R8CSLASH13 datasheet(197/224 Pages) RENESAS

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R8C/13 Group

18. On-chip Debugger

Rev.1.20

Jan 27, 2006

page 186 of 205

REJ09B0111-0120

18. On-chip debugger

The microcomputer has functions to execute the on-chip debugger. Refer to "Appendix 2 Connecting

examples for serial writer and on-chip debugging emulator". Refer to the respective on-chip debugger

manual for the details of the on-chip debugger. Next, here are some explanations for the respective

functions. Debugging the user system which uses these functions is not available. When using the on-

chip debugger, design the system without using these functions in advance. Additionally, the on-chip

debugger uses the address 0C00016 to 0C7FF16 of the flash memory, thus avoid using for the user

system.

18.1 Address match interrupt

The interrupt request is generated right before the arbitrary address instruction is executed. The

debugger break function uses the address match interrupt. Refer to "10.4 Address match interrupt" for

the details of the address match interrupt. Also, avoid setting the address match interrupt (the registers of

AIER, RMAD0, RMAD1 and the fixed vector tables) with using the user system when using the on-chip

debugger.

18.2 Single step interrupt

The interrupt request is generated every time one instruction is executed. The debugger single step

function uses the single step interrupt. The other interrupt is not generated when using the single step

interrupt. The single step interrupt is only for the developed support tool.

18.3 UART1

The UART1 is used for the communication with the debugger (or the personal computer). Refer to "13.

Serial Interface" for the details of UART1. Also, avoid using the UART1 and the functions (P00/AN7 and

P37) which share the UART1 pins.

18.4 BRK instruction

The BRK interrupt request is generated. Refer to "10.1 Interrupt overview" and "R8C/Tiny series soft-

ware manual". Also, avoid using the BRK instruction with using the user system when using the on-chip

debugger.

R8C/13 Datasheet(PDF) 197 Page - Renesas Technology Corp