HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 495

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

17.2.2
Circuit Configuration: An external clock signal can be input as shown in the examples in figure
17.5. If the XTAL pin is left open, the stray capacitance should not exceed 10 pF. If the stray
capacitance at the XTAL pin exceeds 10 pF in configuration a, use the connection shown in
configuration b instead, and hold the external clock high in standby mode.
External Clock Input
Figure 17.4 Oscillator Circuit Block Board Design Precautions
Avoid
C
C
EXTAL
XTAL
EXTAL
XTAL
L2
L1
Figure 17.5 External Clock Input (Examples)
b. Complementary clock input at XTAL pin
a. XTAL pin left open
Signal A
Open
Signal B
Rev.4.00 Aug. 20, 2007 Page 451 of 638
XTAL
EXTAL
External clock input
External clock input
17. Clock Pulse Generator
H8/3008
REJ09B0395-0400