Renesas Emulation Probe for M32C/87 Group M30870T-EPB Manuel d'utilisateur télécharger pdf (Page 91)

M30870T-EPB User’s Manual 4. Hardware Specifications

R20UT0209EJ0400 Rev.4.00 Page 91 of 106

Aug 16, 2012

Notes on Clock Supply to an MCU:

Clock can be supplied to the evaluation MCU in one of the following three ways. This is determined by

emulator debugger clock selection.

(1) When Internal is selected:

The clock generated by the oscillation circuit in the PC7501 is supplied to the evaluation MCU.

The clock is continually supplied to the evaluation MCU regardless of "user system clock status"

and "user program execution status".

(2) When External is selected:

The clock oscillating on the user system is supplied to the evaluation MCU. Clock supply to the

evaluation MCU depends on oscillation status (oscillate/off) of the user system.

(3) When Generate is selected:

A clock generated by the dedicated circuit in the PC7501 is supplied to the evaluation MCU. The

clock is continually supplied to the evaluation MCU regardless of "user system clock status" and

"user program execution status".

When operating this product with a sub clock, be sure to set the SW2 and SW3 to XCIN and NC,

respectively.

Notes on Using the CPU Clock at Less than 10 MHz:

To use the CPU clock at less than 10 MHz, execute the command shown below in the Script Window

after starting the emulator debugger.

[Command]

_settimeout ,600

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.

When you use the CPU clock at less than 1 MHz, contact your local distributor.

Notes on Address-Match Interrupt:

Do not single-step an address where an address-match interrupt occurs.

When using an address-match interrupt, do not select the check box of "Enable the Address Match

Interrupt Break Function" in the MCU tab of the Init dialog box. When not using an address-match

interrupt, select the check box.

When you use address-match breaks, if a low reset is input during a user program execution, a debug

monitor program (about 100 cycles) is executed after a reset is released. Take note that it has effects

on the user program execution time and the result of a trace.

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Renesas Emulation Probe for M32C/87 Group M30870T-EPB Manuel d'utilisateur Page 91