This is a small handy module for rapid prototyping projects requiring RS232/PC interface to robotics and microcontroller based projects using 3.3V or 5V TTL logic. This module converts signals between RS232 voltage levels and TTL voltage levels.
Features:
- High-Speed Communication: Supports data transfer speeds up to 115kbps or higher in short bursts for quick, reliable communication.
- SMD MAX3232 Device: Built-in MAX3232 device offers high-speed, efficient signal conversion between RS232 and TTL logic levels.
- Selectable Signal Levels: Allows selection of +3.3V or +5V TTL signal levels via a header for easy adaptation to different systems.
- Status LED (D1): Indicates the operational status of the module for convenient monitoring.
- Microcontroller Compatibility: Works with a wide range of microcontrollers like Microchip PIC, Atmel AVR, STM32, Renesas MCU, NXP MCU, and more.
- Versatile Applications: Used in various fields such as radio modification, XBOX360 flash, vehicle detection, phone flash, GPS, and hard disk repair.
- Easy Integration: Designed for simple use with PCs, laptops, and UART-compatible microcontrollers.
Specifications:
| Attribute |
Value |
| Working Voltage |
3.3V to 5.5V |
| PCB Size |
32mm x 28mm |
| Signal Conversion Device |
Built-in SMD MAX3232 |
| Data Transfer Rate |
Up to 115kbps or higher in short bursts |
| TTL Signal Levels |
Selectable +3.3V or +5V |
| Port Interface |
TX, RX, VCC, GND |
| Status LED |
Yes (D1) |
| Microcontroller Compatibility |
Microchip PIC, Atmel AVR, STM32, etc. |
| Applications |
Radio mods, XBOX360 flash, GPS, etc. |
TTL Connections Pinout for RS232-TTL Converter:
| Pin |
Function |
Description |
| Pin 1 |
VCC (+) |
Requires 3.3V (or 5V for 5V TTL logic targets) to power the board. |
| Pin 2 |
RX (MAX3232 ROUT1) |
TTL output, typically connected to the RX pin of a microcontroller’s UART. |
| Pin 3 |
TX (MAX3232 DIN1) |
TTL input, usually connected to the TX pin of a microcontroller’s UART. |
| Pin 4 |
GND |
Ground pin, connected to the 0V rail of the application hardware. |
Document:
Data sheet
ASCII_serial_port_crib_sheets
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