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UM0470 Datasheet(PDF) 25 Page - STMicroelectronics |
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UM0470 Datasheet(HTML) 25 Page - STMicroelectronics |
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25 / 37 page  UM0470 Debug module (DM) 25/37 4.10 Step mode The STM8 CPU stall is activated before the instruction execution, in the first decode cycle of the instruction. See Figure 16. Figure 16. STM8 DM step timing Note: When Step mode and Instruction Break on the next instruction mode are both enabled, both the STF and the BKxF flags are set. When you clear the STALL bit, the step function continues its normal operation. t STEP 1st DM DEC1 EXEC1 DEC2 DEC2 DEC2 EXEC2 EXEC2 EXEC2 DEC4 2nd DM break 3rd DM break EXEC4 served/ served/ 1st DM Break served ENABLE 4th DM break served/ CPU Stalled CPU Stalled CPU Stalled CPU Stalled DEC2 DEC3 EXEC2 EXEC3 |
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