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).