Espressif ESP01 Quick Start Manual page 9

3 . FUNCTIONAL DESCRIPTION
Power mode Description
Modem-sleep The CPU is powered on.
Light-sleep -
The ULP co-processor is powered on.
Deep-sleep ULP sensor-monitored pattern
RTC timer + RTC memory
Hibernation RTC timer only
Power off CHIP_PU is set to low level, the chip is powered off 0.1 µA
Note:
• When Wi-Fi is enabled, the chip switches between Active and Modem-sleep mode. Therefore, power consumption
changes accordingly.
• In Modem-sleep mode, the CPU frequency changes automatically. The frequency depends on the CPU load and
the peripherals used.
• During Deep-sleep, when the ULP co-processor is powered on, peripherals such as GPIO and I2C are able to
work.
• When the system works in the ULP sensor-monitored pattern, the ULP co-processor works with the ULP sensor
periodically; ADC works with a duty cycle of 1%, so the power consumption is 100 µA.
Power consumption
Max speed 240 MHz: 30 mA ~ 50 mA
Normal speed 80 MHz: 20 mA ~ 25 mA
Slow speed 2 MHz: 2 mA ~ 4 mA
0.8 mA
150 µA
100 µA @1% duty
10 µA
5 µA