Renesas Single-Chip Microcomputer M32180T2-PTC Informazioni Techniche Scaricare il pdf (Pagina 17)

M3T-PD32RM V.3.01 Release 00 Release Notes

5.12. On the break function using the pre-execution PC break

[Description]

When the pre-execution PC break is used as an event of a breakpoint, the break function may not be

performed properly.

[Conditions]

This problem occurs if the following four conditions are satisfied:

(1) The target MCU belongs to any of the following groups:

32170, 32171, 32172, 32173, 32174, and 32176

(2) The pre-execution PC break is used as an event of a breakpoint.

(3) The pre-execution PC break is used as an event of a chip event.

(4) The breakpoint and the chip event in (2) and (3) above are set at the same address.

[Example]

If the target program is started with a breakpoint being set in the procedure shown below, no

program break occurs when the instruction at the specified address (1000H, for example) is

executed:

(1) Open the Program window and double-click the mouse's left button in the area for setting a

breakpoint at address 1000H. A breakpoint is set at that address. In Single Chip and External

Expansion Modes of the M3217x group, address 1000H is within the internal ROM area, so the

pre-execution PC break is used as a breakpoint and "b"s are displayed in the breakpoint display

area.

(2) Follow these steps in the Trace-point setting window:

1. Click the CE0 button in the Set Chip Event area. The CE0-Set Chip Event dialog box appears.

2. Perform the following in the CE0-Set Chip Event dialog box:

2.1 Check the Enable check box.

2.2 Select "Preexe-PC 0" in the Event Type combo box.

2.3 Type H'1000 in the Address text box.

2.4 Click the OK button.

3. Click the Set button.

[Workaround]

Don't set a breakpoint and a chip event that use the pre-execution PC break as their events at the

same address.

Rev.1.00 10.01.2006 page 15 of 28

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Renesas Single-Chip Microcomputer M32180T2-PTC Informazioni Techniche Pagina 17