User's Manual

8
• Digital Part
Processor: FLASH Atmel Micro controller
Programming: Upload and download with a PC through the RS232
serial link and a specific interface (Demo Kit D900).
Program Mem.: 8 Ko of FLASH
Data Memory: 512 bytes of RAM for stack and data
EEPROM Memory: 512 bytes for the HAYES parameters (registers S).
Serial Link: 2400 to 38400 Baud, NRZ format, 5 volts TTL level.
• Power Supply
Supply voltage: 5V monitored (± 5%).
Consumption: Receive Transmit Sleep
<40mA <80mA <5mA
• HAYES Commands:
The user can program all the parameters. A Windows programming software
is supplied "on-line" with documentation support. (See AT commands).
Examples of Hayes commands:
Serial: Serial link rate, parity, bit count, stop bit count, Serial Time-
out, …
Radio: Channels table selection, retry count, …
Mode: Point to Point, Network, Stand-by, etc.
• Performance range
Length of com.: 164 to 328 Feet (50 to 100 meters) in difficult
environment (buildings, reinforced concrete)
984 to 1,312 Feet (300-400 meters) in open
environment (Ground level).
3,281 Feet (1 Km) in view and in height (example:
between buildings)
Obstacles Impact: Walls, trees, obstacles can strongly reduce the
range