Select the Ports category to find the USB-SERIAL CH340 device. If this device is not present in the ports section, view the Other Devices.

Drivers are available which allow FTDI devices to work with the following operating systems: Windows Certified

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FTDI drivers are available for Windows CE 4.2-5.2, 6.0/7.0 and 2013. Support for older versions of Windows Desktop

The parallel IO ports can still be used to display your data in a more convenient way such as 7-segments display as we’ve discussed earlier in this course. Or even the alphanumeric LCDs as we’ll see in the upcoming tutorials. For those who are interested in building their own UI Serial Terminal Application, I’ve also taken this route when I was in the same situation. However, it may be unnecessarily overwhelming at this moment. You can just plan to do it in the future after getting this LAB done & tested with any terminal that works for you. Select “Port” from the on-screen menu. If the CH340 driver is not installed, Arduino IDE won’t allow you to choose COM Ports.Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc). On the other hand, the serial ports provide a convenient way to shift out your data from the RAM to another device that can display it (e.g. Desktop, Laptop, Serial LCDs, etc). And that’s what we’re going to do in this tutorial.

The fact that both TTL and USB are based around a 5 V supply is more due to history, TTL is older and it needed 5 V due to available transistor technology (in the 1960s). D2XX driver: The PC side will be recognized as a USB port and needs to be operated using API functions. Overvoltage and overcurrent, electrostatic reverse connection, harsh environment, electromagnetic interference, and other conditions may cause IC damage:

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Later that 5 V supply was used in almost any computer as computers are made using logic chips which need 5 V, at least the TTL ones. Even as TTL was replaced by CMOS logic large parts of computer electronics still used 5 V even though CMOS could also run on lower voltages. Provide sufficient heat dissipation and temperature control to avoid use under extreme temperature conditions. There are many options to choose from for this part. You can obviously use any serial terminal (e.g. TeraTerm) or even the simple Arduino Serial Monitor or whichever you prefer. Arduino Serial Monitor By taking advantage of USB Bulk Transfer Mode, large data buffers, and automatic flow control, The PL-2303 is capable of achieving higher throughput. When real RS232 signaling is not required, baud rate higher than 115200 bps could be used for even higher performance. The flexible baud rate generator of PL-2303 could be programmed to generate any rate between 75 bps to 12M bps. FT232 UART UART Board is a UART module that converts the USB interface to the TTL level. This module enables data communication by connecting the USB interface of a computer or other device to TTL logic-level devices such as microcontrollers, sensors, etc.

FTDI Chip TTL-232RG-VIP-WE (RS 715-8513) includes voltage reference for setting UART signalling levels The practical LAB of this tutorial is going to be a simple PC-Controlled embedded system. Which means a computer software is involved (for the PC) as long as a firmware code (for the Microcontroller). Computer Software

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Learn here about TTL voltage levels: https://www.allaboutcircuits.com/textbook/digital/chpt-3/logic-signal-voltage-levels/ The PL-2303 chip provides a convenient solution for connecting a UART-like full-duplex asynchronous serial device to any Universal Serial Bus (USB) capable host. The PL-2303 highly compatible drivers could successfully simulate generic COM ports on most operating systems. Learn how to use the USB-TTL Converter module to convert serial data from the PC USB port to TTL UART which is compatible with almost all microcontrollers. Learn how to send/receive serial data to/from the PC from/to the microcontroller. For simulation purposes, you can use the generic Virtual Terminal in Proteus and just type in the data which you wanna send to the microcontroller. It should give you an idea of what will be happening with the USB-TTL module in the real testing phase. And the connection diagram is just the same. Open the MPLAB IDE and create a new project name it “PC_Control_USB-TTL”. If you have some issues doing so, you can always refer to the previous tutorial using the link below.