Endurance of Non-volatile Latches (NVL) in PSoC 3/PSoC 5LP – KBA221079

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How often should I change the data in nonvolatile latches (NVLs) in PSoC 3/5LP?



NVLs in PSoC 3/5LP are used to store important configuration data that will be used to configure the device even before the reset is released. NVL configuration data are not expected to be changed frequently. Compared to the Flash and EEPROM memory in PSoC 3/5LP, NVLs have a much smaller endurance. For example, when programming operation is done at 25 ºC, the NVLs have an endurance value of 100 program/erase cycles.


It is recommended to change the NVL data as infrequently as possible. During device programming, PSoC Programmer ensures that the NVLs are programmed only when there is a difference between the NVL data in the hex file to be programmed and the NVL data already present in the device.