Which pins are connected to the ADC "fast channels" in the STM32H743VIT6 MCU?

[lexaiden]

The information which pins are the ADC "Fast Channels" in the STM32H743VIT6 MCU differ between the documents "Reference Manual, RM0433 Rev 6" and "Datasheet, DS12110 Rev 7".

Datasheet, DS12110 Rev 7, page 283:

3. Direct channels are connected to analog I/Os (PA0_C, PA1_C, PC2_C and PC3_C) to optimize ADC performance.

4. Fast channels correspond to PC0, PC1, PC2, PC3, PA0, and PA1.

The pin description from page 76 and 77:

PC0 -> ADC123_INP10

PC1 -> ADC123_INN10, ADC123_INP11

(PC2 -> ADC123_INN11, ADC123_INP12: Is not available in the LQFP100 package)

PC2_C -> ADC3_INN1, ADC3_INP0

(PC3 -> ADC12_INN12, ADC12_INP13: Is not available in the LQFP100 package)

PC3_C -> ADC3_INP1

PA0 -> ADC1_INP16

(PA0_C -> ADC12_INN1, ADC12_INP0: Is not available in the LQFP100 package)

PA1 -> ADC1_INN16, ADC1_INP17

(PA1_C -> ADC12_INP1: Is not available in the LQFP100 package)

Reference Manual, RM0433 Rev 6, Table 199. ADC input/output pins, on page 910:

ADCx_INP[0:5] fast channels

ADCx_INP[6:19] slow channels

ADCx_INN[0:5] fast channels

ADCx_INN[6:19] slow channels

This does not match, because PC0 ADC123_INP10 (document DS12110) is higher than 5 (document RM0433) and therefore not a "fast channel", same for PA0 ADC1_INP16. Which document is correct?

[lexaiden]

Has an ST employee read this and is secretly working on an answer? Or am I waiting here for nothing? I've finished two PCB designs and just want to know which prototype to produce.

[waclawek.jan]

> Has an ST employee read this and is secretly working on an answer?

Most probably not. This is a primarily user-driven forum, with casual ST presence. You might want to try to contact ST as directly as possible, through FAE, and/or using the web support form (if it still exists).

JW

[VPiya.1]

I have same question. It is confusing

[Neuromod]

I hope this gets fixed too...

[hwsw]

Rev 10 of the datasheet changed to say "4. Fast channels correspond to PF3, PF5, PF7, PF9, PA6, PC4, PB1, PF11 and PF13."

Note that it also says "3. Direct channels are connected to analog I/Os (PA0_C, PA1_C, PC2_C and PC3_C) to optimize ADC performance."