參數(shù)資料
型號: μPD789187
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位單片機微控制器(8位單片微控制器)
文件頁數(shù): 85/146頁
文件大小: 630K
代理商: ΜPD789187
Preliminary Product Information
85
μ
PD789186, 789187, 789196, 789197
Figure 6-39. SMB Status Register 0 Format (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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