Espressif Systems ESP8684 Series, Руководство по проектированию аппаратного обеспечения, Страница: 14 / 28

2 Schematic Checklist
•
4
- output enabled, pull-up resistor enabled (OE = 1, WPU = 1)
•
0*
- input disabled, pull-up resistor enabled (IE = 0, WPU = 0). See details in Notes
•
1*
- When the value of eFuse bit EFUSE_DIS_PAD_JTAG is
0, input enabled, pull-up resistor enabled (IE = 1, WPU = 1)
1, input enabled, in high impedance state (IE = 1)
We recommend pulling high or low GPIO pins in high impedance state to avoid unnecessary power
consumption. You may add pull-up and pull-down resistors in your PCB design referring to Table DC
Characteristics (3.3 V, 25 °C) in ESP8684 Series Datasheet , or enable internal pull-up and pull-down resistors
during software initialization.
Notes
•
R
- These pins have analog functions.
Espressif Systems 14
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ESP8684 Series Hardware Design Guidelines v1.1