RTCU NX-900 Technical Manual V1.02
Advanced M2M/IIoT Gateway
Logic IO ApS.
Ph: (+45) 7625 0210
Holmboes Allé 14
Fax: (+45) 7625 0211
8700 Horsens
Page 35 of 45
Denmark
Approved Micro SD cards
To ensure the highest performance and compatibility it is important to use SD-CARDs that have
been approved and tested by Logic IO.
Commercial grade SD-CARDs can be used in applications where the limited write endurance is
acceptable - for example if the SD-CARD is often replaced. Commercial grade SD-CARDs should
not
be used in applications where a potential failure on the media is considered mission critical.
For applications that use the SD-CARD media extensively and where a failure is critical, it is
recommended to use approved
Industrial Grade
SD-CARDs.
Logic IO has approved and recommends industrial grade SD-CARDs from
ATP
that is available in
capacities from 512 MB to 32 GB.
ATP Industrial Grade SD/SDHC Cards are optimized for demanding industrial applications with
consistent performance in all conditions. ATP uses reliable SLC flash technology with a flash
endurance more than 20 times higher than commercial grade products with MLC flash.
The differences in write endurance between commercial grade MLC flash and ATP Industrial
grade SLC flash are quite remarkable for write-intensive applications:
Product Line
Details
Total Writeable Data
Prediction @ 1GB
Time Prediction
@ 500 writes a day (1GB)
ATP Industrial
Grade
SLC Flash
+ Advanced Wear Leveling
80,000GB
or
2,800,000 writes
5,740 days
or
15.7 years
Commercial
Grade
Grade A MLC
(2 bits per cell)
+ Advanced Wear Leveling
4,000GB
or
140,000 writes
280 days
Micro SD-
Card reader