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User’s Manual U16580EE3V1UD00
Chapter 8
Clock Generator
The clock generator (CG) generates and controls the internal system clock (f
XX
) that is supplied to each
internal unit, such as the CPU.
8.1 Features
•
Multiplier function using a phase locked loop (PLL) synthesizer (f
XX
= 4
×
f
X
)
- Crystal frequency:
f
X
= 16 MHz
- Internal system clock:
f
XX
= 64 MHz
•
Power saving mode:
HALT mode
8.2 Configuration
Figure 8-1:
Clock Generator
Remark:
f
X
:
External resonator or external clock frequency
f
XX
:
Internal system clock
An external resonator or crystal is connected to X1 and X2 pins, whose frequency is multiplied by the
PLL synthesizer. By this an internal system clock (f
XX
) is generated that is 4 times the frequency (f
X
) of
the external resonator or crystal.
The clock controller enables PLL automatically and starts clock supply to the system after oscillation
stabilization time has passed.
Internal System Clock Frequency
(f
XX
)
External Resonator or Crystal Frequency
(f
X
)
64.000 MHz
16.0000 MHz
X1
X2
f
X
f
XX
CPU
On-chip peripheral I/O
Clock Generator
(CG)
Содержание MuPD70F3187
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Страница 192: ...192 Chapter 5 Memory Access Control Function μPD70F3187 only User s Manual U16580EE3V1UD00 MEMO ...
Страница 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Страница 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
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Страница 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Страница 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
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Страница 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Страница 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
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