470
External Controllers
© Tibbo Technology Inc.
EEPROMs (
https://en.wikipedia.org/wiki/EEPROM
) states, the EEPROM "
...has a
limited life for erasing and reprogramming, now reaching a million operations in
modern EEPROMs. In an EEPROM that is frequently reprogrammed while the
computer is in use, the life of the EEPROM is an important design consideration.
"
When planning to use the stor. object, please carefully consider if the planned mode
of EEPROM use will allow the EEPROM to work reliably through the entire projected
life of your product. For more information see
Prolonging and Estimating EEPROM
Like all other flash memory devices on the market, flash ICs used in Tibbo products
only allow for a limited number of write cycles. As the Wikipedia article on flash
memory (
https://en.wikipedia.org/wiki/Flash_memory
) explains, modern flash ICs still
suffer from comparatively low write endurance. In Tibbo devices, this endurance is
around 100'000 write cycles per sector. When you are using the flash memory for
file storage, the fd. object employs sector wear leveling to maximize the life of the
flash IC (but the life still remains limited). If your application employs direct sector
access, then it is your job to plan the application around the life limitations of the
flash memory. For data that changes often, consider using the EEPROM memory
instead. EEPROMs have much better endurance.
Ordering Info and Specifications
Device numbering scheme is as follows:
Visit our online store for the up-to-date list of accessories offered with the DS1206.
Examples of valid model numbers
Model number
Description
DS1206-512K-00
DS1206 device with 512KBytes of flash memory
DS1206-1024K-00
DS1206 device with 1MB of flash memory
Hardware specifications
Ethernet interface
10/100BaseT Ethernet, Auto-MDIX
Serial ports
One RS232 port (DB9M) with 3.5 serial channels
(four inputs and three outputs)
UART capabilities
Baudrates up to 921'600bps;
none/even/odd/mark/space parity and 7/8
bits/character.
Clock frequency
11.0592MHz with PLL off
88.4736MHz with PLL on