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STR720 Datasheet(PDF) 315 Page - STMicroelectronics

No. de pieza STR720
Descripción Electrónicos  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
PDF  401 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR720 Datasheet(HTML) 315 Page - STMicroelectronics

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STR720 - EXTENDED FUNCTION TIMER (EFT)
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21.3.4
Output Compare
In this section, the index “i”, may be A or B.
This function can be used to control an output waveform or indicating when a period of time
has elapsed.
When a match is found between the Output Compare register and the counter, the output
compare function:
– Assigns pins with a programmable value if the OCiE bit is set
– Sets a flag in the status register
– Generates an interrupt if enabled
Two 16-bit registers Output Compare Register A (OCAR) and Output Compare Register B
(OCBR) contain the value to be compared to the counter each timer clock cycle.
These registers are readable and writable and are not affected by the timer hardware. A reset
event changes the OCiR value to 8000h.
Timing resolution is one count of the counter: (fAPB/(CC7÷CC0+1)).
Figure 48. Input Capture Timing Diagram
FF01
FF02
FF03
FF03
APB_CLK
COUNTER REGISTER
ICAPi PIN
ICAPi FLAG
ICAPi REGISTER
Note: Active edge is rising edge.
Capture
Window
FF04
EXTCLK
1



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