參數(shù)資料
型號: HD404849H
廠商: Hitachi,Ltd.
英文描述: SPLICE
中文描述: 4位單片機(jī)
文件頁數(shù): 85/125頁
文件大小: 471K
代理商: HD404849H
HD404849 Series
85
Transmit Clock Error Detection (In External Clock Mode):
The 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 interrupt request flag (IFS: $023, 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 completion processing is performed and IFS is reset, writing to serial mode
register A (SMRA: $005) changes the state from transfer to STS wait. At this time IFS is set again, and
therefore the error can be detected.
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