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ATMEGA32L-8AUR 参数 Datasheet PDF下载

ATMEGA32L-8AUR图片预览
型号: ATMEGA32L-8AUR
PDF下载: 下载PDF文件 查看货源
内容描述: [RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 8MHz, CMOS, PQFP44, 10 X 10 MM, 1 MM HEIGHT, 0.80 MM PITCH, GREEN, PLASTIC, MS-026ACB, TQFP-44]
分类和应用: 闪存微控制器
文件页数/大小: 347 页 / 3171 K
品牌: ATMEL [ ATMEL ]
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Figure 83. Arbitration between Two Masters  
START  
Master A Loses  
Arbitration, SDAA SDA  
SDA from  
Master A  
SDA from  
Master B  
SDA Line  
Synchronized  
SCL Line  
Note that arbitration is not allowed between:  
A REPEATED START condition and a data bit  
A STOP condition and a data bit  
A REPEATED START and a STOP condition  
It is the user software’s responsibility to ensure that these illegal arbitration conditions  
never occur. This implies that in multi-master systems, all data transfers must use the  
same composition of SLA+R/W and data packets. In other words: All transmissions  
must contain the same number of data packets, otherwise the result of the arbitration is  
undefined.  
174  
ATmega32(L)  
2503J–AVR–10/06  
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