Number of the ADCs in STM32F103RB

4 replies
798 views

Hello,
I look at the STM32F103RB datasheet and see that this microcontroller should have 2 ADCs. When I open Table 5 (see Figure 1 below in this post) in this datasheet, I see only ADC12_IN10 and so on, that is, only ADC12. Why?

Figure 1

This topic has been closed for replies.

mƎALLEmBest answer

ST Technical Moderator

No. ADC12_INx means it's a shared channels between ADC1 and ADC2 (two separated ADCs).

Used for example to Speed up the conversion using the interleaved mode, both ADCs are converting the same channel:

Refer also to this application note AN3116 "STM32™’s ADC modes and their applications" / section 2.2 Dual fast interleaved mode:

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.

mƎALLEm

ST Technical Moderator

Hello,

From the datasheet ADC12 starts from IN0. Could you please double check?

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.

M

Mykola_LevunAuthor

Associate III

Yes, starts from IN0. You didn't understand the question. ADC12 maybe it's ADC1 and ADC2?

mƎALLEmBest answer

ST Technical Moderator

No. ADC12_INx means it's a shared channels between ADC1 and ADC2 (two separated ADCs).

Used for example to Speed up the conversion using the interleaved mode, both ADCs are converting the same channel:

Refer also to this application note AN3116 "STM32™’s ADC modes and their applications" / section 2.2 Dual fast interleaved mode:

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.

Sign up

Click below to sign in

Login to the community

Click below to sign in