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PIC16F877T-20PQ 参数 Datasheet PDF下载

PIC16F877T-20PQ图片预览
型号: PIC16F877T-20PQ
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器\n [8-Bit Microcontroller ]
分类和应用: 微控制器
文件页数/大小: 200 页 / 3338 K
品牌: ETC [ ETC ]
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PIC16F87X  
FIGURE 9-21: BUS COLLISION DURING START CONDITION (SCL = 0)  
SDA = 0, SCL = 1  
TBRG  
TBRG  
SDA  
SCL  
SEN  
Set SEN, enable start  
sequence if SDA = 1, SCL = 1  
SCL = 0 before SDA = 0,  
Bus collision occurs, Set BCLIF.  
SCL = 0 before BRG time out,  
Bus collision occurs, Set BCLIF.  
BCLIF  
Interrupts cleared  
in software.  
S
'0'  
'0'  
'0'  
'0'  
SSPIF  
FIGURE 9-22: BRG RESET DUE TO SDA COLLISION DURING START CONDITION  
SDA = 0, SCL = 1  
Set S  
Set SSPIF  
Less than TBRG  
TBRG  
SDA pulled low by other master.  
Reset BRG and assert SDA  
SDA  
SCL  
s
SCL pulled low after BRG  
Timeout  
SEN  
Set SEN, enable start  
sequence if SDA = 1, SCL = 1  
'0'  
BCLIF  
S
SSPIF  
Interrupts cleared  
in software.  
SDA = 0, SCL = 1  
Set SSPIF  
DS30292B-page 90  
1999 Microchip Technology Inc.  
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