參數(shù)資料
型號: S1C63455F
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQFP128
封裝: PLASTIC, QFP5-128
文件頁數(shù): 20/119頁
文件大?。?/td> 865K
代理商: S1C63455F
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
with DATA SLICER and ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
115
Rev. 1.0
M306H1SFP
(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
(including the start bit, stop bit(s), and parity bit) is reversed. Set this function to “0” (not to reverse) for
usual use.
(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 2.11.21
shows the example of detection timing of a buss collision (in UART mode).
Figure 2.11.21 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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