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(6) Device with which the debugger startup is slowed
When the debugger is started for the first time, chip erasure and writing of debug monitor program are
performed. The following devices require about a dozen seconds for these operations.
V850ES/JG2, V850ES/JJ2
V850ES/HE2, V850ES/HF2, V850ES/HG2, V850ES/HJ2
V850ES/IE2
(7) Writing of debug monitor program
If the CPU operating clock setting is changed by the debugger, the debugger rewrites the debug monitor
program. At this time, it takes about a dozen seconds for this operation. When using NEC Electronics
debugger ID850QB, this specification applies when the setting in the Clock area in the Configuration dialog
box.
(8) Flash self programming
If a space where the debug monitor program is allocated is rewritten by flash self programming, the debugger
can no longer operate normally.
(9) Emulation of POC function
The POC function of the target device cannot be emulated. Make sure that the power to the target system is
not shut down during debugging.
(10) Operation after reset
After an external pin reset or internal reset, the monitor program performs debug initialization processing.
Consequently, the time from reset occurrence until user program execution differs from that in the actual
device operation.
(11) Debugging with real machine running without using MINICUBE2
If debugging is performed with a real machine running, without using MINICUBE2, write the user program
using the QB-Programmer. Programs downloaded by the debugger include the monitor program, and such a
program malfunctions if it is not controlled via MINICUBE2.
(12) Cautions unique to devices
• V850ES/Fx3
Note the following two points when debugging the V850ES/Fx3 as the target microcontroller.
<1> When the MINICUBE2 is connected to the target system via UARTD0, fRH cannot be used as the CPU
clock. The debug monitor program will change the MCM register setting so as to select the main clock
oscillator clock after the reset. If the MCM register setting is changed by the user program, the
debugger operation will become invalid.
<2> When using the pseudo RRM function or the DMM function with the ID850QB, set the result of the
following calculation as the "Multiply rate" in the Configuration dialog box.
Multiply rate = 8 × PLLO × PLLI
Example
3
HOW TO USE MINICUBE2 WITH V850 MICROCONTROLLER
When PLLO = 1/2 and PLLI = 1/2,
Multiply rate = 8 × 1/2 × 1/2 = 2
User's Manual
U18371EJ5V0UM
39
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