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ST72344K2 датащи(PDF) 177 Page - STMicroelectronics

номер детали ST72344K2
подробное описание детали  SCI asynchronous serial interface
PDF  247 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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ST72344K2 датащи(HTML) 177 Page - STMicroelectronics

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ST72344xx, ST2345xx
On-chip peripherals
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11.7.7
Interrupt generation
Figure 83.
Event flags and interrupt generation
Note:
Read/Write interrupts are generated only after stop or restart conditions. Figure 83 shows
the conditions for the generation of the two interrupts.
ITRE1/2
RF1
RF2
NACK
ITER
BERR
WF1
WF2
ITWE1/2
INTERRUPT 1
ITWE3
NACK
ITER
BERR
ITRE3
INTERRUPT 2
WF3
RF3
(Slave address 1/2)
(Slave address 3)
Data Status Flag
Data Status Flag
Dummy Write
Write Protect
Restart
Stop
Data Status Flag
Data Status Flag
Data Status Flag
Restart:
Stop: Stop condition on SDA
Dummy Write: True if no data is written in RAM
Data Status Flag: Actual Interrupt is produced when
this condition is true
Write Protect: True for Write operation and if slaves
Restart: Restart condition on SDA
slaves 1 and 2. For slave 3 and for Read operation
write protect will always be 0)
are write protected (since this is applicable for
Restart condition on SDA
Table 69.
Interrupt events
Interrupt event
Flag
Enable
control
bit
Exit
from
wait
Exit
from
halt
Interrupt on write to Slave 1
WF1
ITWE1
Yes
No
Interrupt on write to Slave 2
WF2
ITWE1
Yes
No
Interrupt on write to Slave 3
WF3
ITWE2
Yes
No
Interrupt on Read from Slave 1, Slave 2 or Slave 3.
RF1- RF3
ITREx
Yes
No
Errors
BERR, NACK
ITER
Yes
No



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