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7721 bảng dữ liệu(PDF) 246 Page - Renesas Technology Corp

tên linh kiện 7721
Giải thích chi tiết về linh kiện  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  577 Pages
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7721 bảng dữ liệu(HTML) 246 Page - Renesas Technology Corp

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7721 Group User’s Manual
11–43
SERIAL I/O
11.4 Clock asynchronous serial I/O (UART) mode
Fig. 11.4.10 Processing after receive completion
[When not using interrupts]
[When using interrupts]
A UARTi receive interrupt request
occurs when reception is completed.
UARTi receive interrupt
Processing after reading out receive data
UART0 receive buffer register (Addresses 3716, 3616)
UART1 receive buffer register (Addresses 3F16, 3E16)
b15
b8
Reading of receive data
Read out receive data.
b7
b0
0
0
0
0
0
0
0
UART0 transmit/receive control register 1 (Address 3516)
UART1 transmit/receive control register 1 (Address 3D16)
b7
b0
Receive complete flag
0 : Reception not completed
1 : Reception completed
Checking completion of reception
1
UART0 transmit/receive control register 1 (Address 3516)
UART1 transmit/receive control register 1 (Address 3D16)
b7
b0
Checking error
Framing error flag
Parity error flag
Error sum flag
0 : No error
1 : Error detected
1
Note : This figure shows the bits and registers required
for processing.
Refer to “Figure 11.4.12” for the change of flag
state and the occurrence timing of an interrupt
request.
UART0 transmit/receive control register 1 (Address 3516)
UART1 transmit/receive control register 1 (Address 3D16)
b7
b0
Checking error
Overrun error flag
0 : No overrun error
1 : Overrun error detected
1



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