Neoway N720 OpenLinux - Page 19

N720 OpenLinux
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
9
GND
1, 14, 17, 20, 26,
30, 31, 44, 49,
74, 75, 77, 91,
93, 95, 97, 98,
99, 100
Ground
Connect all GND
pins to the ground
plane.
Control Interfaces
RESET_N
32
DI
Module reset input
P3
Triggered by low
level to reset the
module.
PWRKEY_N
33
DI
ON/OFF button
(recommended)
P3
Triggered by low
level
Embedded with
diode switch and a
200 kΩ pull-up
resistor
Around 0.8V when
the pin is floating
PWRKEY_P
34
DI
Module ON/OFF control
P3
Triggered by high
level
Embedded a 200
kΩ pull-down
resistor
Connect it to the
ground plane if it is
not used
UART Interface
UART5_TXD
46
DO
UART5 data transmitting
P3
Used for data
transmission.
Leave them
floating if they are
not used.
UART5_RXD
47
DI
UART5 data receiving
P3
USIM interface
USIM1_VCC
35
PO
USIM1 power output
P1 I
max
=50mA
The module is
compatible with
1.8V and 2.85V
USIM cards.
Connect DATA pin
to USIM_VCC
through a 10 kΩ
pull-up resistor.
Leave them
USIM1_DATA
36
IO
USIM data IO
P1
USIM1_CLK
37
DO
USIM1 clock output
P1
USIM1_RESET
38
DO
USIM1 reset
P1
USIM1_DET
39
DI
USIM1 detect
P3