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
