參數(shù)資料
型號(hào): μPD789177Y
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
中文描述: 8位單片機(jī)微控制器(8位單片微控制器)
文件頁數(shù): 85/145頁
文件大?。?/td> 610K
代理商: ΜPD789177Y
Preliminary Product Information
84
μ
PD789166Y, 789167Y, 789176Y, 789177Y
Figure 5-39. Format of SMB Status Register 0 (3/3)
STD0
0
1
Clear conditions (STD0 = 0)
Cleared upon detection of stop condition
Cleared at rising edge of 1st clock of byte following
address transmission
Cleared when LREL0 = 1
Cleared when SMBE0 changes from 1 to 0
Cleared by RESET input
Set conditions (STD0 = 1)
Set upon detection of start condition
Start condition detection
Does not detect start condition.
Detects start condition. Indicates that address transmission is in progress.
SPD0
0
1
Clear conditions (SPD0 = 0)
Cleared at rising edge of 1st clock of address transfer
byte following detection of start condition after this bit
has been set
Cleared when SMBE0 changes from 1 to 0
Cleared by RESET input
Stop condition detection
Does not detect stop condition.
Detects stop condition. Transmission by master is completed and bus is released.
Set conditions (SPD0 = 1)
Set upon detection of stop condition
Remark
LREL0 : SMB control register 0 (SMBC0) bit 6
SMBE0: SMB control register 0 (SMBC0) bit 7
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