Renesas Hitachi H8S/2191, Hardware Manual

Page: 260 / 1065

Rev. 2.0, 11/00, page 233 of 1037
10.7.2 External Clock Input
(1) Circuit Configuration
When external clock input connect to the X1 pin, and X2 pin should remain open as
connection example of figure 10.10.
X1
X2 Open
External clock input
Figure 10.10 Connection Example When Inputting External Clock
10.7.3 When Subclock is not Needed
Connect X1 pin to V
CC
, and X2 pin should remain open as shown in figure 10.11.
X1
X2
V
CC
Open
Figure 10.11 Terminal When Subclock is not Needed