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Communication Interface

I²C Communication

Application Note

• PUBLIC

AN000710

• v1-00 • 2020-Jul-21

12

│ 10

2.5

Burn Procedure

After the customer OTP section is burned (finally and irreversible programmed), the AS5715R is fully

Figure 10 :

Programming Flow

START

Write

Reg(0x1c)=0xXX

Reg(0x1d)=0xXX

Reg(0x1e)=0xXX

Reg(0x1f)=0xXX

Write

Reg(0x03)=0x08

Write

Reg(0x1c)=0x00

Reg(0x1d)=0x00

Reg(0x1e)=0x00

Reg(0x1f)=0x00

Write

Reg(0x03)=0x04

Verify content

PASS

Read registers

Check content

Read

Reg(0x1c)

Reg(0x1d)

Reg(0x1e)

Reg(0x1f)

BURN command

Polling BURN bit

LOAD command

Refresh memory with

OTP content

Read Register with OTP

content

Check content

Clear Memory

rma procedure

UNLOCK

command

Write customer

settings

Read

Reg(0x03)

Read

Reg(0x1c)

Reg(0x1d)

Reg(0x1e)

Reg(0x1f)

FAIL

Verify content

FAIL

FAIL

END

END

Correct

programming

and verification.

Wrong

programming.

Reprogramming

not allowed!

Verify content

PASS

Wait

BURN bit = 0

BURN bit = 1

Write

Reg(0x1c)=0x00

Reg(0x1d)=0x00

Reg(0x1e)=0x00

Reg(0x1f)=0x00

Write

Reg(0x03)=0x40

Read

Reg(0x1c)

Reg(0x1d)

Reg(0x1e)

Reg(0x1f)

GLOAD command

Refresh memory with

OTP content

Read Register with OTP

content

Check content

Clear memory

Write

Reg(0x03)=0x01

Write

Reg(0x03)=0x04

Write

Reg(0x03)=0x00

PASS

Software Reset

LOAD command

Refresh memory with

OTP content