SIM Tech SIMCom SIM868 Series User Manual

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SIM868_Series_Hardware_Design_V1.06 18 2017-07-13
Serial port
UART1_DTR 6 I Data terminal ready
If these pins are unused,
keep open.
UART1_RI 7 O Ring indicator
UART1_DCD 5 O Data carrier detect
UART1_CTS 4 O Clear to send
UART1_RTS
3
I
Request to send
UART1_TXD 1 O Transmit data
UART1_RXD 2 I Receive data
UART2_TXD 22 O Transmit data
UART2_RXD 23 I Receive data
Debug interface
USB_VBUS
24
I
Debug and download
If these pins are unused,
keep open.
USB_DP 25 I/O
USB_DM 26 I/O
ADC
ADC 38 I
10bit general analog to digital
converter
If it is unused, keep open.
I2C
SDA 64 I/O I2C serial bus data
S
hould be pulled up to 2.8V
via 4.7K resistor externally
SCL 65 O I2C serial bus clock
SIM card interface
SIM1_VDD 18 O
Voltage supply for SIM card.
Support 1.8V or 3V SIM card.
All signals of SIM interface
should be protec
ted against
ESD.
SIM1_DATA 15 I/O SIM data input/output
SIM1_CLK 16 O SIM clock
SIM1_RST 17 O SIM reset
SIM1_DET
14
I
SIM card detection
If it is unused, keep open.
SIM2_VDD 56 O
Voltage supply for SIM card.
Support 1.8V or 3V SIM card
All signals of SIM interface
should be protected against
ESD.
SIM2_DATA 53 I/O SIM data input/output
SIM2_CLK 54 O SIM clock
SIM2_RST
55
O
SIM reset
SIM2_DET
52
I
SIM card detection
If it is unused, keep open.
Antenna interface
GSM_ANT
32
I/O
Connect GSM antenna
If these pins are unused,
keep open.
BT_ANT 20 I/O Connect Bluetooth antenna
GPS_ANT 68 I Connect GNSS antenna
Synchronizing signal of RF
RF_SYNC 29 O Synchronizing signal of RF
SIMCOM CONFIDENTIAL FILE

SIM Tech SIMCom SIM868 Series Specifications

General

Brand	SIM Tech
Model	SIMCom SIM868 Series
Category	GSM/GPRS Modules
Language	English