Panasonic MN101L Series

Chapter 11
RTC Time Base Timer (RTC-TBT)
RTC-TBT Operation XI - 9
11.3 RTC-TBT Operation
11.3.1 RTC-TBT Operation
RTC-TBT counts up at the rising edge of SCLK after the internal reset.
T128HZ, T64HZ, T32HZ, T16HZ, T8HZ, T4HZ and T2HZ bits of the TBTR register are used as RTC-TBT inter-
rupt. The interrupt request is generated at the rising edge of each output.
When writing data to the TBTR register, it is cleared and T128HZ, T64HZ, T32HZ, T16HZ, T8HZ, T4HZ,
T2HZ, and T1HZ become "0".
Figure:11.3.1 Output Waveform and clearing time of RTC-TBT
T256HZ
T128HZ
T64HZ
T32HZ
T16HZ
TBTR
Write request
T8HZ
T4HZ
T2HZ
T1HZ