TMS320F2808: Detailed differences between 2808 and 2809

Cristian Davila

Part Number: TMS320F2808
Other Parts Discussed in Thread: SM320F2808-EP, TMS320F2809,

Hi All,

I am not sure how to find a detailed differences between the 2808 and 2809 DSPs. Mostly, I need to prove that using the 2808 from the 2809 does not pose a risk to the design. We currently use a 2809 but we now have a higher temperature requirement that the 2808 can reach. I have looked at the spec sheet and understand the flash/pwm/dac differences as per the following threads, but I need a little bit more information if possible.

Here are the two threads I've found:

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/48268/difference-between-f2808-and-f2809

e2e.ti.com/.../question-about-f2808-to-f2809-migration

over 4 years ago

0 Hareesh Janakiraman over 4 years ago

TI__Guru* 95315 points

Both TMS320F2808 and TMS320F2809 are rated for -40°C to 125°C operation. I presume you are planning to switch to SM320F2808-EP device which is rated for -55°C to 125°C. If you take into account the differences in flash size, ADC speed and number of HRPWM channels as illustrated in Table 6-1. Device Comparison (100-MHz Devices) [page 5 of SPRS230P], you should be good from a firmware point of view. Both devices are manufactured using the same process technology and hence have similar electrical characteristics.

0 Cristian Davila over 4 years ago in reply to Hareesh Janakiraman

Prodigy 10 points

Hi Hareesh,

I think the last part about the manufacturing process is the key point for me! Do you know if there is any documentation on this in the public domain?

0 Hareesh Janakiraman over 4 years ago in reply to Cristian Davila

TI__Guru* 95315 points

Have you signed a Materials declaration NDA? Please respond to my private message.

0 Cristian Davila over 4 years ago in reply to Hareesh Janakiraman

Prodigy 10 points

I will reply via a message.

+1 Hareesh Janakiraman over 4 years ago in reply to Cristian Davila

TI__Guru* 95315 points

I have replied. Let us continue the conversation there and close this post.

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TMS320F2808: Detailed differences between 2808 and 2809