ESP32-PICO datasheet(38/64 Pages) ESPRESSIF

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5 Electrical Characteristics

5.3

DC Characteristics (3.3 V, 25 °C)

Table 18: DC Characteristics (3.3 V, 25 °C)

Symbol

Parameter

Min

Typ

Max

Unit

CIN

Pin capacitance

—

VIH

High-level input voltage

0.75 × VDD1

—

VDD1 + 0.3

VIL

Low-level input voltage

–0.3

—

0.25 × VDD1

IIH

High-level input current

—

IIL

Low-level input current

—

VOH 4

High-level output voltage

0.8 × VDD1

—

VOL4

Low-level output voltage

—

0.1 × VDD1

IOH

High-level source current

(VDD1 = 3.3 V,

VOH >= 2.64 V,

output drive strength set

to the maximum)

VDD3P3_CPU

power

domain

1, 2

—

VDD3P3_RTC

power

domain

1, 2

—

VDD_SDIO power

domain 1, 3

—

IOL

Low-level sink current

(VDD1 = 3.3 V, VOL = 0.495 V,

output drive strength set to the maximum)

—

RP U

Resistance of internal pull-up resistor

—

kΩ

RP D

Resistance of internal pull-down resistor

—

kΩ

VIL_nRST

Low-level input voltage of CHIP_PU

to power off the chip

—

0.6

1 VDD is the I/O voltage for a particular power domain of pins. For IO’s power domain, please see

ESP32 Series Datasheet > Appendix IO MUX.

2 For VDD3P3_CPU and VDD3P3_RTC power domain, per-pin current sourced in the same domain is

gradually reduced from around 40 mA to around 29 mA, VOH >=2.64 V, as the number of current-

source pins increases.

3 Pins occupied by flash and/or PSRAM in the VDD_SDIO power domain were excluded from the test.

4 V

OH and VOL are measured using high-impedance load.

5.4

Current Consumption Characteristics

5.4.1 Current Consumption in Active Mode

The current consumption measurements are taken with a 3.3 V supply at 25 °C ambient temperature.

TX current consumption is rated at a 100% duty cycle.

RX current consumption is rated when the peripherals are disabled and the CPU idle.

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