USB

The Universal Serial Bus is a serial bus system for interfacing a PC with other peripherals. It's based on differential data transfer. The bus topology is a strict master-slave communication (Exception: On the Go devices). In the case of EA uniTFTs-Series the PC/Master needs to coordinate the communication. The module has a CDC (Communications Device Class) and is found by Windows PC's as a virtual COM-Port:


Description

Value

Device Class

2

USB Vendor ID

0x2DA9

USB Product ID

0x2454

Device description

EA uniTFT


To program the module, adjust settings or to perform initial tests, we recommend using the USB interface. It's easy to connect, the transfer rate is fast and no interface parameters need to be specified. The driver for Windows can be downloaded on our web-page: http://www.lcd-module.de/fileadmin/downloads/EA_CDCdriver_V5_3.zip


Attention:

A protocol has to be used in USB CDC mode. It's impossible to use the USB interface without a protocol, which means pin 14 (DPROT) must not be set to GND. The high-speed connection of USB leads to buffer overflow, which are prevented by the protocol.