How long will data be retained in Cypress Flash memory devices if only a few erase cycles are planned?
The application note, AN98549 - Endurance and Retention Management and Validation, states that if there are cumulative erase cycles of "1,000 cycles and less," the typical data retention goes from 20 to 10 years. Therefore, applications that would require only a few erase cycles can expect data to be retained for 20 years. In general, a few erase cycles should make no difference. The temperature at which you store the product makes a difference. If the temperature is below 55°C, there might not be any issues. Higher temperatures, especially for extended periods would require a computation to be done to ensure the data supports the longevity.