Current Consumption in Different Power Modes

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 modeDescriptionPeak (mA)
Active (RF working)TXIEEE 802.11b, 1 Mbit/s, @21dBm335
IEEE 802.11g, 54 Mbit/s, @19 dBm285
IEEE 802.11n, HT20, MCS7, @18.5 dBm276
IEEE 802.11n, HT40, MCS7, @18.5 dBm278
RXIEEE 802.11b/g/n, HT2084
IEEE 802.11n, HT2087

Current consumption in other modes is shown in Table 12.4.

Table 12.4. Current consumption in other modes

Work modeDescriptionTypical valueUnit
Modem-sleep1,2CPU working3160 MHz20mA
80 MHz15mA
Deep-sleepRTC timer + RTC memory5μA
Power offCHIP_EN set to low level; chip being powered off1μA

Table notes:

  1. When measuring the power consumption of Modem-sloop mode, the CPU is running and the Cache is idle.

  2. 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.

  3. In Modem-sleep mode, the CPU frequency changes automatically, and the frequency depends on the CPU load and the peripherals used.