10.7.2 Write Config Zone

The maximum number of bytes that can be written in each call of the write command is $16, which corresponds to the EEPROM page size. Each data byte within a page must loaded only once. In Anti-Tearing mode, the maximum value for N is $08 for all devices.

If the address provided at P2 is unauthorized, the device will return the "Command Unauthorized" code ($69 $00) after it has received the header. Since access rights vary throughout the Configuration zone, the host may provide an authorized starting address but specify a number of bytes that causes the device to reach unauthorized data. In this case, the device will prevent the internal write cycle, and no bytes will be written to the EEPROM. At the end of the command, the "Command Unauthorized" code ($69 $00) will be returned instead of $90 $00 to indicate that no write cycle occurred.