Renesas M3062PT2-EPB Manual de usuario descargar pdf (Pagina 91)

M3062PT2-EPB User’s Manual 4. Hardware Specifications

R20UT0211EJ0300 Aug 16, 2012 Page 91 of 104

Rev.3.00

IMPORTANT

Note on Clock Supply to the MCU:

 A clock supplied to the evaluation MCU is selected by the Emulator tab in the Init dialog box of the emulator

debugger.

(1) When "Internal" is selected:

A clock generated by the oscillator circuit board in the PC7501 is supplied. It is continually supplied

regardless of the status of the user system clock and that of the user program execution.

(2) When "External" is selected:

A clock generated by the oscillator in the user system is supplied. It depends on the status of the oscillation

(on/off) of the user system.

(3) When "Generate" is selected:

A clock generated by the dedicated circuit in the PC7501 is supplied. It is continually supplied regardless of

the status of the user system clock and that of the user program execution.

Note on Operating Frequency:

 You can not use this product with a main clock (X

-X

OUT

) less than 1 MHz. To use it with a main clock less

than 1 MHz, contact your local distributor.

Note on TimeOut Setting:

 If you download, execute or single-step a program at a low operating frequency, a communication timeout error

may occur.

Execute the command shown below in the Script Window after starting the emulator debugger.

[Command]

_settimeout 300, 300

Once this command is executed, it remains effective the next time you start the emulator debugger. Therefore,

you do not need to execute this command again.

If the error still occurs in this setting, contact your local distributor.

Note on Stop and Wait Modes:

 Do not single step an instruction shifting to stop or wait mode. It may cause communication errors.

Note on Returning from Stop Mode with the On-chip Oscillator Clock:

 When the evaluation MCU shifts from on-chip oscillator mode or on-chip oscillator low power dissipation

mode to stop mode, it cannot be returned with an interrupt other than the NMI#.

Interrupts with which the evaluation MCU cannot return:

- Key input interrupt

- INT interrupt

- Interrupts of timers A and B

- Serial I/O interrupt

Note on the Watchdog Function:

 If the reset circuit of the user system has a watchdog timer, disable it when using the emulator.

Note on Protect Register:

 The protect is not canceled when bit 2 of protect register PRCR (PRC2), which enables writing into the port P9

direction register and the SI/Oi control register, is changed with the below procedure.

(1) Step execution of an instruction setting PRC2 to "1"

(2) Setting a break point between an instruction setting PRC2 to "1" and a point where the port P9 direction

(3) Setting PRC2 to "1" by the memory window or script window

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