4.2.1.1 Device is Asleep

When the device is asleep, it ignores all but the Wake condition. The Wake condition is as follows:

  • Send Start condition
  • Send Device Address
  • Expect NACK
  • Send Stop condition
The ECC204-TFLXAUTH will only exit Low-Power mode if the device address sent by the system microprocessor contains a client address that matches the address stored in the Config: Device_Address byte. The ECC204-TFLXAUTH will NACK the device address and ignore all subsequent bytes until tPU expires.