參數(shù)資料
型號(hào): M30240S9-XXXFP
廠商: Mitsubishi Electric Corporation
英文描述: 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
中文描述: 單片16位CMOS微機(jī)
文件頁數(shù): 102/142頁
文件大?。?/td> 1637K
代理商: M30240S9-XXXFP
1-102
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
UART0 through UART2
2.23.2.3 TxD, RxD I/O polarity reverse function (UART2)
This function is to reverse TxD pin output and RxD pin input. The level of any data to be input or output (in-
cluding the start bit, stop bit(s), and parity bit) is reversed. Set this function to “0” (not to reverse) for usual use.
2.23.2.4 Bus collision detection function (UART2)
This function is to sample the output level of the TxD pin and the input level of the RxD pin at the rising edge
of the transfer clock; if their values are different, then an interrupt request occurs. Figure 1.92 shows the ex-
ample of detection timing of a buss collision (in UART mode).
Figure 1.92: Detection timing of a bus collision (in UART mode)
ST : Start bit
SP : Stop bit
ST
ST
SP
SP
Transfer clock
TxD
2
RxD
2
Bus collision detection
interrupt request signal
“H”
“L”
“H”
“L”
“H”
“L”
“1”
“0”
Bus collision detection
interrupt request bit
“1”
“0”
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