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ST72325AR7-Auto датащи(PDF) 108 Page - STMicroelectronics

номер детали ST72325AR7-Auto
подробное описание детали  SCI asynchronous serial interface
PDF  243 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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ST72325AR7-Auto датащи(HTML) 108 Page - STMicroelectronics

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16-bit timer
ST72325xxx-Auto
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Doc ID 13770 Rev 3
5
The alternate inputs (ICAP1 and ICAP2) are always directly connected to the timer. So any
transitions on these pins activates the input capture function.
6
Moreover if one of the ICAPi pins is configured as an input and the second one as an output,
an interrupt can be generated if the user toggles the output pin and if the ICIE bit is set.
7
This can be avoided if the input capture function i is disabled by reading the ICiHR (see note
1).
8
The TOF bit can be used with interrupt generation in order to measure events that go
beyond the timer range (FFFFh).
Figure 48.
Input capture block diagram
Figure 49.
Input capture timing diagram
ICIE
CC0
CC1
16-BIT FREE RUNNING
COUNTER
IEDG1
(Control Register 1) CR1
(Control Register 2) CR2
ICF2
ICF1
0
0
0
(Status Register) SR
IEDG2
ICAP1
ICAP2
EDGE DETECT
CIRCUIT2
16-BIT
IC1R Register
IC2R Register
EDGE DETECT
CIRCUIT1
pin
pin
FF01
FF02
FF03
FF03
TIMER CLOCK
COUNTER REGISTER
ICAPi PIN
ICAPi FLAG
ICAPi REGISTER
Note: The
rising edge is the active edge.



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