7.2.1 Description of Device States

The ATWINC15x0B has several device states:

  • ON_Transmit – Device is actively transmitting an 802.11 signal with highest output power and nominal current consumption
  • ON_Receive – Device is actively receiving an 802.11 signal with lowest sensitivity and nominal current consumption
  • ON_Doze – Device is ON but is neither transmitting nor receiving
  • Power_Down – Device core supply off (leakage)
  • IDLE connect – Device is connected with one DTIM beacon interval
The following pins are used to switch between the ON and Power_Down states:
  • CHIP_EN – Device pin (pin 23) used to enable DC/DC Converter
  • VDDIO – I/O supply voltage from external supply

In the ON states, VDDIO is ON and CHIP_EN is high (at VDDIO voltage level). To switch between the ON states and Power_Down state CHIP_EN has to change between high and low (GND) voltage. When VDDIO is OFF and CHIP_EN is low, the chip is powered off with no leakage (for more information, refer to Restrictions for Power States).