Section 3 Oscillator Circuits and Operating Modes
Rev. 2.00 Mar 09, 2006 page 112 of 906
REJ09B0292-0200
3.2.3
Connecting a Crystal Resonator
Connecting a Crystal Resonator:
Figure 3.2 shows an example of crystal resonator connection.
The values of damping resistance R and load capacitances CL1 and CL2 should be decided after
investigating the components in collaboration with the manufacturer of the crystal oscillator to be
used. The crystal resonator should be an AT-cut parallel-oscillator type. Place the crystal resonator
and its load capacitors as close as possible to the XTAL and EXTAL pins.
Other signal lines should be routed away from the oscillator circuit to prevent induction from
interfering with correct oscillation.
High level
Notes: 1. The CKIO pin is an output in clock modes 0,1, and 2. In mode 3, it is high impedance.
2. The values for CL1, CL2, and the damping resistance should be determined after
consultation with the crystal resonator manufacturer.
CL1
R
CKPREQ
/CKM
CKIO
EXTAL
XTAL
Output or high
impedance
CL2
Figure 3.2 Example of Crystal Oscillator Connection
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 ...