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MSM80C154S/83C154S/85C154HVS
44
IDLE MODE
PD & HPD MODE
CPU CONTROL CLOCK
TIMER, S I/O & INTERRUPT
1MΩ
XTAL1
XTAL2
C
C
*
*
MSM80C154S/MSM83C154S
* The capacity of the compensating capacitor depends on the ceramic resonator.
* The XTAL1·2 frequency depends on VCC.
Figure 3-2 Ceramic resonator connection diagram
IDLE MODE
PD & HPD MODE
CPU CONTROL CLOCK
TIMER, S I/O & INTERRUPT
1MΩ
XTAL1
XTAL2
MSM80C154S/MSM83C154S
*CLOCK
74HC04
* Supply of 50% duty clock
Figure 3-3 External clock supply circuit