Hi frds
I am working on MSP430F2272 MCU in my metering product, and where i using its info memory for saving energy related and calibration parameter of meter. writing is done once every 5 minites.
i tested 100 units of product by putting them in loop circuit for 4 days. every thing working fine except in 5 pieces where info memory get erased completly (B&C both block used in meter but not A block).
after intensive checking i find that it is happened during power on-off-on cycle only and in some pieces only.
as per my knowledge all settings are fine:
1. System frequency is 16 Mhz by DCO. info memory writing is done on [16MHz/49] = 325kHz.
2. All intrrupts are deactivate by _DINT(),
what will be the reason and wht its solution?
Any type of insight will be great help for me.