HD6417750RF240V Datasheet, PDF (517/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Table 19.2 Crystal Resonator Characteristics
Frequency (MHz)
R max (Ω)
S
C max (pF)
0
4
8
10
120
80
70
7
7
7
Section 19 Clock Pulse Generator
12
16
20
60
50
40
7
7
7
19.2.2 External Clock Input
Circuit Configuration: An external clock signal can be input as shown in the examples in figure
19.4. If the XTAL pin is left open, ensure that stray capacitance does not exceed 10 pF. When
complementary clock is input to the XTAL pin, the external clock input should be fixed high in
standby mode.
EXTAL
XTAL
External clock input
Open
(a) XTAL pin left open
EXTAL
External clock input
XTAL
(b) Complementary clock input at XTAL pin
Figure 19.4 External Clock Input (Examples)
Rev. 7.00 Sep. 11, 2009 Page 481 of 566
REJ09B0211-0700