AN4654 datasheet(21/32 Pages) STMICROELECTRONICS

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AN4654

Peripheral migration

3.11

ADC interface

The table below presents the differences between the ADC interface of STM32L1 series

and STM32L0 series; these differences are the following:

•

New analog design

•

New digital interface

•

New architecture and new features

Table 10. ADC differences between STM32L1 series and STM32L0 series

ADC

STM32L1 series

STM32L0 series

Type

SAR structure

Repartition

ADC1, ADC2

ADC

Max sampling freq

1 MSPS

1.14 MSPS

Number of channels Up to 40 channels + 2 internal

Up to 16 channels + 3 internal(1)

Resolution

12-bit

(16-bit with hardware oversampling)

Conversion Modes

Single / Continuous / Scan /

Discontinuous / Dual Mode

Single / Continuous / Scan /

Discontinuous

DMA

Yes

External Trigger

External event for regular

channels:

– TIM9_CC2

–TIM9_TRGO

– TIM2_CC3

– TIM2_CC2

–TIM3_TRGO

– TIM4_CC4

–TIM2_TRGO

– TIM3_CC1

– TIM3_CC3

–TIM4_TRGO

–TIM6_TRGO

– EXTI line11

External event for injected

channels:

– TIM9_CC1

–TIM9_TRGO

–TIM2_TRGO

– TIM2_CC1

– TIM3_CC4

–TIM4_TRGO

– TIM4_CC1

– TIM4_CC2

– TIM4_CC3

– TIM10_CC1

–TIM7_TRGO

– EXTI line15

TIM6_TRGO

TIM21_CH2

TIM2_TRGO

TIM2_CH4

TIM22_TRGO

TIM2_CH3

TIM3_TRGO

EXTI line 11

Supply requirement 1.8 to 3.6 V

1.65 to 3.6 V

Input range

Vref- ≤ Vin ≤ Vref+

VSSA ≤ VIN ≤ VDDA ≤ 3.6 V

1. Same feature but specification change or enhancement.

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