Datasheet

Section 4 Address Break
Rev. 6.00 Mar. 24, 2006 Page 73 of 412
REJ09B0142-0600
4.3 Usage Notes
When an address break is set to an instruction after a conditional branch instruction, and the
instruction set when the condition of the branch instruction is not satisfied is executed (see figure
4.3), note that an address break interrupt request is not generated. Therefore an address break must
not be set to the instruction after a conditional branch instruction.
0134
Address bus
φ
Address break
interrupt request
0136 102A 0138
[Register setting]
BNE
instruction
prefetch
NOP
instruction
prefetch
MOV
instruction
prefetch
NOP
instruction
prefetch
ABRKCR = H'80
BAR = H'0136
012A MOV.B . . .
: :
0134 BNE
*0136 NOP
0138 NOP
: :
[Program]
Figure 4.3 Operation when Condition is not Satisfied in Branch Instruction