AN4617 datasheet(18/26 Pages) STMICROELECTRONICS

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Peripheral migration

AN4617

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DocID027161 Rev 1

2.12

ADC interface

Table 13 presents the differences between the ADC interface of STM32F0 and STM32L0

series; these differences are the following:

•

power supply range

•

faster conversion

•

new features.

2.13

DAC interface

The STM32L0 series embeds an enhanced DAC versus some members of the F0 series.

The basic differences are summarized in Table 14.

2.14

COMP interface

Both the STM32F0 and STM32L0 series embed an enhanced ultra low power comparator.

Table 13. ADC differences between STM32F0 and STM32L0 series

ADC

STM32F0 series

STM32L0 series

Maximum sampling frequency

1 MSPS @ HSI14

(1000 ns @ 12-bit resolution)

1,14 MSPS @ HSI16

(875 ns @ 12-bit resolution)

Supply range

2.4 to 3.6 V

1.8 to 3.6 V

(for some product even from 1.65 V)

Internal monitoring

TRGx, VSENSE (IN16),

VREFINT (IN17),

VBAT (IN18)

TRGx, VSENSE (IN18),

VREFINT (IN17),

LCD_VLCD1 (IN16)

External triggers

TIM1, TIM2, TIM3 and TIM15

TIM2, TIM3, TIM6, TIM21, TIM22

or EXTI11

Oversampling

Not available

Ratio from 2 to 256x

Voltage regulator

Not available

Yes

Asynchronous clock prescaler

Not available

16 levels from 1 to 256

Low frequency mode

Not available

Yes

EOCAL interrupt

Not available

Yes

Table 14. DAC differences between STM32F0 and STM32L0 series

DAC feature

STM32F0 series

STM32L0 series

Number of channels

1x (2x F07x and F09x only)

1x (2x L07 only)

Noise & triangular wave generation

F07x and F09x only

Yes

HW trigger

TIM2, TIM3, TIM6, TIM7, TIM15

and EXTI

TIM2, TIM3, TIM6, TIM7,

TIM21 and EXTI

Supply range

2.4 to 3.6 V

1.8 to 3.6 V

Simultaneous conversion

Dual mode (F07x and F09x only)

L07 only

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