Section 3 Oscillator Circuits and Operating Modes
Rev. 2.00 Mar 09, 2006 page 123 of 906
REJ09B0292-0200
3.2.7
Notes on Board Design
When Using an External Crystal Oscillator:
Place the crystal resonator, capacitors CL1 and
CL2, and damping resistor R close to the EXTAL and XTAL pins. To prevent induction from
interfering with correct oscillation, use a common grounding point for the capacitors connected to
the resonator, and do not locate a wiring pattern near these components.
Note: The values for CL1, CL2, and the damping resistance should be determined after
consultation with the crystal resonator manufacturer.
XTAL
EXTAL
R
CL2
CL1
Avoid crossing
signal lines
Figure 3.5 Points for Attention when Using Crystal Resonator
Bypass Capacitors:
As far as possible, insert a laminated ceramic capacitor of 0.01 to 0.1 µF as a
bypass capacitor for each V
SS
/V
CC
pair. Mount the bypass capacitors as close as possible to the
LSI power supply pins, and use components with a frequency characteristic suitable for the LSI
operating frequency, as well as a suitable capacitance value.
V
SS
/V
CC
pairs
PLL system: 9-12
3 V digital system: 20-18, 26-22, 35-33, 45-42, 52-50, 60-58, 61-67, 69-66, 78-76, 79-81, 91-89,
101-99, 112-109, 113-110, 114-116, 130-132, 149-146, 150-147
5 V digital system: 157-155, 169-167, 181-179, 191-193, 202-200
Содержание SH7616
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Страница 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Страница 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Страница 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Страница 935: ...SH7616 Hardware Manual ...