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RM0090: Reference manual - STMicroelectronics

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Digital-to-analog converter (DAC) <strong>RM0090</strong><br />

Figure 54. DAC channel block diagram<br />

EXTI_9<br />

V DDA<br />

V SSA<br />

V REF+<br />

Table 55. DAC pins<br />

V REF+<br />

SWTRIGx<br />

TIM2_TRGO<br />

TIM4_TRGO<br />

TIM5_TRGO<br />

TIM6_TRGO<br />

TIM7_TRGO<br />

TIM8_TRGO<br />

DHRx<br />

TSELx[2:0] bits<br />

12-bit<br />

Name Signal type Remarks<br />

Input, analog reference<br />

positive<br />

Control logicx<br />

LFSRx trianglex<br />

V DDA Input, analog supply Analog power supply<br />

Note: Once the DAC channelx is enabled, the corresponding GPIO pin (PA4 or PA5) is<br />

automatically connected to the analog converter output (DAC_OUTx). In order to avoid<br />

parasitic consumption, the PA4 or PA5 pin should first be configured to analog (AIN).<br />

307/1416 Doc ID 018909 Rev 3<br />

Trigger selectorx<br />

DORx<br />

12-bit<br />

12-bit<br />

Digital-to-analog<br />

converterx<br />

DMAENx<br />

DAC control register<br />

DM A requestx<br />

TENx<br />

MAMPx[3:0] bits<br />

WAVENx[1:0] bits<br />

The higher/positive reference voltage for the DAC,<br />

1.8 V ≤ V REF+ ≤ V DDA<br />

V SSA Input, analog supply ground Ground for analog power supply<br />

DAC_OUTx Analog output signal DAC channelx analog output<br />

DAC_OUTx<br />

ai14708b

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