R0K572011S000BE Renesas Electronics America, R0K572011S000BE Datasheet - Page 117

• Manufacturer Part Number: R0K572011S000BE
• Description: KIT STARTER FOR SH7201
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K572011S000BE

• Contents: CPU Board, LCD Display Module, E8 Emulator, Cable, QuickStart Guide and CD-ROM
• For Use With/related Products: SH7201
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SH7201 Group
4.6
4.6.1
Figure 4.2 is an example of connecting the external clock input. When putting the XTAL pin in
open state, make sure the parasitic capacitance is less than or equal to 10 pF. To stably input the
external clock with enough PLL stabilizing time at power on or releasing the standby, wait longer
than the oscillation stabilizing time.
For details on input conditions of the external clock, see section 29.3.1, Clock Timing.
4.6.2
Place the crystal resonator and capacitors CL1 and CL2 as close to the XTAL and EXTAL pins as
possible. In addition, to minimize induction and thus obtain oscillation at the correct frequency,
the capacitors to be attached to the resonator must be grounded to the same ground. Do not bring
wiring patterns close to these components.
R01UH0026EJ0300 Rev. 3.00
Sep 24, 2010
Notes on Board Design
Note on Inputting External Clock
Note on Using Crystal Resonator
Signal lines prohibited
EXTAL
Figure 4.2 Example of Connecting External Clock
EXTAL
XTAL
CL1
Figure 4.3 Note on Using Crystal Resonator
This LSI
XTAL
CL2
Example of connection with XTAL pin open
Reference value
CL1 = 10 to 22 pF
CL2 = 10 to 22 pF
Note:
Open state
The values for CL1 and CL2
should be determined after
consultation with the crystal
resonator manufacturer.
External clock input
Section 4 Clock Pulse Generator (CPG)
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