SimCom SIM800 User Manual

Smart Machine Smart Decision
SIM800_Hardware Design_V1.10 16 2018-08-13
KBR3 41 O
KBR2 42 O
KBR1 43 O
KBR0 44 O
GPIO
GPIO17
11
I/O
Programmable general purpose input
and output.
GPIO19 13 I/O
NETLIGHT 52 O Network status
Can not
multiplex with
GPIO function.
STATUS 66 O Power on status
Serial port
DTR
3
I
Data terminal ready
Keep floating if unused.
RI
4
O
Ring indicator
DCD 5 O Data carrier detect
CTS 7 O Clear to send
RTS 8 I Request to send
TXD 9 O Transmit data
RXD
10
I
Receive data
USB interface
USB_VBUS 24 I
Debug and firmware upgrading Keep floating if unused.
USB_DP
27
I/O
USB_DN 28 I/O
ADC
ADC 25 I
10 bit general analog to digital
converter
Keep floating if unused.
PWM
PWM0 35 O
Pulse-width modulation, multiplex
with GPIO.
Keep floating if unused.
PWM1 36 O
Pulse-width modulation, multiplex
with GPIO.
I2C
SDA 37 I/O I2C serial bus data
Internal pulled up to 2.8V
via 4.7KΩ
SCL
38
O
I2C serial bus clock
SIM interface
SIM_VDD 30 O
Voltage supply for SIM card. Support
1.8V or 3V for SIM card
All signals of SIM
interface should be
protected against ESD with
a TVS diode array.
SIM_DATA 31 I/O SIM data input/output
SIM_CLK 32 O SIM clock
SIM_RST
33
O
SIM reset
SIM_DET 34 I SIM card detection
Antenna
GSM_ANT 60 I/O GSM antenna port
Impendence must be
controlled to 50Ω.

SimCom SIM800 Specifications

General

Brand	SimCom
Model	SIM800
Category	Control Unit
Language	English