N720 OpenLinux
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
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protector should be added.
Table 3-1 VDD_1P8 electrical features
Parameter
Minimum Typical Maximum Remarks
Output Voltage 1.76V
1.8V
1.84V
Temperature range: -40°C ~ +85°C
Output Current
50 mA
Do not use this pin to load any components.
3.2 Control Interfaces
Signal
Pin
I/O
Function
Remarks
RESET_N
32
DI
Module reset input
Reset at low level
PWRKEY_N
33
DI
ON/OFF button
Triggered by low level (recommended)
PWRKEY_P
34
DI
ON/OFF button
Triggered by high level
N720 OpenLinux provides two PWRKEY pins: PWRKEY_N and PWRKEY_P, respectively triggered
by low level and high level. It is recommended to use PWRKEY_N.
3.2.1 PWRKEY_N
N720 OpenLinux allows startup by the following controls:
Button
MCU
The values of R1 and R2 are determined by the IO domain of MCU. The voltage across the base
of the triode should not exceed 1.8V.
Automatic startup after powered up
