Renesas R8C/17 Manual de usuario descargar pdf (Pagina 18)

4. Occupied Area for Monitor Program

Table 1 Occupied Area for Monitor Program

ROM / RAM Occupied Area for Monitor Program

8KB / 512B Vector FFE8h to FFEBh, FFECh to FFEFh,

FFF4h to FFF7h

12KB / 768B RAM 6FFh

Vector FFE8h to FFEBh, FFECh to FFEFh,

FFF4h to FFF7h

16KB / 1KB RAM 6FFh to 7FFh

Flash memory C000h to C7FFh

Vector FFE8h to FFEBh, FFECh to FFEFh,

FFF4h to FFF7h

5. Precautions on Using R8C UART Debugger

5.1. When changing the communication speed and restarting the R8C

UART debugger after the R8C UART debugger ends.

The target MCU holds the baud rate value after the R8C UART debugger ends. Therefore,

when changing the communication speed and restarting the R8C UART debugger, a

communication error occurs. (The R8C UART debugger can be started when using the

previous communication speed). When changing the communication speed, turn off the

target power and turn on the power again.

5.2. ID code of user program

Set the ID code of the user program to all FFh when using the R8C UART debugger.

Table 2 Storing Address of ID Code (R8C/10 Group)

Address ID No. Vector Table

0FFDFh – 0FFDCh ID1 Undefined Instruction

0FFE3h – 0FFE0h ID2 Overflow

0FFE7h – 0FFE4h BRK Instruction

0FFEBh – 0FFE8h ID3 Address Match

0FFEFh – 0FFECh ID4 Single Step

0FFF3h – 0FFF0h ID5 Watchdog Timer,

Oscillation Stop Detection,

Voltage Monitor 2

0FFF7h – 0FFF4h ID6 Address Break

0FFFBh – 0FFF8h ID7 Reserved

0FFFFh – 0FFFCh (NOTES 1) Reset

NOTES

1. Refer to the hardware manual for the value set in 0FFFFh.

5.3. Area in which user program can be downloaded

As shown in Figure 3, a part of RAM or Flash Memory is used for the monitor program when

using the R8C UART debugger. The R8C UART debugger does not download the user

program in the area which overlaps with a monitor program when a user program overlaps

with a monitor program. Note that the R8C UART debugger does not perform an error

output at this time.

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