Digital-to-analog converter (DAC) RM0453
596/1461 RM0453 Rev 1
19.4.3 DAC channel enable
The DAC channel can be powered on by setting its corresponding EN1 bit in the DAC_CR
register. The DAC channel is then enabled after a t
WAKEUP
startup time.
Note: The EN1 bit enables the analog DAC channel1 only. The DAC channel1 digital interface is
enabled even if the EN1 bit is reset.
Table 112. DAC input/output pins
Pin name Signal type Remarks
VREF+
Input, analog reference
positive
The higher/positive reference voltage for the DAC,
V
REF+
≤ V
DDAmax
(refer to datasheet)
VDD Input, analog supply Analog power supply
VSS Input, analog supply ground Ground for analog power supply
DACx_OUT1 Analog output signal DACx channel1 analog output
Table 113. DAC internal input/output signals
Internal signal name Signal type Description
dac_ch1_dma Bidirectional DAC channel1 DMA request/acknowledge
dac_ch1_trgx (x = 1 to 15) Inputs DAC channel1 trigger inputs/acknowledge
dac_unr_it Output DAC underrun interrupt
dac_pclk Input DAC peripheral clock
dac_hold_ck Input DAC low-power clock used in Sample and hold mode
dac_out1
Analog
output
DAC channel1 output for on-chip peripherals
Table 114. DAC interconnection
Signal name Source Source type
dac_hold_ck ck_lsi LSI clock selected in the RCC
dac_ch1_trg1 tim1_trgo
Internal signal from on-chip
timers TIM1_TGO_CKTIM
dac_ch1_trg2 tim2_trgo
Internal signal from on-chip
timers TIM2_TGO_CKTIM
dac_ch1_trg11 lptim1_out
Internal signal from on-chip
timers LPTIM1_OUT
dac_ch1_trg12 lptim2_out
Internal signal from on-chip
timers LPTIM2_OUT
dac_ch1_trg13 lptim3_out
Internal signal from on-chip
timers LPTIM3_OUT
dac_ch1_trg14 exti9 External pin EXTI[9]
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