The LGT8F328P SSOP20 MiniEVB is a compact development board designed as a lowcost, highperformance alternative to the Arduino Pro Mini . Powered by the LGT8F328P microcontroller in an SSOP20 package, this board runs at double the speed of a standard Arduino Nano while offering enhanced features such as a higherresolution ADC, a builtin DAC, and a unique ID (GUID) for each chip . It is fully programmable via the Arduino IDE.
| Parameter | Value |
|---|---|
| Microcontroller | LGT8F328P (SSOP20 package) |
| Clock Speed | 32MHz (internal oscillator) |
| Flash Memory | 32KB |
| SRAM | 2KB |
| EEPROM | 1KB |
| Supply Voltage (5V Pin) | 5V DC |
| Input Voltage (RAW Pin) | 6.5V - 12V DC |
| Current Consumption | ~18mA (via 5V pin) |
| Digital I/O | 9 (max 13 with additional pins) |
| Analog Inputs | 4 channels (12-bit) |
| DAC Output | 1 channel (8-bit) |
| PWM | 5 pins max |
| Interfaces | UART, SPI, I2C |
| Unique ID | Yes (GUID) |
Higher Speed - Runs at 32MHz, over twice the speed of standard Arduino Nano
Enhanced ADC 12bit resolution for more precise analog readings
OnChip DAC 8bit Digitalto-Analog Converter for true analog output
32KB Flash - Plenty of storage for your sketches
Unique GUID Each chip has a builtin unique serial number
Low Power ~18mA current consumption for batteryfriendly projects
Compact Size - 31mm x 18mm form factor fits tight spaces
Wide Voltage Input - 6.5V to 12V via RAW pin for flexible power options
Arduino IDE Compatible - Programmable via Arduino IDE with LGT8F328P core support
The board follows a Pro Mini-style pin arrangement:
| Pin Label | Function | Description |
|---|---|---|
| VCC | 5V | Regulated 5V output |
| RAW | 6.5V-12V | Unregulated input (via onboard regulator) |
| GND | Ground | Ground connection |
| RST | Reset | Active low reset |
| TX | UART Transmit | Serial output |
| RX | UART Receive | Serial input |
| D2-D13 | Digital I/O | General purpose I/O (3,5,6,9,10,11 support PWM) |
| A0-A3 | Analog Input | 12-bit ADC inputs |
| DTR | Auto-Reset | For automatic reset during upload (via capacitor) |
This board requires an external USBtoTTL serial adapter (e.g., FT232RL, CH340, CP2102) for programming .
| 3. Select board | "LGT8F328P" and variant based on your package |
| 4. Select clock speed | 32MHz Internal |
The DTR auto-reset circuit may not function correctly when powered at 5V because the LGT8F328P has a lower reset threshold than ATmega328P . If you experience upload failures, try:
√ Compatible with most Arduino libraries and sketches
√ Direct replacement for Pro Mini in many applications
√ Supports 3.3V and 5V logic systems
√ Built-in internal oscillator for fewer external components
√ Excellent value for embedded projects
The LGT8F328P SSOP20 MiniEVB delivers exceptional performance, advanced features, and excellent value in a compact Pro Minicompatible form factor. Perfect for upgrading existing projects or building costeffective embedded systems.
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