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HD6433397CP Datasheet(PDF) 85 Page - Renesas Technology Corp |
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HD6433397CP Datasheet(HTML) 85 Page - Renesas Technology Corp |
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85 / 747 page  55 2.6 CPU States 2.6.1 Overview The CPU has three states: the program execution state, exception-handling state, and power-down state. The power-down state is further divided into three modes: sleep mode, software standby mode, and hardware standby mode. Figure 2.11 summarizes these states, and figure 2.12 shows a map of the state transitions. State Program execution state The CPU executes successive program instructions. Exception-handling state A transient state triggered by a reset or interrupt. The CPU executes a hardware sequence that includes loading the program counter from the vector table. Power-down state A state in which some or all of the chip functions are stopped to conserve power. Sleep mode Software standby mode Hardware standby mode Figure 2.11 Operating States |
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