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AN3151 Datasheet(PDF) 9 Page - STMicroelectronics

Part # AN3151
Description  Digital constant-current controller
PDF  34 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3151 Datasheet(HTML) 9 Page - STMicroelectronics

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AN3151
Microcontroller peripherals
Doc ID 17051 Rev 1
9/34
2.2
AD converter
Some interesting characteristics of this microcontroller are highlighted here, like PWM
peripheral and ADC triggering functions conducting to a PI current regulation loop for every
channel.
Figure 5.
TIM1 and ADC triggering functions
In Figure 5 above, the ADC peripheral block diagram is shown. The main ADC features
used in this application are:
●
10-bit with 16 multiplexed channels
●
3.5 µs of conversion time @ 4 MHz
●
External trigger and timer trigger selection
●
End of conversion interrupt
The most important feature is the triggering function, forced by TIM1, used to enable the
conversion on some timer events (reset, enable, up/down, and count).



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