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laforge, 11/25/2016 09:04 PM


multi-voltage dual USB UART

This is a CP2105 based dual-port USB UART.

As a very special feature, this device allows you to manually select the UART voltage levels to 1.8, 2.3, 2.5, 2.8, 3.0 or 3.3 Volts.

It is thus ideal for a lab environment, where you frequently need to interconnect with various embedded electronics devices that have UARTs at unusual voltages.

Both UART ports feature RxD/TxD/RTS/CTS signals and have TVS diodes for ESD protection.

Miscellaneous CP2105 GPIOs are available on a separate header

Pictures

Design Files / Schematics / Layour

The EAGLE design files for this open hardware project are available in the osmocom-small-hardware.git repository and can be checked out using
git clone git://git.osmocom.org/osmo-small-hardware.git.

PDF renderings of schematics and component placement are attached below.

schematics rendered as png

Availability

A fully assembled circuit board can be obtained from http://shop.sysmocom.de/products/multi-voltage-usb-dual-uart

Files (7)
mv-uart-front.jpg View mv-uart-front.jpg 68.2 KB laforge, 11/25/2016 04:18 PM
mv-uart-back.jpg View mv-uart-back.jpg 59.9 KB laforge, 11/25/2016 04:18 PM
mv-uart.pdf View mv-uart.pdf 35.2 KB laforge, 11/25/2016 04:19 PM
mv-uart_brd.pdf View mv-uart_brd.pdf 19.9 KB laforge, 11/25/2016 04:19 PM
mv-uart.png View mv-uart.png 179 KB schematics rendered as png laforge, 11/25/2016 09:04 PM
mv-uart-pinout.pdf View mv-uart-pinout.pdf 15.2 KB pinout as PDF file roh, 07/25/2017 10:29 AM
mv-uart-pinout.png View mv-uart-pinout.png 140 KB annotated pin-out roh, 07/25/2017 10:29 AM

Updated by laforge over 7 years ago · 2 revisions

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