Sonic Alert msm83c154s, msm80154s, msm85c154hvs user manual Supply of 50% duty clock, Clock XTAL2

Models: msm83c154s msm85c154hvs msm80154s

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MSM80C154S/83C154S/85C154HVS

IDLE MODE

CPU CONTROL CLOCK

PD & HPD MODE TIMER, S I/O & INTERRUPT

C

XTAL1

 

*

1MΩ

C

XTAL2

 

*

 

 

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

CPU CONTROL CLOCK

PD & HPD MODE TIMER, S I/O & INTERRUPT

 

XTAL1

74HC04

1MΩ

*CLOCK

XTAL2

 

MSM80C154S/MSM83C154S

* Supply of 50% duty clock

Figure 3-3 External clock supply circuit

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Page 51
Image 51
Sonic Alert msm83c154s, msm80154s, msm85c154hvs user manual Supply of 50% duty clock, Clock XTAL2