Use Instructions

L710HG Hardware Design
16
Table 3-3 Pin Function Description
Power interface
Pin Name Pin No. I/O Description Content
VBAT 25,26,29,30 PI
Power supply voltage,
VBAT=3.4V~4.2V.
The
power supply
for system
Maximum
load current
must
above 2A
. Keep
de-
cap capacitor
close to the this
Net.
USIM_VDD 16 PO
Module LDO output power, single-voltage
1.8V output, Max current 50mA.
On
ly use for
external SIM
Card
VDD.
VDD_1V8 40 PO
Module LDO output power for MCP and
accessories
If not use please
let it open or add
a 10 UF de-
cap
capacitor to
ground.
GND
5,8,11,17,19,2
0,27,28,31,32,
41,45,50,60
-- Ground.
System control interface
Pin Name Pin No. I/O Description Content
PWRKEY 36 DI
System power on/off input, active low.
Long Key to achieve reset function.
FLIGHTMODE 48 DI
The input signal, used to control the
system into flight mode, L: flight mode; H:
normal mode
Interactive interface
Pin Name Pin No. I/O Description Content
NETLIGHT 51 DO Identify the system network status.
STATUS 40 DO
Module status identify: High level power
on, low level power off.
WAKEUP_IN 46 DI AP weak up module
WAKEUP_OUT 47 DO Module wake up AP
SIM interface
Pin Name Pin No. I/O Description Content
UIM_DATA 14 I/O
USIM Card data I/O, which has been
pulled up with a 10KR resistor to
USIM_VDD in module. Do not pull
up or pull down in users’ application
circuit.
All signals of USIM
interface should
be protected with
ESD/EMC.