Debugging Note - Renesas QB-RL78I1A User Manual

QB-RL78I1A In-Circuit Emulator

4.2 Debugging Note

- Operation after target system power application
After power application, a program will be executed for the target device mounted in the target system when reset
is released. However, with the QB-RL78I1A, the program does not start until an operation to start execution is
performed after the program is downloaded using the debugger.
- Relation between Standby function and Break function
The break is interrupt function of CPU. The standby mode is released by the break for using the following debug
function.
- Stops execution of the user program.
- Step execution of the standby instruction (Stops user program after execution instruction)
- Pseudo real-time RAM monitor function (Break When Readout)
- Pseudo Dynamic Memory Modification (Break When Write)
- Breakpoint setting executing of the user program.
- Invalid memory access detection function (IAW)
The behavior when detecting an invalid memory access is different between target device and
emulator.
Target device : Reset
IECUBE : Fail-safe break
- Programmable gain amplifier (PGA)
Gain error of programmable gain amplifier (PGA) is
.
- Inverter control pins (TKBO)
The timer pin which controls inverter circuit has a function that sets the timer pin to high impedance during a CPU
stop (open-break function).
The following pins are subject to the open-break function. For the settings of the open-break function, refer to the
Check the user's manual for the debugger that will be used.
Target pins : TKBO00, TKBO01, TKBO10, TKBO11, TKBO20, TKBO21
R20UT0766EJ0200 Rev.2.00
2012.03.30
Table 4-5. Gain error
Gain Target device
± 1 %
4 times
± 1 %
8 times
± 1.5 %
16 times
± 2 %
32 times
different between target device and emulator.
IECUBE
± 1 %
- 6 %
+ 4 % to + 11 %
- 4 % to + 10 %
CHAPTER 4 CAUTIONS
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