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Renesas M30220TF-PRB Note on Custom Command dbg_reset:, Note on CNVSS:, Note on Boot Mode:

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4.5 Precautions for CPU Rewrite Mode

Here following are precautions and restrictions for debugging the control program for CPU rewrite mode.

IMPORTANT

Note on Custom Command dbg_reset:

•To debug the control program for CPU rewrite mode, you must execute the custom

command dbg_reset once every time you start emulator debugger M3T-PD30.

If you set the MAP setting of addresses E0000h to FFFDFh to "EXT" without

executing dbg_reset, the emulator will run out of control.

Note on CNVSS:

•To debug the control program for CPU rewrite mode, you need to apply 4.5 to 5.5

V voltage to the CNVSS pin.

When the target system is connected:

Set the jumper switch JP1 of the M30220TF-PRB to "CNVSS". The CNVSS is

connected to the target system. Apply 4.5V to 5.5V voltage to the CNVSS pin of the

target system.

When the target system is NOT connected:

Set the jumper switch JP1 of the M30220TF-PRB to "VDD". 5V voltage is applied

from the emulation pod to the CNVSS.

Note on Address E0000h - FFFDFh Memory:

•Table 4.5 shows the areas of memory addresses E0000h to FFFDFh that are enabled

according to the MAP setting and the value of the CPU rewrite mode select bit

(FMCR1).

Table 4.5 Memory addresses E0000h to FFFDFh

Note on Boot Mode:

•Even when the P74 (CE) pin is "H" and the CNVSS pin is "H", boot mode cannot

be selected when the reset is released.

If you want to debug the control program for CPU rewrite mode using operations as

in boot mode, download DE000h to the reset vector area as well as the control

program. If you do not download the reset vector, use script commands, etc., to write

DE000h to the reset vector area.

*1.When both the MAP setting for addresses E0000h to FFFDFh is "INT" and the

FMCR1 is set to "1", both the emulation memory and the MCU's internal flash

memory are enabled and bus collisions can occur. Please avoid combining these

settings.

When both the MAP setting for addresses E0000h to FFFDFh is "EXT" and the

FMCR1 is set to "0", no memory area is enabled and undefined values will be read.

Map setting FMCR1 setting

0

1

0

1

Valid area

Emulation memory

-

No valid area

MCU's internal flash memory

Remarks

Forbidden*1

INT

EXT

Contents

Main ( 2 / 54 ) Preface To use the product properly Precautions for Safety: Contents Page Terminology Page Chapter 1. Precautions for Safety WARNING IMPORTANT CAUTION Note on Final Evaluation: Note on Differences between Actual MCU and Emulator: Note on Clock Supply to the MCU: Notes on NMI* Input: Notes on Interrupts: Notes on DMA Transfer: Notes on Referencing and Setting the Work Area: Note on Reading SFR Area: Note on Instructions that Access the Single-step Interrupt Vector Area: Notes on MAP References and Settings: Note on CPU Rewrite Mode: Page Page Chapter 2. Preparation 2.1 Package Components 2.2 Other Tool Products Required for Development 2.3 System Configuration Page Page Chapter 3. Setting Up 3.1 Switch Settings Note on CNVSS: 3.2 A-D Conversion Bypass Capacitor Note on the Operation of A-D Converter: When Connecting Pod Probe: 3.3 Connecting the M30200T-RPD-E Page Page Page Page 3.5 Procedure for Making an MCU File for M3T-PD30 Page Chapter 4. Debugging Procedure for CPU Rewrite Mode 4.1 Outline of Debugging Procedure 4.2 Using Custom Commands dbg_reset and fmcr1set (1) Custom Command dbg_reset (2) Custom Command fmcr1set Page 4.3 Debugging Procedure (1) Debugging Procedure for CPU Rewrite Mode (Microcomputer Mode) Figure 4.2 Memory map when debugging in microcomputer mode Page (2) Debugging Procedure for CPU Rewrite Mode (Boot Mode) Figure 4.3 Memory map when debugging in boot mode Page 4.4 How to Access Flash Memory Area (1) Using Script Commands (2) Using the Dump Window (3) Using the RAM Monitor Window 4.5 Precautions for CPU Rewrite Mode Note on Custom Command dbg_reset: Note on CNVSS: Note on Boot Mode: Notes on Setting Software Breaks: Note on RESET from the Target System: Note on Setting the CPU Rewrite Mode Select Bit: Note on Address FFFE0h - FFFFFh: Note on Changing the Mode of Flash Memory: Page Page Page Chapter 5. Specifications 5.1 Specifications Table 5.1 lists the specifications of the M30220TF-PRB. Table 5.1 Specifications of the M30220TF-PRB 5.2 External Dimensions Page Page Chapter 6. Troubleshooting 6.1 When the Emulator Debugger Does Not Start Up Properly (1) When the LED Display of PC4701 is Abnormal Table 6.1 LED's abnormal display and its checkpoints See the PC4701 User's Manual. (2) Errors Occur When Starting Up the Emulator Debugger (When the target system is connected) Table 6.2 Checkpoints of errors when starting up the emulator debugger (target is connected) See the user's manuals of the PC4701 and emulator debugger. See the user's manual of the emulator debugger. See "3.3 Connecting the M30200T-RPD-E" (page 21). 6.2 Operation Differs from That of Actual MCUs Page Chapter 7. Maintenance and Guarantee 7.1 Maintenance 7.2 Guarantee 7.3 Repair Provisions 7.4 How to Request for Repair Note on Transporting the Product: