[STM32F4xx] Only 16 GPIO under control?

[hjm]

The STM32F4xx reference manual (RM0090) specifies under the GPIO main features section that there are "up to 16 I/Os under control" - does this mean I cannot control more than 16 GPIO pins or am I interpreting this incorrectly?

[AvaTar]

Where, exactly ?

And if so, it most probably refers to the size of one GPIO port.

The F4xx RefManual describes GPIO ports "numbered" from A to K, i.e. 11.

[hjm]

Section 8.2 on Page 267 first bulletpoint. Your explanation would make more sense.

https://www.st.com/content/ccc/resource/technical/document/reference_manual/3d/6d/5a/66/b4/99/40/d4/DM00031020.pdf/files/DM00031020.pdf/jcr:content/translations/en.DM00031020.pdf

[Tesla DeLorean]

Each bank supports 16 pins, this design is then replicated across multiple banks, A thru K, perhaps more or less usable depending on package