HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 237

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

8.6
When Using an External Crystal Resonator: 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.
Bypass Capacitors: Insert a laminated ceramic capacitor as a bypass capacitor for each V
and V
with a frequency characteristic suitable for the operating frequency of the LSI, as well as a suitable
capacitance value.
• Digital power supply pairs for internal logic
• Power supply pairs for input and output
• Power supply pairs for PLL
A4-B4, B11-A11, D15-D14, E2-E1, G12-G13, H4-H3, J12-J13, M1-M2, M8-N8, P5-R5
A1-B1, A7-B7, A15-A14, F15-F14, K1-K2, M12-P14, M15-M14, R1-R2, R10-P10
N13-N14, N13-P15
CC
/V
Notes on Board Design
CC
Q pair. Mount the bypass capacitors to the power supply pins, and use components
Avoid crossing
signal lines
EXTAL
Figure 8.2 Points for Attention when Using Crystal Resonator
CL1
This LSI
CL2
XTAL
R
Note : Although the recommended value for CL1 and CL2 is
20pF and the recommended value for R is 0Ω, the
values should be determined after consultation with
the crystal manufacturer.
Rev. 6.00 Jun. 12, 2007 Page 205 of 610
Section 8 Clock Pulse Generator (CPG)
REJ09B0131-0600
SS
/V
SS
Q