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3.1.1 System Status LEDs
The system status LEDs indicate the emulator PC7501's power supply, firmware operating status,
etc. Table 3.1 lists the definition of each system status LED.
Table 3.1 Definition of system status LEDs
Name
ON/OFF
ON
Emulator PC7501 power supply is turned on.
POWER
OFF
Emulator PC7501 power supply is turned off.
ON
The PC7501 system is operating normally.
1. The self-check is under way.
2. Firmware downloaded is written into EEPROM.
SAFE
Blinking
3. If SAFE is lit when ERROR LED is lit or blinking, it means that the
self-check cannot be executed because of the target system operating error.
OFF
The PC7501 system is faulty (system status error).
ON
The PC7501 system is faulty (system status error).
1. Firmware is being downloaded.
ERROR
Blinking
2. If SAFE and ERROR LED are lit at a time or alternately, it means that the
self-check cannot be executed because of a target system operating error.
OFF
The PC7501 system is operating normally.
3.1.2 Target Status LEDs
The target status LEDs typically indicate the target MCU's power supply and operating status.
Table 3.2 lists the definition of each target status LED.
Table 3.2 Definition of target status LEDs
Name
ON/OFF
ON
POWER
OFF
ON
CLOCK
OFF
ON
RESET
OFF
ON
RUN
OFF
WARNING
-
The status of LEDs on the upper panel when the PC7501 emulator system has been started up
normally is shown in Figure 3.2 below. Check this when you actually start up the emulator system.
Figure 3.2 LED display when system has started up normally
Power is supplied to target board.
Power is not supplied to target board.
Target MCU clock is oscillating.
Target MCU clock is not oscillating.
Target MCU is reset.
Target MCU is not reset.
Target program is being executed.
Target program has been halted.
The display varies according to the emulation probe. For the LED display,
refer to the user's manual of each emulation probe.
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Meaning
Meaning
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