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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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9.3  
Operation  
9.3.1  
TCNT Increment Timing  
The timer counter increments on a pulse generated once for each period of the selected (internal or  
external) clock source.  
Internal Clock: Internal clock sources are created from the system clock by a prescaler. The  
counter increments on an internal TCNT clock pulse generated from the falling edge of the  
prescaler output, as shown in figure 9.2. Bits CKS2 to CKS0 of TCR and bits ICKS1 and ICKS0  
of STCR can select one of the six internal clocks.  
ø
Internal  
clock  
TCNT clock  
pulse  
TCNT  
N – 1  
N
N + 1  
Figure 9.2 Count Timing for Internal Clock Input  
199  
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