2.
Pin connection when not using subclock
When the subclock is not used, connect pin X
1
to GND and leave pin X
2
open, as shown in
figure 4-9.
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.
Figure 4-10 Pin Connection when Inputting External Clock
Frequency
Subclock (øw)
Duty
45% to 55%
X
1
V
CC
External clock input
X
2
Open
X
X
1
2
GND
Open
92