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CHAPTER 3 CPU
3.6.1
Reset Factors and Oscillation Stabilization Wait Times
The oscillation stabilization wait state after reset varies depending on the reset factors.
I Reset Factors and Oscillation Stabilization Wait Times
Table 3.6-2 Reset Factors and Oscillation Stabilization Wait Times
Reset Factor
16
Power on reset
2
/HCLK*
watchdog reset
None
Software reset
None
External reset
None
HCLK: Oscillation clock frequency
18
*: MB90V495G requires 2
Figure 3.6-1 MB90895 series oscillation stabilization wait time at generating power-on reset
V
CC
CLK
CPU operation
HCLK: Oscillation clock frequency
98
Parenthesized values are examples calculated at an oscillation clock frequency of 4 MHz.
/HCLK.
15
2
/HCLK
Oscillation
time of oscillator
16
2
/HCLK
Wait time for stabilizing oscillation
Oscillation Stabilization Wait Time
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