AN4651 datasheet(31/34 Pages) STMICROELECTRONICS

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AN4651

Interconnection descriptions

3.24

From OPAMP to HRTIM1

The OPAMP2_VOUT can be used as a HRTIM1 internal event source connected to

HRTIM1_EEV4 or HRTIM1_EEV9.

In this case, the software must set OPAMP2_DIG as of PA6 alternate function (AF13) to

redirect OPAMP2_VOUT signal to the HRTIM1 external events through the Schmitt trigger.

3.25

From TIM to HRTIM1

The table below summarizes the list of possible connections between timers and HRTIM1.

3.26

From HRTIM1 to ADC

The high resolution timer can be used to generate an ADC trigger event.

The output from HRTIM1 is on signal HRTIM1_ADCTRG1/2/3/4.

The input (to ADC) is on signal EXT[15:0] for regular channels and JEXT[15:0] for injected

ones.

Table 19 details the connection between HRTIM1 and ADCs.

Table 18. Internal signals from timers to HRTIM1

Timer signal

HRTIM1 signal

Description

TIM1_TRGO

HRTIM1_EEV1

Internal event

TIM2_TRGO

HRTIM1_EEV2

Internal event

TIM3_TRGO

HRTIM1_EEV3

Internal event

TIM6_TRGO

HRTIM1_EEV6

Internal event

UPD_EN3

Update enable 3

TIM7_TRGO

HRTIM1_EEV7

Internal event

BMTRIG

Burst mode trigger event

BMCLK3

Burst mode clock

TIM15_TRGO

HRTIM1_EEV9

Internal event

TIM16_OC

UPD_EN1

Update enable 1

BMCLK1

Burst mode clock

TIM17_OC

UPD_EN2

Update enable 2

BMCLK2

Burst mode clock

Table 19. Internal signals from HRTIM1 to ADCs

ADC1/2 regular channels

ADC1/2 injected channels

HRTIM1

HRTIM1_ADCTRG1 event

HRTIM1_ADCTRG3 event

HRTIM1_ADCTRG2 event

HRTIM1_ADCTRG4 event

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