Does STM32L100RC have opamps?

kazutakahirata · ‎2013-12-26

Posted on December 27, 2013 at 03:00

Hi,

I'm posting for the first time here.

I'm asking this because I am finding conflicting information:

When I go to:

http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1295

and click on ''2'' and ''3'' under ''Integrated op-amps'', STM32L100RC shows up.

When I click on STM32L100RC in the product selector above, I am taken to the product page, which does not mention op amps under ''Analog peripherals''.

When I download the PDF datasheet (not the reference manual), the list of features on the first page of the datasheet does not mention op amps either. However, when I look at the pin descriptions in the same datasheet, I do find OPAMP1_VINP and its friends mentioned.

I'm confused. If somebody could clarify this, that would be greatly appreciated.

Thanks,

raptorhal2 · ‎2013-12-26

Posted on December 27, 2013 at 03:32

See the Reference Manual Section 14.

Cheers, Hal

kazutakahirata · ‎2013-12-27

Posted on December 27, 2013 at 19:56

Baird,

Thank you for a quick response.

I guess the device does have opamps because Section 14 of the reference manual starts out with:

''This section applies to high and medium+ density devices only.''

http://www.st.com/st-web-ui/active/en/catalog/mmc/FM141/SC1169/SS1295/LN1808/PF255680

starts out with:

''The medium density plus ultra-low-power STM32L100RC incorporates ...''

Andrew Neil · ‎2013-12-27

Posted on December 27, 2013 at 20:31

The Datasheet /

Reference Manual are the definitive documents - product selectors, etc, just give a ''first pass'' overview to allow you to narrow-down a reasonably small set of possible candidates.

Also, the front page of a datasheet is just a ''headline'' summary - you need to study the full text to get the full picture.

http://www.8052.com/forum/read/190215