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7733 bảng dữ liệu(PDF) 254 Page - Renesas Technology Corp

tên linh kiện 7733
Giải thích chi tiết về linh kiện  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  940 Pages
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7733 bảng dữ liệu(HTML) 254 Page - Renesas Technology Corp

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SERIAL I/O
7733 Group User’s Manual
8–51
8.4 Clock asynchronous serial I/O (UART) mode
Fig. 8.4.4 How to write data after transmission is started
[When not using interrupts]
[When using interrupts]
A UARTi transmission interrupt request occurs
when the UARTi transmission buffer register
becomes empty.
UARTi transmission interrupt
UART0 transmission buffer register (addresses 33 16, 3216)
UART1 transmission buffer register (addresses 3B 16, 3A16)
UART2 transmission buffer register (addresses 67 16, 6616)
b15
b8
Writing of the next transmit data
Transmit data is set here.
b7
b0
g This diagram indicates bits and registers
required for processing.
Refer to Figures 8.4.6, 8.4.7 and 8.4.8
for details about the change of flag
status and the occurrence timing of an
interrupt request.
UART0 transmit/receive control register 1 (address 35 16)
UART1 transmit/receive control register 1 (address 3D 16)
UART2 transmit/receive control register 1 (address 69 16)
b7
b0
Transmission buffer empty flag
0: Data is present in the transmission buffer register.
1: No data is present in the transmission buffer register.
(Next transmit data can be written.)
Checking the status of the UARTi transmission buffer register
1



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