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Smart Machine Smart Decision
SIM800H _Hardware Design_V2.03
17
2016-10-10
KBR2
61
O
KBR1
60
O
KBR0
62
O
GPIO
GPIO1
3
I/O
Programmable general purpose input
and output
GPIO2
27
I/O
GPIO3
28
I/O
NETLIGHT
64
O
Network status
STATUS
4
O
Power on status
Serial port
DTR
69
I
Data terminal ready
If these pins are unused,
keep open.
RI
68
O
Ring indicator
DCD
70
O
Data carrier detect
CTS
34
O
Request to send
RTS
33
I
Clear to send
TXD
32
O
Transmit data
RXD
31
I
Receive data
Debug interface
VBUS
7
I
Debug and download
If these pins are unused,
keep open.
USB_DP
59
I/O
USB_DN
19
I/O
ADC
ADC
50
I
10bit general analog to digital
converter
If these pins are unused,
keep open.
PWM
PWM
26
O
Pulse-width modulation
If these pins are unused,
keep open.
I2C
SDA
75
I/O Open drain output
If these pins are unused,
keep open.
SCL
74
O
Open drain output
SIM card interface
SIM_VDD
16
O
Voltage supply for SIM card.
Support 1.8V or 3V SIM card
All signals of SIM interface
should be protected against
ESD with a TVS diode
array.
SIM_DATA
14
I/O SIM data input/output
SIM_CLK
55
O
SIM clock
SIM_RST
15
O
SIM reset
SIM_DET
54
I
SIM card detection
If these pins are unused,
keep open.
Antenna interface
GSM_ANT
40
I/O Connect GSM antenna
BT_ANT
36
I/O Connect Bluetooth antenna
Only SIM800H
FM_ANTP
17
I
Differential antenna for FM
SIMCOM
CONFIDENTIAL
FILE