Technical data

RTC - MK48Txx Timekeeping Tests
http://www.motorola.com/computer/literature 3-115
3
If the predetermined number of reads are made before the seconds register
changed, the following message is printed:
RTC not running
The RTC time registers are configured for reading. A pre-determined
number of MPU “do nothing” loops are executed. If the seconds register
changes before the full count of MPU loops is executed, the following
message is printed:
RTC did not freeze for reading
If the real-time clock registers fail the data pattern test:
Data Miscompare Error:
Address =________, Expected =________, Actual =________
The following message indicates a programming error and should never be
seen by the diagnostics user:
WARNING -- Real Time Clock NOT compensated for test delay.
3Test Descriptions