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7721 датащи(PDF) 240 Page - Renesas Technology Corp

номер детали 7721
подробное описание детали  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  577 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7721 датащи(HTML) 240 Page - Renesas Technology Corp

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7721 Group User’s Manual
11–37
SERIAL I/O
11.4 Clock asynchronous serial I/O (UART) mode
Fig. 11.4.5 Detection of transmit completion
[When not using interrupts]
[When using interrupts]
UARTi transmit interrupt
UART0 transmit interrupt control register (Address 7116)
UART1 transmit interrupt control register (Address 7316)
b7
b0
Interrupt request bit
Checking start of transmission
UART0 transmit/receive control register 0 (Address 3416)
UART1 transmit/receive control register 0 (Address 3C16)
b7
b0
Checking completion of transmission.
Transmit register empty flag
0: During transmission
1: Transmission completed
Processing at completion of transmission
0:
1:
No interrupt requested
Interrupt requested
(Transmission has started.)
A UARTi transmit interrupt request
occurs when transmission starts.
Note : This figure shows the bits and registers required
for processing.
Refer to “Figures 11.4.6 to 11.4.8” for the
change of flag state and the occurrence timing
of an interrupt request.



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