r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 708

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Section 16 Clock Pulse Generator (CPG)
16.5
(1)
Place the crystal resonator and capacitors as close as possible to the EXTAL and XTAL pins. Do
not allow any signal lines to cross the EXTAL or XTAL line to prevent induction from interfering
with correct oscillation.
(2)
Make no connection to the XTAL pin.
Rev. 1.00 Oct. 01, 2007 Page 642 of 1956
REJ09B0256-0100
Notes on Using Crystal Resonator
Notes on Inputting External Clock via EXTAL Pin
Notes on Board Design
Avoid crossing signal lines
Note: The values for CL1, CL2, and the damping resistance should be determined
after consultation with the crystal resonator manufacturer.
Figure 16.2 Notes on Using Crystal Resonator
CL1
EXTAL
Crystal resonator
SH7763
XTAL
R
CL2
Recommended values
CL1 = CL2 = 0-33 pF
R = 0 Ω