JAJSH44C April 2011 – March 2019 UCD90120A
The Run-Time clock is given in milliseconds and days. Both are 32-bit numbers. This value is saved in nonvolatile memory whenever a STORE_DEFAULT_ALL command is issued. It can also be saved when a power-down condition is detected (see Brownout Function).
The Run-Time clock may also be written. This allows the clock to be periodically corrected by the host. It also allows the clock to be initialized to the actual, absolute time in years (e.g., March 23, 2010). The user must translate the absolute time to days and milliseconds.
The three usage scenarios for the Run-Time Clock are:
The Run-Time clock value is used to timestamp any faults that are logged.