CHAPTER 17 OPTION BYTE
Preliminary User’s Manual U16898EJ1V0UD
259
Figure 17-2. Format of Option Byte (2/2)
DEFOSTS1 DEFOSTS0
Oscillation stabilization time on power application or reset input
0 0
2
10
/fx (102.4
µ
s)
0 1
2
12
/fx (409.6
µ
s)
1 0
2
15
/fx (3.27 ms)
1 1
2
17
/fx (13.1 ms)
Caution The setting of this option is valid only when the crystal/ceramic oscillation clock is selected
as the system clock source. No wait time elapses if the high-speed Ring-OSC or external
clock input is selected as the system clock source.
Remarks 1. ( ): f
X
= 10 MHz
2. For the oscillation stabilization time of the resonator, refer to the characteristics of the resonator
to be used.
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