TMS320F28379D: Power up sequence

stevenh

Guru 20045 points

Part Number: TMS320F28379D

Does the TMS320F28379D have a specific power-up sequence? For example, should the core voltage come up before the I/O voltage

Thanks,
Stephen

over 2 years ago

0 Sinchita Maity over 2 years ago

TI__Prodigy 680 points

Hi,

The expert is on leave. Please expect a response by 5th Jan.

Regards,

Sinchita

+1 Hareesh Janakiraman over 2 years ago

TI__Guru* 95315 points

Power sequencing requirements are given in 8.9.1 Power Sequencing (page 60 of the datasheet) www.ti.com/lit/SPRS880.

0 stevenh over 2 years ago in reply to Hareesh Janakiraman

Guru 20045 points

Would there be any issue if the core voltage was stable before enabling the regulator for VDDIO?

The reply in the following post gives me the impression that VDDIO should come up before VDD. I didn't find anything in the datasheet saying that is true.

e2e.ti.com/.../tms320f28379d-tms320f28379d-power-sequencing

+1 Benjamin Collier over 2 years ago in reply to stevenh

TI__Mastermind 36526 points

Hi Steven,

Please see this section in the datasheet. VDD should be kept no more than .3V above VDDIO.

Best Regards,

Ben Collier

0 stevenh over 2 years ago in reply to Benjamin Collier

Guru 20045 points

Thanks.

Should VDDIO, VDD3VFL, and VDDOSC be supplied from separate voltage sources? If so, why?

+1 Hareesh Janakiraman over 2 years ago in reply to stevenh

TI__Guru* 95315 points

stevenh said:
Should VDDIO, VDD3VFL, and VDDOSC be supplied from separate voltage sources?

No.

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28379D: Power up sequence