R0K570865S000BE Renesas Electronics America, R0K570865S000BE Datasheet - Page 17

• Manufacturer Part Number: R0K570865S000BE
• Description: KIT STARTER FOR SH7086
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K570865S000BE

• Contents: CPU Board, LCD Display Module, E8 Emulator, Cable, QuickStart Guide and CD-ROM
• For Use With/related Products: SH7086
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 6-9: Clock configuration links below describes the function of the option links associated with Clock configuration. The default
configuration is indicated by BOLD text.
6.7. Oscillator Sources
A crystal oscillator is fitted on the CPU board and used to supply the main clock input to the Renesas microcontroller. The oscillators that
are fitted and alternative footprints provided on this CPU board are detailed in Table 6-10: Oscillators / Resonators
Warning: When replacing the default oscillator with that of another frequency, the debugging monitor will not function unless the following
are corrected:
The user is responsible for code written to support operating speeds other than the default. See the HMON User Manual for details of
making the appropriate modifications in the code to accommodate different operating frequencies.
6.8. Reset Circuit
The CPU Board includes a simple latch circuit that links the mode selection and reset circuit. This provides an easy method for swapping
the device between HMON Boot Mode and User mode. This circuit is not required on customers’ boards as it is intended for providing easy
evaluation of the operating modes of the device on the RSK. Please refer to the hardware manual for more information on the requirements
of the reset circuit.
The reset circuit operates by latching the state of the boot switch (SW1) on pressing the reset button. This control is subsequently used to
modify a port pin state to select which code is executed.
The reset is held in the active state for a fixed period by a pair of resistors and a capacitor. Please check the reset requirements carefully to
ensure the reset circuit on the user’s board meets all the reset timing requirements.
•
•
R74
R75
R76
R77
Reference
FDT programming kernels supplied are rebuilt for the new frequency
The supplied HMON debugging monitor is updated for baud rate register settings.
Clock Oscillator
Clock Oscillator
Clock Oscillator
Clock Oscillator
Function
Connects external clock to MCU
Parallel resistor for crystal
Connects on board clock to MCU
Connects external clock to MCU
Crystal (X1)
Table 6-9: Clock configuration links
Table 6-10: Oscillators / Resonators
Fitted
Fitted
Option Link Settings
Component
10MHz (HC49/4H package)
12
Disconnects external clock connection
to MCU
Not fitted
External Clock Source can be connected.
Disconnects external clock connection
to MCU
Alternative ( Removed )
R77, R76
-
R74, R77
R74, R76
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