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RM0090: Reference manual - STMicroelectronics

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<strong>RM0090</strong> Analog-to-digital converter (ADC)<br />

Figure 34. Single ADC block diagram<br />

ADCx_IN0<br />

ADCx_IN1<br />

ADCx_IN15<br />

V REF+<br />

V REF-<br />

V DDA<br />

V SSA<br />

EXTI_15<br />

EXTI_11<br />

GPIO<br />

ports<br />

Temp. sensor<br />

VREFINT VBAT TIM1_CH4<br />

TIM1_TRGO<br />

TIM2_CH1<br />

TIM2_TRGO<br />

TIM3_CH2<br />

TIM3_CH4<br />

TIM4_CH1<br />

TIM4_CH2<br />

TIM4_CH3<br />

TIM4_TRGO<br />

TIM5_CH4<br />

TIM5_TRGO<br />

TIM8_CH2<br />

TIM8_CH3<br />

TIM8_CH4<br />

Analog<br />

mux<br />

End of conversion<br />

End of injected conversion<br />

Analog watchdog event<br />

up to 4<br />

up to 16<br />

JEXTSEL[3:0] bits<br />

JEXTEN<br />

[1:0] bits<br />

DMA overrun<br />

Start trigger<br />

(injected group)<br />

Injected<br />

channels<br />

Flags<br />

EOC<br />

JEOC<br />

AWD<br />

Regular<br />

channels<br />

Interrupt<br />

enable bits<br />

OVR OVRIE<br />

EOCIE<br />

JEOCIE<br />

AWDIE<br />

Analog watchdog<br />

Compare result<br />

Higher threshold (12 bits)<br />

Lower threshold (12 bits)<br />

Injected data registers<br />

(4 x 16 bits)<br />

Start trigger<br />

(regular group)<br />

Regular data register<br />

Analog to digital<br />

converter<br />

(16 bits)<br />

EXTSEL[3:0] bits<br />

EXTEN<br />

[1:0] bits<br />

ADC Interrupt to NVIC<br />

DMA request<br />

ADCCLK<br />

Doc ID 018909 Rev 3 264/1416<br />

Address/data bus<br />

From ADC prescaler<br />

TIM1_CH1<br />

TIM1_CH2<br />

TIM1_CH3<br />

TIM2_CH2<br />

TIM2_CH3<br />

TIM2_CH4<br />

TIM2_TRGO<br />

TIM3_CH1<br />

TIM3_TRGO<br />

TIM4_CH4<br />

TIM5_CH1<br />

TIM5_CH2<br />

TIM5_CH3<br />

TIM8_CH1<br />

TIM8_TRGO<br />

ai16046

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