4D SYSTEMS µUSB-MB5 User Manual

Pin Name Description

1 DTR Data Terminal Ready output (active low)
2 TX Serial Data output (uUSB Transmit)
3 RX Serial Data input (uUSB Receive)
4 RTS Ready to Send output (active low)
5 CTS Clear To Send input (active low)
6 GND Ground
7 SUSPEND USB Suspend State (active high)
8 GND Ground
9 5V 5V Power from USB (upto 500mA)

10 3.3V 3.3V Power regulated (upto 100mA)

Product Overview:

The microUSB (µUSB-MB5) is a USB to RS-232 bridge converter which is simple,
cost effective, very small and easy to use. It uses a mini-B type USB connector to
connect to your PC and is based on the CP2102 Bridge from Silicon Labs. It
provides the user with multi baud rate serial data and access to flow control signals
in a convenient 10 pin 0.1” pitch Dual-In-Line package. The µUSB-MB5 is ideal for
prototype or production.

Main Features:

USB 2.0 compliant Full Speed 12Mbps maximum speed; Suspend supported
Hardware or Xon/Xoff handshaking supported; 300bps to 1Mbps
UART supports 5-8 bit data, 1-2 Stop bits, odd/even and no parity
Integrated EEPROM for Vendor ID, product ID, serial number, release number
On-chip 3.3V regulator available; power on reset circuit
Virtual COM port drivers allow operation with existing COM port PC applications
Supports Windows, MAC (OSX-9 and above) and Linux (2.4 kernel and above)
Self powered or USB powered; -40 to +85 deg C temp range
Small size; 15.4mm x 17.7mm (0.5” x 0.5”) approx.
Traffic/Operation LED indicates board status

figure 2: typical interface with a microcontroller

figure 1: uUSB-MB5 Pin-Out Diagram

figure 3: Interface to any
4D serial device such as the
uLCD-OLED and uVGA
modules with the extra 5pin
header provided.

For Help and Other Information:

Assistance with latest driver downloads go
to www.silabs.com or visit the µUSB-MB5
product web-page of your distributor.

Questions and technical support please
email [e-mail]

4D Systems Pty. Ltd. [e-mail] www.4dsystems.com.au

Typical Applications:

The microUSB (µUSB-MB5) makes an easy USB-Serial interface, so you can
easily create USB to RS-232 converters , USB to RS-422/RS-485 converters ,
upgrade legacy RS232 devices, make PDA and cellphone USB interface
cables, barcode readers, POS terminals, etc.

In any application, make sure the TX and RX lines from the µUSB are
crossed over to the attached peripheral. That is, the TX from the µUSB
connects to the RX of the target and the RX from the µUSB connects to the
TX of the target device.

Note: the TX and RX signal levels are between 0.0 Volts and 3.3 Volts.