DocID024452 Rev 1

17/24

SEA01

Online digital trimming procedure

In case of a communication error, the content of status register is <11>, which means that

the internal parity flag fail was activated. After a read command is executed, the parity flag

fail is reset and a new command can be executed by the device.

3.5.2

register. It is a write/read command and corresponds to the code given in Table 5.

to 'one'. The device will send to the data bus an 8-bit word where the first two bits are the

as last bit.

In case of a communication error, the content of the status register is <11>, which means

that the internal parity flag fail was activated. After a read command is executed, the parity

flag fail is reset and a new command can be executed by the device.

3.6

Write NVM (OTP)

values and store them permanently.

The presence of two OTP allows the user to repeat the trimming procedure a second time

and change the value previously stored in the device. Please note that when the user starts

the first OTP.

This is virtually a real-time trim-and-test without switching off the supply. It is important that

during the entire process the supply voltage of the IC never falls below its UVLO level,

otherwise, the settings stored in the volatile memory will be lost and the IC will return to the

default setting or the values stored in the first OTP. It is also necessary that the burn

command is executed with Vcc = 19 V with a current capability of 90 mA.

Byte 1

(address, write

type)

Byte 2

command

Byte 3

(address, read

type)

Byte 4

read data

Sr

x

x

Sent by slave (device)

x

x

Sent by master