SIM800C mini Development Board for 2G applications

Description

The SIM800C Mini DB is a compact and portable board designed specifically for breadboard. The main equipped modules are the SIM800C Mini DB series wireless communication modules. The SIM800C EVB (Evaluation Board) exposes the SIM800C Quad-Band GSM/GPRS LCC module on a user-friendly breakout platform. It keeps the module’s compact LCC form factor while adding convenient connectors, power regulation, and test points so you can prototype and evaluate cellular functionality quickly without low-level PCB layout or soldering.

Features

• Compatible with BreadBoard
• On Board 2A Switching Regulator
• On Board NanoSIM(4FF) socket
• BT Antenna on board
• GNSS active antenna circuit
• Quad-band GSM/GPRS support with up to 85.6 kbps GPRS data transfer
• Abundant interfaces: UART, USB 2.0, GPIO for easy host connection and control
• Ready-to-use EVB power management, antenna connector, and level-shifted I/O
• header pins for monitoring signals and integrating peripherals
• Compact evaluation form factor that preserves the SIM800C LCC footprint for later product development

Specifications

• Module type: SIM800C in LCC package
• Network: Quad-band GSM (GPRS up to 85.6 kbps)
• Interfaces: UART, USB 2.0, multiple GPIO pins
• Expansion: Breakout headers for debugging and interfacing with external sensors or microcontrollers
• Typical use: Designed to mirror final-module connections so results transfer to production hardware

Applications

• Smart meters and metering gateways
• Security systems and alarm communication
• Remote diagnostics and telemetry
• IoT devices requiring low-bandwidth cellular connectivity

Development Board Configuration

The detailed assignment of the peripheral interfaces on the Development board is as follows:

The Development board has 2 functional indication LEDs, as follows:

• D1: NETLIGHT
• D2: Power indication LED

Components

PinOut

Pin Describtion

VRTC pin voltage: VImax=3.3V, VImin=1.5V, VInorm=2.8V
VOmax=3V, VOmin=2V, VOnorm=2.8V IOmax=2mA Iin≈10uA

Hint: make sure the power supply voltage is stable. The board to power up and turn on automatically without the need for a turn-off function.

Dimentions

Benefits of the EVB for Design

Using the SIM800C EVB accelerates development and reduces risk by letting you test cellular functions immediately without designing a module-level PCB. The EVB simplifies integration, saves development time, and helps validate power, signaling, and antenna choices before committing to a final hardware design.

Downloads

• SIM800 MINI DB schematic
• SIM800C_SPEC