TMS320F28P550SJ: Please help confirm the pin that connected to DACB

Frank Zhang

Tool/software:

Hi,

Previous related thread:

(+) TMS320F28P550SJ: How many DAC channels does this MCU have? - C2000 microcontrollers forum - C2000︎ microcontrollers - TI E2E support forums

As previously confirmed, the DACB on this chip is from the comparator 1 low voltage side. I'm trying to confirm which pin this DAC is connected to. I saw on the datasheet, it says pin 22, but it also says DACB is a buffered DAC which makes me wonder if we are talking about the same DACB? or there is a typo in the data sheet?

Thank you,

Frank

over 1 year ago

+1 Luke Jones over 1 year ago

TI__Mastermind 28580 points

Hi Frank,

This is a mistake in the datasheet, the correct signal name should be CMP1_DACL. This will be corrected in the next revision of the datasheet.

Thank you,

Luke

+1 MatthewPate over 1 year ago in reply to Luke Jones

TI__Guru* 86290 points

Frank,

Can you confirm which revision of the DS the above image came from? Revision A, which was updated when the device was production released in September of this year, has this corrected.

Here is HTML link to the DS https://www.ti.com/document-viewer/TMS320F28P550SJ/datasheet#GUID-20220708-CI0T-4B37-A921-2C8EA6BD2A8E/TITLE_A_TM_GPIO , specifically that pin attributes page referenced above.

Also here is PDF for revA. https://www.ti.com/lit/gpn/tms320f28p550sj

Using the above link will always pull the latest released version of the DS.

Best,

Matthew