TMS320F280025C: VDDIO ramp up rate

Julia Li

Tool/software:

Hi Champs,

If customer board's VDDIO ramp up rate cannot meet our minimum limit(0.8mV/us), what will happen to this C2000 device? Will it cause chip damage?

Thanks!

Julia

over 1 year ago

0 Hadi Moradisizkoohi over 1 year ago

TI__Expert 7100 points

Hi Julia,

If the minimum slew rate is not met, XRSn might toggle a few times until VDDIO crosses the I/O BOR region.

Regards,

Hadi

0 Julia Li over 1 year ago in reply to Hadi Moradisizkoohi

TI__Expert 4755 points

Hi Hadi,

What are the risks and impacts if a BOR occurs during the power-up process in F280025? Will this cause the device failing?

Thanks!

Julia

0 Hadi Moradisizkoohi over 1 year ago in reply to Julia Li

TI__Expert 7100 points

Hi Julia,

The boot-up sequence does not start until the XRSn pin is released by all internal and external sources.

Regards,

Hadi

0 hua guoyong over 1 year ago in reply to Hadi Moradisizkoohi

Prodigy 10 points

yellow:VDDA，green:VDDIO，pink:3.3V，bule:VREFHI，red:XSRn脚，orange:VDD(1.2V)

VDDIO ramp up rate is 0.8mV/us.From the image below, would there be any issues with DSP startup in this situation？

According to the specifications, the switching operation on XSRn does not have any adverse effects on the device. So the switching of XRSn during DSP startup will not cause device damage, right?

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280025C: VDDIO ramp up rate