參數(shù)資料
型號: M30302M8L-XXXFP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, PLASTIC, QFP-100
文件頁數(shù): 21/165頁
文件大小: 2188K
代理商: M30302M8L-XXXFP
Clock asynchronous serial I/O (UART) mode
117
Mitsubishi microcomputers
M16C / 30L Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(c) 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
(including the start bit, stop bit(s), and parity bit) is reversed. Set this function to “0” (not to reverse) for
usual use.
(d) 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 1.16.21
shows the example of detection timing of a bus collision (in UART mode).
Figure 1.16.21. Detection timing of a bus collision (in UART mode)
ST : Start bit
SP : Stop bit
ST
SP
Transfer clock
TxD2
RxD2
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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