AN4088 datasheet(33/71 Pages) STMICROELECTRONICS

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AN4088

Peripheral migration

3.10

ADC interface

The table below presents the differences between the ADC interface of STM32F1 series

and STM32F0 series; these differences are the following:



New digital interface



New architecture and new features

Table 18. ADC differences between STM32F1 series and STM32F0 series

ADC

STM32F1 series

STM32F0 series

ADC Type

SAR structure

Repartition

ADC1 / ADC2 / ADC3

ADC

Max Sampling freq

1 MSPS

Number of channels

up to 21 channels

up to 16 channels + 3

internal(1)

Resolution

12-bit

Conversion Modes

Single / continuous / Scan / Discontinuous / Dual Mode

Single / continuous / Scan /

Discontinuous

Dual Mode

DMA

Yes

External Trigger

External event for regular

group

For ADC1 and ADC2:

TIM1 CC1

TIM1 CC2

TIM1 CC3

TIM2 CC2

TIM3 TRGO

TIM4 CC4

EXTI line 11 /

TIM8_TRGO

For ADC3:

TIM3 CC1

TIM2 CC3

TIM1 CC3

TIM8 CC1

TIM8 TRGO

TIM5 CC1

TIM5 CC3

External event for injected

group

For ADC1 and ADC2:

TIM1 TRGO

TIM1 CC4

TIM2 TRGO

TIM2 CC1

TIM3 CC4

TIM4 TRGO

EXTI line15 /

TIM8_CC4

For ADC3:

TIM1 TRGO

TIM1 CC4

TIM4 CC3

TIM8 CC2

TIM8 CC4

TIM5 TRGO

TIM5 CC4

External event

TIM1_TRGO

TIM1_CC4

TIM2_TRGO

TIM3_TRGO

TIM15_TRGO(1)

Supply requirement

2.4 V 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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