Filter
Top Products
122
CHAPTER 7 RESETS
●
CPU operation detection reset
The CPU operation detection reset is 20-bit counter that the source oscillation is count-locked. If the CL bit
of the low voltage/CPU operation detection reset is not cleared within a specified time after activation, the
reset is generated.
The oscillation stabilization wait time is not required for the CPU operation detection reset.
●
Clock supervisor reset
When the failure of the main clock/subclock is detected, the clock supervisor reset is generated.
The oscillation stabilization wait time is not required for the clock supervisor reset.
Definition of clocks
HCLK: Oscillation clock frequency
MCLK: Main clock frequency
φ: Machine clock (CPU operating clock) frequency
1/φ: Machine cycle (CPU operating clock period)
See "5.1 Clocks", for details.
Note:
When the reset is occurred in the stop mode or sub-clock mode, the oscillation stabilization wait time of
2
15
/HCLK (approx. 8.19 ms, using at HCLK = 4 MHz oscillation) is required.
See "5.6 Oscillation Stabilization Wait Interval" for details.