Data Sheet

Smart Machine Smart Decision
SIM800F_Hardware Design_V1.00 17 2015-07-31
KBC2 49 keypad column 2
KBC3 48 keypad column 3
KBC4 47 keypad column 4
GPIO10 51 GPIO10 Left floating if unused
GPIO11 67 GPIO11
Do not pull up externally;
Left floating if unused
GPIO12 68 GPIO12 Left floating if unused
Serial port
UART1_RXD 10 I Receive data
UART1_TXD 9 O Transmit data
UART1_RTS 8 I Request to send
UART1_CTS 7 O Clear to send
UART1_DCD 5 O Data carrier detect
UART1_RI 4 O Ring indicator
UART1_DTR 3 I Data terminal ready
Left floating if unused
USB interface
USB_VBUS 24 I
USB_DP 27 I/O
USB_DN 28 I/O
For debugging & upgrading firmware Left floating if unused
SIM interface
SIM_VDD 30 O
Voltage supply for SIM card. Support
1.8V or 3V SIM card
SIM_DATA 31 I/O SIM data input/output
SIM_CLK 32 O SIM card clock
SIM_RST 33 O SIM card reset
Should be protected against
ESD with TVS diode
SIM_DET 34 I SIM card detection Left floating if unused
ADC
ADC 25 I Input voltage range: 0V ~ 2.8V Left floating if unused
External reset
NRESET 16 I Reset input(active low)
Recommend connecting a
100nF capacitor
Pulse width modulation( PWM )
PWM1 35 O Pulse-Width Modulation
PWM2 36 O Pulse-Width Modulation
Left floating if unused
RF interface
GSM_ANT 60 I/O GSM antenna
Impendence must be
controlled to 50
BT_ANT 53 I/O Bluetooth antenna
Impendence must be
controlled to 50
Not connect
NC 6 - No connection Do not connect