HD6433802H Datasheet, PDF (106/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

2. Pin connection when not using subclock
When the subclock is not used, connect pin X₁ to GND and leave pin X₂ open, as shown in
figure 4.9.
X₁
GND
X₂
Open
Figure 4.9 Pin Connection when not Using Subclock
3. External clock input
Connect the external clock to the X1 pin and leave the X2 pin open, as shown in figure 4.10.
VCC
X1
X2
Open
External clock input
Frequency
Duty
Figure 4.10 Pin Connection when Inputting External Clock
Subclock (øw)
45% to 55%
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