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R8C/18 Group, R8C/19 Group
20. Notes on On-chip Debugger
When using on-chip debugger to develop and debug programs for the R8C/18 Group and R8C/19 Group,
take note of the following.
(1) Do not access the related UART1 registers.
(2) Do not use from addresses OC000h address to OC7FFh because the on-chip debugger uses these
addresses.
(3) Do not set the address match interrupt (registers AIER, RMAD0, and RMAD1 and fixed vector
tables) in a user system.
(4) Do not use the BRK instruction in a user system.
(5) A stack pointer of up to 8 bytes is used during user program breaks. Therefore, leave 8 bytes free
for the stack area.
Connecting and using the on-chip debugger has some special restrictions. Refer to the on-chip debugger
manual for on-chip debugger details.
Rev.1.30
Apr 14, 2006
REJ09B0222-0130
Page 228 of 233
20. Notes on On-chip Debugger
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