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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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External Clock: If external clock input (TMCI) is selected, the timer counter can increment on  
the rising edge, the falling edge, or both edges of the external clock signal. Figure 9.3 shows  
incrementation on both edges of the external clock signal.  
The external clock pulse width must be at least 1.5 system clock (ø) periods for incrementation on  
a single edge, and at least 2.5 system clock periods for incrementation on both edges. The counter  
will not increment correctly if the pulse width is shorter than these values.  
ø
External clock  
source (TMCI)  
TCNT clock  
pulse  
N – 1  
N + 1  
N
TCNT  
Figure 9.3 Count Timing for External Clock Input  
200  
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