Like a standard USB serial adapter, the RLC-3 is connected to your PC via the standard USB connector, and driver software is installed to make it appear as a new serial port; accessable by any PC software which can talk to a com# port. Com port drivers are automatically installed with Windows XP / Vista (Microsoft WHQL certified) and are available for Macintosh OSX, Linux, WinCE, and Windows 2k / 2k3 / 7. A development kit is also available to support direct API communication with the device to reduce PC processor overhead.
TTL compatible input / output: Unlike a standard USB serial adapter, the output lines of the RLC-3 are already converted from the RS232 +/- 12 volt level signals to TTL compatible signal levels, makeing it ideal for communicaitons with microcontrollers like those embedded in ham radios, monitors, and other devices or for your own projects where a PC must "talk" to a microcontroller like the BASIC STAMP, PIC, SX, etc...
Any format: Data formats of 5, 6, 7 and 8 data bits* with 1, 1.5* or 2 stop bits and odd, even, mark, space, or no parity are supported. *at 1M baud, only 7 and 8 data bits are supported *only 5 bit data supported with 1.5 stop bits
Any speed: Baud rate from 300 to 1M (including 300 / 600 / 1200 / 2400 / 4800 / 9600 / 14,400 / 19,200 / 28,800 / 38,400 / 57,600 / 115,200 / 576,000 / 921,600) with a 576 byte recieve buffer and a 640 byte transmit buffer promote fast and smooth data transfer. USB 2.0 compliance provides full speed data transfer on the USB side.
Handshaking: Support for RTS / CTS hardware or X-On/X-OFF.
No power needed: The unit is self powered from the USB port, and can actually supply a small amount of current for a target circuit (26mA at 3.3V).
The RLC-3 is currently in development, and not yet available, but we hope to start shipping these units very soon. We expect the price to be about $25 each, but some variation in that amount is possible.
Also:
Parameter |
Min |
Max |
Units |
|
|---|---|---|---|---|
| Ambient temperature under bias | –55 | 125 | °C | |
| Storage Temperature | –65 | 150 | °C | |
| Voltage on any I/O Pin or RST with respect to GND | –0.3 | 5.8 | Volts | |
| Voltage on VDD with respect to GND | –0.3 | 4.2 | Volts | |
| Maximum Total current through VDD and GND | — | 500 | mA | |
| Maximum output current sunk by RST or any I/O pin | — | 100 | mA | |
| Note: Stresses above those listed here may cause permanent
damage to the device. This is a stress rating only, and functional operation of the devices at or exceeding the conditions in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. |
||||
Parameter |
Conditions |
Min |
Typ |
Max |
Units |
|
|---|---|---|---|---|---|---|
| Supply Voltage | 3.0 | 3.3 | 3.6 | V | ||
| Supply Current1 | Normal Operation; VREG Enabled |
— | 20 | 26 | mA | |
| Supply Current1 | Suspended: VREG Enabled |
— | 80 | 100 | ìA | |
| Supply Current - USB Pull-up2 | — | 200 | 228 | ìA | ||
| Specified Operating Temperature Range | –40 | — | +85 | °C | ||
| Notes: VDD = 3.0 to 3.6 V, –40 to +85 °C unless
otherwise specified. 1. USB Pull-up Current should be added for total supply current. 2. The USB Pull-up supply current values are calculated values based on USB specifications. |
||||||
Parameters |
Conditions |
Min |
Typ |
Max |
UNITS |
|
|---|---|---|---|---|---|---|
| Output High Voltage | IOH = –3 mA IOH = –10 ìA IOH = –10 mA |
VDD – 0.7 VDD – 0.1 — |
— — VDD – 0.8 |
— — — |
V | |
| Output Low Voltage | IOL = 8.5 mA IOL = 10 ìA IOL = 25 mA |
— — — |
— — 1.0 |
0.6 0.1 — |
V | |
| Input High Voltage | 2.0 | — | — | V | ||
| Input Low Voltage | — | — | 0.8 | V | ||
| Input Leakage Current | — | 25 | 50 | ìA | ||
| VDD = 3.0 to 3.6 V, –40 to +85 °C unless otherwise specified. | ||||||
Comments:
Thanks for your interest! Check the top of this page for more information.
Please note that without any way of contacting you, we can't let you know when this new product is available!
Questions:
| file: /Techref/io/serial/RLC3.htm, 25KB, , updated: 2010/7/18 12:23, local time: 2010/7/29 11:23,
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Enter the PICList design contest to win a free PCB from olimex.com! |
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Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232! |
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