Reset SPC56 without clearing RAM ?

Central SUPPORT · ‎2019-03-04

Can I reset the device without losing memory contents at the same time?

NOTE: This question and answer originated from a customer support case which was handled by us. We regularly review support cases and add any helpful ones here for all to benefit from.

Central SUPPORT · ‎2019-03-04

Please note that SRAM must be initialized after power on reset anyway. Because the ECC bits can contain random data after the device is powered on, the SRAM must be initialized by executing 32-bit write operations prior to any read accesses.

As ECC checks are performed during the read portion of an SRAM ECC read/write (R/W) operation, and ECC calculations are performed during the write portion of a R/W operation.

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Central SUPPORT · ‎2019-03-04

Please note that SRAM must be initialized after power on reset anyway. Because the ECC bits can contain random data after the device is powered on, the SRAM must be initialized by executing 32-bit write operations prior to any read accesses.

As ECC checks are performed during the read portion of an SRAM ECC read/write (R/W) operation, and ECC calculations are performed during the write portion of a R/W operation.