Renesas Single-Chip Microcomputer M37900T2-RPD-E Informations techniques télécharger pdf (Page 39)

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(2) Errors Occur When Operating the Emulator Debugger

(When the target system is not connected)

Table 5.2 Checkpoints of errors when starting up emulator debugger M3T-PD79 (target is not

connected)

5.2 Operation Differs from That of Actual MCUs

(1) Initializing the Internal Resources of MCU at Power-on

With this product, the internal resources of the MCU are initialized when starting up the emulator.

Therefore, the operation differs from that of actual MCUs.

(2) Oscillator Circuits

Make note of the fact that in the oscillator circuit where a resonator is connected between the XIN and

XOUT pins, oscillation does not occur because a flexible cable, buffer IC and other devices are used

between the emulator MCU and the target system.

(3) When the A-D Conversion Values are Different from Expected Values

The A-D converter characteristics differ from actual MCU characteristics because there are a

converter board and other devices between the MCU and the target system. Make the final evaluation

of the A-D converter with the actual MCU.

(4) When the D-A Conversion Values are Different from Expected Values

The D-A converter characteristics differ from actual MCU characteristics because there are a

converter board and other devices between the MCU and the target system. Make the final evaluation

of the D-A converter with the actual MCU.

Error

Communication ERROR

Data is not sent to the target

Target system is not constructed properly

The version of M3T-PD79 and the firmware

on the target are not same

Target MCU cannot be reset

Flash ROM erase error occurred

Target MCU is uncontrollable

Reset target system

Checkpoint

Check all emulator debugger settings, interface cable

connections and switches on the rear of the PC4701

match.

- See the user's manuals of the PC4701 and emulator

debugger.

(1) Download the proper firmware.

- See the user's manual of the emulator debugger.

(2) Recheck the connection between the PC4701, the

emulation pod and this product.

- See "3.4 Connecting the Emulation Pod Main Unit"

(page 26).

- See user's manual of the M37900T2-RPD-E.

Download the proper firmware.

- See the user's manual of the emulator debugger.

(1) Check your emulator debugger M3T-PD79 is V.2.10

or later.

(2) The flash ROM of the MCU may be worn-out. Contact

your local distributor.

(1) Check the program is not accessing to the unused

area.

(2) Check the switch settings of the pod probe.

- See "3.2 Switch Settings" (page 24).

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Renesas Single-Chip Microcomputer M37900T2-RPD-E Informations techniques Page 39

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