SIM800C module GSM GPRS SMS data supports Bluetooth TTS DTMF development board

CZTech SIM800C Module Data Link: http://pan.baidu.com/s/1O78ALMA Password: HWEXSIM800C four -frequency GSM/GPRS development board

SIM800C is a four -frequency GSM/GPRS module that is encapsulated by the castle hole.Its performance is stable, the appearance is small, and the price is high, which can meet the various needs of customers.The operating frequency of SIM800C is GSM/GPRS 850/900/1800/1900MHz, which can be used worldwide. It can be transmitted by voice, SMS and data information at low power, which can be suitable for various compact product design needs.

Product characteristics:
1. The input voltage range is 5V-20V DC. The power supply range is large suitable for various power supply occasions. It is more convenient to use students and engineering projects. The peak current of the GPRS module is large and the voltage is low. ThereforeThe smaller the pressure, the smaller the power supply. When integrated the GPRS module to the product, you need to consider the power circuit of the development board to make the power line as much as possible as much as possible.
2 The module is connected to the power supply automatically to connect to the network. There is no need to control the boot on the button. The power is turned on directly, eliminating the trouble of booting, reserved the booting foot, which can realize the user's own control of the switch;
3. Module TTL with a horizontal conversion circuit, compatible with a variety of single -chip microcomputer serial ports.No need to be converted directly;
4. The audio interface exclusion method is drawn, which is convenient for testing, and the headset and microphone interface are reserved;
5. Support the TTSDTMF function. You can identify the other's keys directly through language broadcasting and call to achieve the function of the 10086 voice table;
6. Bluetooth function, Bluetooth 3.0 protocol, the enhanced version of Bluetooth antenna signal is super strong, support serial port SPP and audio services, etc.;
7. Reserve the BAT interface of lithium battery power supply, you can use lithium battery power supply to facilitate engineering development, 3.7V lithium battery or 18650 lithium battery;

8. Reserve IPEX interface, SMA interface, spring antenna interface, can use different sky for different occasions.

Product pin introduction:
GND: Power Bad
VCC_IN: Power supply to the foot, enter DC5V-20V, for power supply to the board
RI: kernel ringing prompt script
DTR: Data terminal preparation
TXD: The module serial port sends pins, TTL levels (cannot be directly connected to the RS232 level)
RXD: Module serial port receiving pin, TTL level (cannot be directly connected to the RS232 level)
U2_R: Module serial 2 receiving pin
U2_T: Module serial port 2 Send pins
V_M: 5V/3.3V of the kernel voltage of the target control board single chip microcontroller (which is distinguished according to how much the V kernel is the VIC core of its own single -chip machine).
ADC: ADC detection
SPP: kernel audio output pin
SPN: kernel audio output pin
Mc-: kernel audio input pin
Mc+: kernel audio input pin
PWR: Pulling this pin can realize the opening or closing of the module
BAT: Lithium battery input pin, 3.3V-4.4V