SIM800C GSM GPRS module 5V3.3V TTL, STM32 C51 program, Bluetooth, TTS

Powerful Core: Driven by the robust SIM800C chip, ensuring reliable performance and compatibility. Bluetooth & TTS Functionality: Enhanced with Bluetooth capabilities and AT command control via the serial port. Universal Connectivity: Features an on-board SIM card slot and supports quad-band frequencies (850/900/1800/1900MHz), making global communication seamless. MCU Compatibility: The built-in 5V/3.3V logic converter circuit ensures compatibility with most MCU breakout boards, integrating both SMS and TTS functionalities. GPRS Standards: Fitted with GPRS multi-slot class 12/10 and GPRS mobile station class B, and fully compliant with GSM phase 2/2+ standards. Efficient Control: Navigate with ease through AT commands (3GPP TS 27.007, 27.005, and enhanced SIMCOM AT Commands). Compact Design: Measures just 30.73 X 26.56mm/1.21 X 1.05inch (L*W), making it a versatile choice for diverse applications. Input & Support: Input: DC5V or lithium battery input VBAT & GND. MCU Level Support: 5V / 3.3V TTL logic compatibility. Antenna Options: Opt for the PCB version or IPEX-SMA via the IPEX antenna interfaces. Pin Configuration SIM800C: Power & Logic: 5V power supply, V_TTL for logic conversion, and GND for grounding. Serial Ports: TXD & RXD pins for sending and receiving serial data, respectively. Audio Pins: SPKP, SPKN, MICN, and MICP for audio input and output. Others: DTR, RI, VRTC, PWX, and VBAT for various functionalities. Note: The item is dispatched with unsoldered pins. Upgrade your projects and applications with the SIM800C GSM GPRS module, and experience a revolution in mobile communication technology.