Gravitech RS232-ADP User manual
RS232-ADPTM Serial RS-232 Adapter User Manual
Copyright © 2006 MicroResearch
GRAVITECH GROUP WWW.GRAVITECH.US
GRAVITECH.US
uResearch
GRAVITECH GROUP
RS232-ADPTM Serial RS-232 Adapter User Manual
Copyright © 2006 MicroResearch
GRAVITECH GROUP WWW.GRAVITECH.US
This RS232-ADP board is a high-speed
RS232 Serial UART to TTL level
converter module. It is allow you to
connect the serial COM port on your
computer directly to the module. The
module then translates RS232 level to
TTL level on the TXD and RTS lines.
Also, translate TTL level back to RS232
level on RXD and CTS lines.
This board features innovations that set
it apart from other RS232 Adapter
boards. Innovations feature like RXD
and TXD status LEDs. Quick and easy
connect that you can plug directly on to
the breadboard. The board is small and
compact in size 1.50 x 1.25 inches.
The TX and RX pins from the RS232-
ADP can be connected directly to RX
and TX pins of your preferred 5V logic
microcontroller. You only need to supply
5VDC to the board.
The RS232-ADP board is perfect for
embedded systems that require a serial
connection to a computer. The board
attaches directly to the computer COM
port via a serial DB9 cable. The PC
serial port transmits and receives signals
at +/-12V while TTL devices including
microcontroller operate at +5V and
GROUND. In order for you to interface
between the two, you’ll need this
interfacing circuit.
•True RS232 level conversion
•Meets all EIA-232-E and V.28
specifications
•High speed up to 200 KB/S
transmission rate
•Operate from a single 5V supply
•TXD and RXD status LEDs
•Decoupling supply voltage
•Design easy for breadboard
•High quality double sided PCB
•Full hardware handshaking
•All SMT components.
•-40 to +85 °C operating range
•Small and compact in size 1.50 x
1.25 inches.
•Straight 0.1” header pins
•Full access to all DB9 interface
pins
•RS232 communication with your
favorite microcontroller or project
board.
•Data collection from external
measurement instrument.
•Cell phone, PDA, MP3 player and
laptop data transfer.
•Control system from your PC to
electronic board.
•And much more…
Description Features
Applications
RS232-ADPTM Serial RS-232 Adapter User Manual
Copyright © 2006 MicroResearch
GRAVITECH GROUP WWW.GRAVITECH.US
All TTL interface pins are 5V logic level
•TXD: Transmit Data from the
RS232-ADP board. It is a Serial
Output and normally connected to
the RX pin on any microcontroller
or equivalent UART.
•RXD: Receive Data into the
RS232-ADP board. It is a Serial
Input and normally connected to
the TX pin on any microcontroller
or equivalent UART.
•RTS: Request to Send from the
RS232-ADP board. It is an output.
•CTS: Clear to Send into the
RS232-ADP board. It is an input.
All RS232 interface pins are connected directly
to the computer. They are NOT converted.
•CD: Data Carrier Detect –
connected directly to PIN1 on
DB9 connector.
•DTR: Data Terminal Ready –
connected directly to PIN4 on
DB9 connector.
•DSR: Data Set Ready –
connected directly to PIN6 on
DB9 connector.
•RI: Ring Indicator – connected
directly to PIN9 on DB9
connector.
The RS232-ADP board needs an
external 5VDC +/-10% supply.
•+5V: is input 5VDC +/-10% to
RS232-ADP board.
•GND: is a common ground for
every pin. This pin MUST be
connected to ground of the
external power supply.
10-PIN
Header Name DB9 Voltage
Converted
1+5VN/A
2 RXD 2 YES
3 TXD 3 YES
4 GND 5
5 RTS 7 YES
6 CTS 8 YES
7 CD 1 NO
8 DTR 4 NO
9 DSR 6 NO
10 RI 9 NO
Interfaces
TTL:
Power:
Pin Function Description
Summary Table
RS232:
RS232-ADPTM Serial RS-232 Adapter User Manual
Copyright © 2006 MicroResearch
GRAVITECH GROUP WWW.GRAVITECH.US
All of the accessories are available for
purchase via our website. If you don’t
see the item you need, please contract
our sales department at
•SERIAL6-CB
Straight Through 6Ft 9 pin male to
female DSUB connector. 28 Awg
conductors with Tin-plated shell. PVC
wire insulation and Aluminum Mylar foil
shielded. Current rating for up to 1Amp
with dielectric withstanding of 500V AC
(for 1 minute).
Circuit Board Size 1.50” x 1.25”
Mounting Holes Size Ф0.121”
Supply Voltage 5 VDC +/-10%
Accessories
Specifications
RS232-ADPTM Serial RS-232 Adapter User Manual
Copyright © 2006 MicroResearch
GRAVITECH GROUP WWW.GRAVITECH.US
We maintain a website where you can
get information on our products, obtain
literature and download support files.
Visit us online at:
WWW.GRAVITECH.US
Use our online Forum or e-mail your
technical support questions to
[email protected]. We try to
respond to your questions the same day.
For sales questions or to place and
order, direct your e-mails to
[email protected]. Refer to our
website for product pricing, shipping
rates, payment instructions, and for
other info we need to complete your
order.
Disclaimer: MicroResearch reserves the right to modify its products or literature,
or to discontinue any product at any time without prior notice. The customer is
responsible for determining the suitability of any device for any application
developed using MicroResearch components.
Notes
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RS232-ADP
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