Description
Product Overview
The Mini MCU2012 TTL Programmer is a compact, high-performance USB-to-TTL serial adapter designed for programming, debugging, and communicating with microcontrollers and embedded systems. Based on the industry-standard Silicon Labs CP2102 chipset, this miniature module creates a virtual COM port on your computer, allowing seamless communication between your PC and UART-enabled devices such as Arduino Pro Mini, ESP8266, ESP32, STM32, and STC microcontrollers .
What sets the MCU2012 apart is its incredibly compact form factor – measuring just 20mm × 15mm, it is one of the smallest CP2102-based programmers available, making it ideal for space-constrained projects and portable applications . Despite its diminutive size, it retains all essential features including dual 3.3V and 5V power outputs, a self-recovery fuse for short-circuit protection, and full DTR auto-reset support for Arduino-compatible boards .
The module features a Micro USB interface for both power and data connectivity, making it compatible with standard Micro USB cables widely used for Android phones and other devices. The onboard status LEDs provide real-time visual feedback of power and data transmission activity, simplifying troubleshooting and debugging sessions .
This programmer is specifically well-suited for STC microcontroller development, serving as a reliable downloader for STC series chips, while also functioning as a universal serial adapter for a vast range of other UART devices.
Key Features
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Genuine CP2102 Chipset: Based on the original Silicon Labs CP2102 USB 2.0 to UART bridge controller, ensuring stable COM port generation and broad driver compatibility across Windows, macOS, and Linux .
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Ultra-Compact Miniature Design: Extremely small PCB footprint of just 20mm × 15mm, making it perfect for portable projects and integration into tight spaces .
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Micro USB Interface: Features a Micro Mini-USB socket for both power and data connectivity – use standard Micro USB cables you likely already own .
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Dual Power Output (3.3V & 5V): Provides both 3.3V and 5V regulated power outputs (common ground) to supply your target microcontroller or development board .
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High-Speed Communication: Supports baud rates from 300 bps up to 1 Mbps, suitable for fast firmware uploads and real-time data logging .
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Built-in Self-Recovery Fuse: Integrated resettable fuse protects your computer’s USB port and the module from damage in case of accidental short circuits on the target device .
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DTR Signal for Auto-Reset: Includes DTR (Data Terminal Ready) output signal for automatic reset of Arduino Pro Mini and compatible boards during sketch upload – no manual button pressing required .
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Visual Status Indicators: Three onboard LEDs provide clear feedback: POWER (power status), TXD (data transmission), and RXD (data reception) for real-time activity monitoring .
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Wide Communication Format Support: Supports 5, 6, 7, or 8 data bits; 1, 1.5, or 2 stop bits; and odd/even/mark/space/none parity options .
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Industrial Temperature Range: Rated for operation from -40°C to +85°C, suitable for demanding environments .
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Chipset | Silicon Labs CP2102 (Original) |
| Interface | USB 2.0 to TTL UART (Full Speed, 12 Mbps) |
| USB Connector | Micro Mini-USB Socket |
| Operating Voltage | 5V (via USB) |
| Output Voltages | 3.3V & 5V (regulated) |
| Baud Rate Range | 300 bps – 1 Mbps |
| Transmit Buffer | 640 bytes |
| Receive Buffer | 640 bytes |
| Data Format | 5-8 data bits; 1, 1.5, 2 stop bits; multiple parity options |
| Protection | Self-recovery fuse (overcurrent/short-circuit) |
| Pin Header | 6-pin 2.54mm pitch (3.3V, 5V, TXD, RXD, DTR, GND) |
| Supported OS | Windows, macOS, Linux |
| Operating Temperature | -40°C to +85°C |
| Dimensions (L×W) | 20mm × 15mm |
| Weight | Approx. 2g |
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