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ATMEGA8A-AUR 参数 Datasheet PDF下载

ATMEGA8A-AUR图片预览
型号: ATMEGA8A-AUR
PDF下载: 下载PDF文件 查看货源
内容描述: [RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 16MHz, CMOS, PQFP32, 7 X 7 MM, 1 MM HEIGHT, 0.80 MM PITCH, GREEN, PLASTIC, MS-026ABA, TQFP-32]
分类和应用: 闪存
文件页数/大小: 308 页 / 4674 K
品牌: ATMEL [ ATMEL ]
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ATmega8(L)  
Timer/Counter  
Timing Diagrams  
The Timer/Counter is a synchronous design and the timer clock (clkT0) is therefore shown as a  
clock enable signal in the following figures. The figures include information on when Interrupt  
Flags are set. Figure 28 contains timing data for basic Timer/Counter operation. The figure  
shows the count sequence close to the MAX value.  
Figure 28. Timer/Counter Timing Diagram, No Prescaling  
clkI/O  
clkTn  
(clkI/O/1)  
TCNTn  
TOVn  
MAX - 1  
MAX  
BOTTOM  
BOTTOM + 1  
Figure 29 shows the same timing data, but with the prescaler enabled.  
Figure 29. Timer/Counter Timing Diagram, with Prescaler (fclk_I/O/8)  
clkI/O  
clkTn  
(clkI/O/8)  
TCNTn  
TOVn  
MAX - 1  
MAX  
BOTTOM  
BOTTOM + 1  
71  
2486T–AVR–05/08  
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