Table 28. Dac Differences Between Stm32L1 Series And Stm32L4 Series - ST STM32L1 Series Application Note

Peripheral migration
4.20 DAC
The STM32L4 Series implement some enhanced DAC compared to STM32L1 Series.
The table below shows the differences.

Table 28. DAC differences between STM32L1 Series and STM32L4 Series

DAC
Instances
Resolution
Left or right data alignment in 12-bit mode
Noise-wave and triangular-wave generation
Dual DAC channel for independent or simultaneous conversions
Features
DMA
TIM6 TRGO
TIM7 TRGO
TIM9 TRGO
External Trigger
TIM2 TRGO
TIM4 TRGO
EXTI line9
SW TRIG
Supply
1.8 V to 3.6 V
requirement
Reference
External
Voltage
Configuration
Color key:
= New feature or new architecture (difference between STM32L1 and STM32L4 Series)
= Same feature, but specification change or enhancement
= Feature not available (NA)
= Difference between STM32L1 and STM32L4 Series highlight
1. Except for Cat. 4 devices
54/58
STM32L1 Series
NA
-
DocID027094 Rev 3
STM32L4 Series
x2
12-bit
Buffer offset calibration.
DAC_OUTx can be disconnected from output
pin.
Sample and hold mode for low power operation
in Stop mode.
Yes
Yes
TIM6 TRGO
(1)
TIM8 TRGO
TIM7 TRGO
(1)
TIM5 TRGO
TIM2 TRGO
(1)
TIM4 TRGO
EXTI line9
SW TRIG
1.8 V to 3.6 V
Independent power supply (V
Reference voltage for STM32L4 Series
external (1.8 V to V
DDA
2.5 V)
SW compatible except for output buffer
management.
AN4612
)
DDA
) or internal (2.048 V or