ESP32-PICO datasheet(39/64 Pages) ESPRESSIF

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5 Electrical Characteristics

Table 19: Current Consumption for Wi-Fi (2.4 GHz) in Active Mode

Work Mode

RF Condition

Description

Peak (mA)

Active (RF working)

802.11b, 1 Mbps, DSSS @ 19.5 dBm

370

802.11g, 54 Mbps, OFDM @ 14 dBm

270

802.11n, HT20, MCS7 @ 13 dBm

250

802.11n, HT40, MCS7 @ 13 dBm

205

802.11b/g/n, HT20

113

802.11n, HT40

120

5.4.2

Current Consumption in Other Modes

Table 20: Current Consumption Depending on Work Modes

Work mode

Description

Current consumption (Typ)

Modem-sleep1, 2

The CPU is

powered on3

240 MHz

30-68 mA

160 MHz

27-44 mA

Normal speed: 80 MHz

20-31 mA

Light-sleep

—

0.8 mA

Deep-sleep

The ULP coprocessor is powered on4

150 µA

ULP sensor-monitored pattern5

100 µA @1% duty

RTC timer + RTC memory

10 µA

RTC timer only

5 µA

Power off

CHIP_PU is set to low level, the chip is powered off

1 µA

1 The current consumption figures in Modem-sleep mode are for cases where the CPU is powered on and

the cache idle.

2 When Wi-Fi is enabled, the chip switches between Active and Modem-sleep modes. Therefore, current

consumption changes accordingly.

3 In Modem-sleep mode, the CPU frequency changes automatically. The frequency depends on the CPU

load and the peripherals used.

4 During Deep-sleep, when the ULP coprocessor is powered on, peripherals such as GPIO and RTC I2C are

able to operate.

5 The “ULP sensor-monitored pattern” refers to the mode where the ULP coprocessor or the sensor works

periodically. When ADC works with a duty cycle of 1%, the typical current consumption is 100 µA.

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