TMS320F28069M: How many CMOS or TTL loads can hold a GPIO pin of this controller

Pavlin Stoyanoff

Expert 1715 points

Part Number: TMS320F28069M

Greetings! I want to use a GPIO pin of TMS320F28069M as a strobe sygnal. How many CMOS or TTL loads can support a pin?

Thanks!

over 2 years ago

0 Omer Amir over 2 years ago

TI__Mastermind 30185 points

Hello Pavlin,

I will contact our design team to find out about this and let you know. They should have a response by tomorrow.

Best regards,

Omer Amir

0 Omer Amir over 2 years ago in reply to Omer Amir

TI__Mastermind 30185 points

Hello Pavlin,

Just wanted to let you know that the design team is looking into this, but they may not have an answer until sometime next week.

Best regards,

Omer Amir

0 Jason Whiles over 2 years ago

TI__Expert 5700 points

Pavlin,

This thread is for a different device, but the answer will basically be the same. Just check the DC rating and divide by the current load on the pin for DC loads. For any rise/fall conditions you'll want to use the IBIS model.

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1164426/tms320f28375s-q1-fan-out-load

Best regards,

Jason

0 Omer Amir over 2 years ago

TI__Mastermind 30185 points

Hello Pavlin,

In addition to what Jason has stated, you can look at the Recommended Operating Conditions table in section 7.4 of the datasheet for the device.

Best regards,

Omer Amir

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28069M: How many CMOS or TTL loads can hold a GPIO pin of this controller