HD6433308 HITACHI [Hitachi Semiconductor], HD6433308 Datasheet - Page 275

• Manufacturer Part Number: HD6433308
• Description: Hitachi Single-Chip MicroComputer
• Manufacturer: HITACHI [Hitachi Semiconductor]

(2) Input of External Clock Signal
phase clock signal should be input at the XTAL pin, as shown in the example in Figure 16-5.
Frequency
Duty factor
Circuit Configuration: An external clock signal can be input at the EXTAL pin. The reverse-
External Clock Input
Figure 16-4. Notes on Board Design around External Crystal
Double the system clock (Ø) frequency
45% to 55%
Not allowed
Figure 16-5. External Clock Input (Example)
C
C
L2
L1
EXTAL
XTAL
Signal A
74HC04
267
Signal B
External clock input
EXTAL
XTAL
H8/330