UM0853 datasheet(40/56 Pages) STMICROELECTRONICS

40 / 56 page

How to control the RF and I²C channels from your screen

UM0853

40/56

Doc ID 16609 Rev 3

3.3.3

I2C PASSWORD commands

In the I2C PASSWORD area of the I2C User Interface window (see Figure 66), select

Present Password to be able to send an I2C Present Password command. The button at

the bottom right-hand side of the I2C PASSWORD area will indicate Present.

In the same area, select Write Password to be able to send an I2C Write Password

command. The button at the bottom right-hand side of the I2C PASSWORD area will

indicate Write.

I2C Present Password command

To issue an I2C Present Password command, select Present Password and type the I2C

password into the Present Password field.

Figure 86 shows how to launch an I2C Present Password command.

Figure 86.

Issuing an I2C Present Password command

In this example, an I2C Present Password command is sent with the I2C password <AE 45

80 63 >.

I2C Write Password command

To issue an I2C Write Password command, select Write Password and type the I2C

password into the Write Password field.

Figure 87 shows how to launch an I2C Write Password command.

Figure 87.

Issuing an I2C Write Password command

In this example, an I2C Write Password command is sent with the I2C password <54 13 4B

C8 >.

A warning (see Figure 88) was added to prevent unwanted password changes.

UM0853 Datasheet(PDF) 40 Page - STMicroelectronics