0x01
Write
Reg(0x0003)=0x08
Read
Reg(0x0003)
Reg(0x0003)=0x00
NO
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



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