Cytron UC00A User manual

Cytron USB to UART Converter
UC00A
User’s Manual
V1.1
August 2009
Information contained in this publication regarding device applications and the like is intended through suggestion only and may be
superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty
is given and no liability is assumed by Cytron Technologies Incorporated with respect to the accuracy or use of such information or
infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Cytron Technologies’s products as
critical components in life support systems is not authorized except with express written approval by Cytron Technologies. No licenses are
conveyed, implicitly or otherwise, under any intellectual property rights.

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Product User’s Manual – UC00A
Created by Cytron Technologies Sdn. Bhd. – All Rights Reserved
Index
1. Introduction 1
2. System Overview 3
3. Packing List 4
4. Board Layout 5
5. Product Specification 6
6. Installation 9
a. Software Installation 9
b. Hardware Installation 9
7. Getting Started 10
7.1 Using UC00A with Microcontroller 10
7.2 Using UC00A for Communication between 2 PCs 15
8. Warranty 17

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Product User’s Manual – UC00A
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1
1. INTRODUCTION
Serial communication is most popular interface between device and this applies to
microcontroller and computer. UART is one of those serial interfaces. Classically, most serial
interface from microcontroller to computer is done through serial port (DB9). However, since
computer serial port used RS232 protocol and microcontroller used TTL UART, a level
shifter is needed between these interfaces. Recently, serial port of computer have been phase
out, it have been replaced with USB. Of course most developer chooses USB to serial
converter to obtain virtual serial port. The level shifter is still necessary for UART interface.
Thus, Cytron decided to develop a USB to UART converter which offers USB plug and play,
direct interface with microcontroller and it provide low current 5V supply from USB port.
Traditional Method
(a) PC (Serial Port)
(b) PC (USB)
Using UC00A Method

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This development offer low cost, easy to use USB to UART converter to user.
It has been designed with capabilities and features of:
•Develop low cost USB to UART converter
•Easy to use USB to UART converter, aiming development between computer and
microcontroller, 5V logic.
•USB powered, no external source is required to use this converter
•5V from USB port is available for user.
•Configurable for 5V UART interface.
•Easy to use 4 pin interface: Tx, Rx, Gnd and 5V.
•CTS, RTS, DTR and DSR is pull out to standard 2x5 header pin solder able PCB
pad.
•Plug and Play
•Dimension: 4.6cm x 1.8cm
NOTE: UC00A are compatible for Window XP and Vista and it appear as Virtual COM
port on computer.

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2. SYSTEM OVERVIEW
UC00A
5V MCU
Application
Application
Application
UART
communication
UART
5V
USB Port
Cautions
: “+” on UC00A is 5V supply directly from USB port of computer; it is advised
not to use this power source to power application circuit or device. Wrong connection
such as wrong polarity, wrong voltage, shorted might permanently damage computer.

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3. PACKING LIST
Please check the parts and components according to the packing list. If there are any parts
missing, please contact us at [email protected].my immediately.
1. 1 x UC00A.
2. 1 x 2510 4 ways connector.
3. 4 x 2510 iron pins.
4. USB driver and User’s Manual should be downloaded from Cytron Website.

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4. BOARD LAYOUT
A – USB A type (male). This is for USB connection.
B –USB to UART converter chip.
C – These are a pair of small LED, red and yellow in color. These LEDs are connected to on
board USB to UART converter. It indicates the receiver and transmitter activity. It will only
work if UC00A is connected to PC or laptop through USB cable and microcontroller. Red
LED indicates USB’s transmitter send data, while yellow LED indicate USB’s receiver
receive data
D – 4 ways 2510 header pin for interface to microcontroller. Please refer to hardware
installation for detail connection.
E – 2 x 5 extension pad for extra COM Port Feature.
Label Function
A USB A type (male).
B USB to UART chip.
C Two LED indicators for USB’s transmitter and receiver status.
D 4 ways header pin for interface to microcontroller.
E 2 x5 extension pad for extra COM Port Feature.
A
B
C
D
Cautions
: “+” on UC00A is 5V supply directly from USB port of computer; it is advised
not to use this power source to power application circuit or device. Wrong connection
such as wrong polarity, wrong voltage, shorted might permanently damage computer.
E

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5. PRODUCT SPECIFICATION
UC00A is designed to ease communication between microcontroller and PC. The
specifications are as listed below:
5.1 4 ways 2510 header pin
Pin Label Definition Function
1 + 5V Power output
from UC00A
5V supply from USB, optional for user to power
external device, maximum current 200mA.
2 – Ground or negative Ground of power and signal. This pin should be
connected to device’s GND pin.
3 TX UC00A UART
Transmit pin
This is UC00A’s transmitter pin (5V TTL). It
should be connected to device’s receiver pin.
4 RX UC00A UART
Receive pin
This is UC00A’s receiver pin (5V TTL). It should
be connected to device’s transmitter pin.
Absolute Maximum Rating
Symbol Parameter Min Max Unit
+ Power output pin 5.0 5.0 V
- Operating voltage 0 0 V
TX Transmitter pin of UC00A 0 5.5 V
RX Receiver pin of UC00A 0 5.5 V
Cautions
: “+” on UC00A is 5V supply directly from USB port of computer; it is advised
not to use this power source to power application circuit or device. Wrong connection
such as wrong polarity, wrong voltage, shorted might permanently damage computer.

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5.2 2x5 Extension Pad
Label Definition Function
+ 5V Power output
from UC00A 5V supply from USB, optional for user to power external device, maximum current 200mA.
– Ground or negative Ground of power and signal. This pin should be
connected to device’s GND pin.
TX UC00A UART
Transmit pin This is UC00A’s transmitter pin (5V TTL). It should be connected to device’s receiver pin.
RX UC00A UART
Receive pin This is UC00A’s receiver pin (5V TTL). It should be connected to device’s transmitter pin.
DSR UC00A Data Set
Ready pin This pin is unused under normal UART operation.
DTR UC00A Data
Terminal Ready pin This pin is unused under normal UART operation.
RTS UC00A Request To
Send pin This pin is unused under normal UART operation.
CTS UC00A Clear To
Send pin This pin is unused under normal UART operation.
RI UC00A Ring
Indicator pin This pin is unused under normal UART operation. (This pin is available only for Rev 1.1 UC00A)
DCD
UC00A Data Carrier
Detect pin
This pin is unused under normal UART operation.
(This pin is available only for Rev 1.1 UC00A)
* RI and DCD pin is available only for Rev 1.1 UC00A
Rev 1.0
Rev 1.
1

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Absolute Maximum Rating
Symbol Parameter Min Max Unit
+ Power output pin 5.0 5.0 V
- Operating voltage 0 0 V
RS232 Signals Signal Pins 0 5.5 V
Cautions
: “+” on UC00A is 5V supply directly from USB port of computer; it is advised
not to use this power source to power application circuit or device. Wrong connection
such as wrong polarity, wrong voltage, shorted might permanently damage computer.