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HD6473434F16 参数 Datasheet PDF下载

HD6473434F16图片预览
型号: HD6473434F16
PDF下载: 下载PDF文件 查看货源
内容描述: 12伏不能应用于S -掩模模型(单电源规格) ,因为这可能会永久损坏设备。 [12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.]
分类和应用: 外围集成电路微控制器可编程只读存储器时钟
文件页数/大小: 752 页 / 2557 K
品牌: HITACHI [ HITACHI SEMICONDUCTOR ]
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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.  
Program execution state  
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.  
Sleep mode  
Power-down state  
A state in which some or  
all of the chip functions are  
stopped to conserve power.  
Software standby mode  
Hardware standby mode  
Figure 2.11 Operating States  
49  
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