Renesas Technology, Tools FAQs
Last Updated: April 20, 2000
Document Number: 01051304_e
Q.
I applied a reset from the target system in the emulator but the program did not work properly. Are there any differences between
the emulator reset and the actual chip (Mask version MCU) reset? And, are there any differences when executing a reset from the
emulator debugger PD30?
A.
Difference between the actual chip reset and the emulator reset
In the emulation pod M30620T/TB-RPD-E, a reset input made in the target board goes into the gate array. Then, the gate
array chip generates the reset to the MCU. If the reset signal transition of the target system is too long, the gate array chip in
the M30620T/TB-RPD-E pod behaves strangely around the I/O threshold voltage of the gate array chip. Therefore, the reset
input transition time (0.2 Vcc to 0.8 Vcc) of the target system must be held within 1 micro sec. There is no such restriction for
the actual chip.
1.
Difference between target system reset and PD30 Debugger reset
A reset from PD30 is only possible during the user program stop state. On the other hand, a reset from target system is only
possible during the user program execution state.
2.
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