R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 151
R0K572030S000BE
Manufacturer Part Number
R0K572030S000BE
Description
KIT DEV FOR SH7203
Manufacturer
Renesas Electronics America
Series
Renesas Starter Kits (RSK)r
Type
MCUr
Specifications of R0K572030S000BE
Contents
CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM
Silicon Manufacturer
Renesas
Kit Contents
Board
Silicon Family Name
SH7203
Silicon Core Number
R5S72030W200FP
Tool / Board Applications
General Purpose MCU, MPU, DSP, DSC
Mcu Supported Families
SH7203
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
SH7203
Lead Free Status / Rohs Status
Compliant
- Current page: 151 of 1686
- Download datasheet (10Mb)
4.6.2
An example of the connection of crystal resonator is shown in figure 4.3.
Place the crystal resonator and capacitors (CL1 and CL2) as close to pins Xin and Xout as
possible. Furthermore, to avoid inductance so that oscillation is correct, use the points where the
capacitors are connected to the crystal resonator in common and do not place wiring patterns close
to these components.
Since the design of the user board is closely connected with the effective characteristics of the
crystal resonator, refer to the example of connection of the crystal resonator that is introduced in
this section and perform thorough evaluation on the user side as well. The rated value of the
crystal resonator will vary with the floating capacitances and so on of the crystal resonator and
mounted circuit, so proceed with decisions on the basis of full discussions with the maker of the
crystal resonator. Ensure that voltages applied to the clock pins do not exceed the maximum rated
values.
Although the feedback resistor is included in this LSI, an external feedback resistor may be
required in some cases. This depends on the characteristics of the crystal resonator.
Set the parameters (of resistors and capacitors) with thorough evaluation on the user side.
4.6.3
In cases where the pins are not in use, fix the level on the Xin pin (pull it up or down, or connect it
to the power-supply or ground level), and leave the Xout pin open state.
In the Case of Using a Crystal Resonator
In the Case of Not Using the Clock Pin
CL1
CL2
Figure 4.3 Example of the Connection of a Crystal Resonator
Crystal
resonator
R
OD
R
OF
Xout
Xin
R
ID
Rev. 3.00 Sep. 28, 2009 Page 119 of 1650
Section 4 Clock Pulse Generator (CPG)
R
IF
This LSI
To internal
sections
REJ09B0313-0300
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