CHAPTER 4 HOW TO USE MINICUBE2 WITH 78K0 MICROCONTROLLER
User’s Manual U18371EJ1V0UM
79
(2) Using a clock (4, 8, or 16 MHz) generated in MINICUBE2
Remove the oscillator or oscillation circuit on the 78K0-OCD board (System is automatically selected as the
Main Clock in the Configuration dialog box of the debugger).
For the settings, refer to the user
'
s manual for the debugger.
The clock generated in MINICUBE2 can be used only when the X1 and X2 pins are used as the
communication interface. When OCD1A and OCD1B are used as the communication interface, the clock is
supplied from the oscillation circuit connected to the X1 and X2 pins of the target device.
However, for program download at debugger startup, the clock set by the debugger is used.
Therefore, for example, when set to 16 MHz of the System, the time required for download can be shortened
as when set to 4 MHz.
(3) Using a clock mounted on the target system
Remove the oscillator or oscillation circuit on the 78K0-OCD board (System is automatically selected as the
Main Clock in the Configuration dialog box of the debugger).
The clock on the target system can be used only when the OCD1A and OCD1B pins are used as the
communication interface. When the X1 and X2 pins are used as the communication interface, no oscillation
circuits can be connected to the X1 and X2 pins of the device.
However, for program download at debugger startup, the clock set by the debugger is used.
Therefore, for example, when set to 16 MHz of the System, the time required for download can be shortened
as when set to 4 MHz.
(4) Using an internal high-speed oscillator generated in the target device only
The target device operates by an internal high-speed oscillator, regardless of the Main Clock setting in the
Configuration dialog box of the debugger.
However, for program download at debugger startup, the clock set by the debugger is used.
Therefore, for example, when set to 16 MHz of the System, the time required for download can be shortened
as when set to 4 MHz.
