參數(shù)資料
型號: HD404639R
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計算機)
中文描述: 4位單片機(4位單片微計算機)
文件頁數(shù): 87/133頁
文件大?。?/td> 803K
代理商: HD404639R
HD404639R Series
87
Transmit Clock Error Detection (In External Clock Mode):
Each serial interface will malfunction if a
spurious pulse caused by external noise conflicts with a normal transmit clock during transfer. A transmit
clock error of this type can be detected as shown in figure 69.
If more than eight transmit clocks are input in transfer state, at the eighth clock including a spurious pulse
by noise, the octal counter reaches 000, the serial 1 interrupt request flag (IFS1: $003, bit 2) is set, and
transmit clock wait state is entered. At the falling edge of the next normal clock signal, the transfer state is
entered. After the transfer is completed and IFS1 is reset, writing to serial mode register 1A (SM1A: $005)
changes the state from transfer to STS wait. At this time serial interface 1 is in the transfer state, and the
serial 1 interrupt request flag is set again, and therefore the error can be detected. The same applies to serial
interface 2.
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相關(guān)代理商/技術(shù)參數(shù)
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HD404639RF 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
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HD404652H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD404652S 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer