What is an NVRAM Supervisor?
NVRAM Supervisors turn standard, Low-Power SRAMs into NVRAMs with control and battery back-up functions at significant cost and space savings. The key NVRAM Supervisory functions are the Battery Switchover circuit and the Write Protect circuit. Battery Switchover: The battery switchover circuit monitors Vcc, and when it falls below the switchover threshold, Vso, switches power to the battery, thereby providing a continuous, uninterrupted supply to the LPSRAM to preserve the data in it.
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