Contec SPT-100A-22TP01, Reference Manual

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Appendix
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SPT-100A22TP01, SPT-100A22TP02 Reference Manual (Hardware)
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7. Life of CFast
About write endurance
CFast contained in product has a write endurance which limits the number of times each memory
may be written, due to the characteristic of the memory that is used. Write endurance can be
calculated by the following formula as a reference value:
CFast (MLC / Q-MLC)
Write endurance (days) =
((Total capacity (KB) / Management page size (KB)) × NAND Flash memory life span (cycles)
/ The number of management page to be rewritten per 1 cycle
Example (Q-MLC):
When the file of 4MB is made for CFS-32GBQ-B, and it rewrites it once per 10 minutes.
Write endurance = ((30,144,000 / 16) × 20,000)/250 = 150,720,000 (cycles)
Life = 150,720,000 / ((60 / 10) × 60 × 24 × 365)
≒
47.7 (years)
After all these are reference values, confirm its life span by the LiveMonitor
The details refer to the manual of the CFast card of the option product.
About LiveMonitor
* For more information, visit the CONTEC's Web site.