The current consumption measurements are taken with a 3.3V supply at 25°C of ambient temperature at the RF port. All transmitters' measurements are based on a 100% duty cycle.
The current consumption depending on RF Modes is shown in Table 12.3.
Table 12.3. Current consumption depending on RF modes
|Work mode||Description||Peak (mA)|
|Active (RF working)||TX||IEEE 802.11b, 1 Mbit/s, @21dBm||335|
|IEEE 802.11g, 54 Mbit/s, @19 dBm||285|
|IEEE 802.11n, HT20, MCS7, @18.5 dBm||276|
|IEEE 802.11n, HT40, MCS7, @18.5 dBm||278|
|RX||IEEE 802.11b/g/n, HT20||84|
|IEEE 802.11n, HT20||87|
Current consumption in other modes is shown in Table 12.4.
Table 12.4. Current consumption in other modes
|Work mode||Description||Typical value||Unit|
|Modem-sleep1,2||CPU working3||160 MHz||20||mA|
|Deep-sleep||RTC timer + RTC memory||5||μA|
|Power off||CHIP_EN set to low level; chip being powered off||1||μA|
When measuring the power consumption of Modem-sloop mode, the CPU is running and the Cache is idle.
In the scenario when Wi-Fi is enabled, the chip switches between Active mode and Modem-sleep mode, and the current consumption will also change between the two modes.
In Modem-sleep mode, the CPU frequency changes automatically, and the frequency depends on the CPU load and the peripherals used.