94
CHAPTER 5 CLOCK GENERATOR
Preliminary User’s Manual U13420EJ2V0UM00
5.4.2 Subsystem clock oscillator
The subsystem clock oscillator oscillates with a crystal resonator (standard: 32.768 kHz) connected to the XT1
and XT2 pins.
External clocks can be input to the main system clock oscillator. In this case, input a clock signal to the XT1 pin
and an inverted-phase clock signal to the XT2 pin.
Figure 5-5 shows an external circuit of the subsystem clock oscillator.
Figure 5-5. External Circuit of Subsystem Clock Oscillator
(a) Crystal oscillation
(b) External clock
Cautions are listed on the next page.
XT2
XT1
32.768
kHz
XT1
XT2
PD74HCU04
External
clock
µ
V
SS1
IC
Содержание mPD780065 Series
Страница 2: ...Preliminary User s Manual U13420EJ2V0UM00 2 MEMO ...
Страница 10: ...10 Preliminary User s Manual U13420EJ2V0UM00 MEMO ...
Страница 22: ...22 Preliminary User s Manual U13420EJ2V0UM00 MEMO ...
Страница 134: ...134 Preliminary User s Manual U13420EJ2V0UM00 MEMO ...
Страница 154: ...154 Preliminary User s Manual U13420EJ2V0UM00 MEMO ...
Страница 160: ...160 Preliminary User s Manual U13420EJ2V0UM00 MEMO ...
Страница 186: ...186 Preliminary User s Manual U13420EJ2V0UM00 MEMO ...
Страница 326: ...326 Preliminary User s Manual U13420EJ2V0UM00 MEMO ...
Страница 342: ...342 Preliminary User s Manual U13420EJ2V0UM00 MEMO ...
Страница 350: ...350 Preliminary User s Manual U13420EJ2V0UM00 MEMO ...