Copyright ©2012–2020
， C
hengdu Ebyte Electronic Technology Co., Ltd
8
hengdu Ebyte Electronic Technology Co., Ltd.
EA01-SG UserManual
2.4
PIN DESCRIPTION
Pin Number
Pin Name
I/O
Description
DC Characteristic
NOTE
4
LINK-B
DO
Socket1 connection status
indication
Low level is effective
5
VDD_EXT
PO
3V output power supply
Vnom=3V
80mA max loading
10
DATE
DO
Socket, DATE sending and
receiving indication
Low level is effective
11
LINK-A
DO
The Socket0 connection
status indication
Low level is effective
15
GNSS_ANT
AI
GPS antenna interface
50Ω characteristic impedance
16
SIM_GND
GN
D
USIM, card site
17
1PPS
DO Second pulse output, the user can set
the frequency, duration,
etc
18
SIM_VDD
DO
USIM card power supply
1.8/3V adaptive
10mA max loading
19
SIM_CLK
DO
USIM card clock signal
20
SIM_RST
DO
USIM card has a reset
signal
21
SIM_DATE
IO
USIM card DATE signal
Add a 20K pull-up resistor to
the DATE line
22
TXD_GNSS
DO
GPS serial port TXD
2.8V level compatible
with 3.3V, default
9600bps
23
RXD_GNSS
DI
GPS serial port RXD
29
TXD_DBG
DO
Module debugging serial
port, TXD, reserved
Reserved, recommended
suspension
30
RXD_DBG
DI
Module debugging serial
port, RXD, reserved
33
RXD
DI
Module DATE and at serial
port RXD
3V voltage domain
34
TXD
DO
Module DATE and at serial
port TXD
41
RF_ANT
AI/
AO
RF antenna interface
50Ω characteristic impedance
47
NETLIGHT
DO
Network status indication
Flash indication when park
52
VBKP
PI
RTC auxiliary power supply
input for the GPS
3.0V-4.2V
53
RST/WKUP
DI
Return / wake-up indication,
and the high level is valid
VIL=0V
VIHmin=1.2V
VIHmax=3.6v
The High-Level Signal Is
Regarded As a Wake-Up Signal
When The Pulse Width Is Greater
Than 100us And Less Than 5s.The
Reset Signal Is Considered When
The High-Level Signal Width Is
Greater Than 6 Seconds.(Interior
Pull-Down Resistance)
54
IO_RST
DI
Restore factory parameters
Low level is effective
50,51
VBat
PI
Module main power supply
Vmax=4.2V
Vmin=3.1V
Vnom=3.6V
Power supply shall meet at least
0.6A current
14,27,31,
40,42,44
,45,48,49
GND
GN
D
power ground
3,6,8,9,12
,38,39
RESERVED
-
reserved
Keep Hanging
