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Re: Latest TF534 is here
Posted: 10 Mar 2019 19:34
by PhilC
Hi TF,
A quick question RE the ram on the TF534. The ram on the BOM is AS6C800855ZIN 1mb x 8. I'm trying to ecconomise whilst building the boards and have quite a few Sims of various sizes. Do you knowif it is possible to put a larger capacity chips on the board, such as 16mb x 8 etc. Obviously they have to be the same pinout etc.
Re: Latest TF534 is here
Posted: 10 Mar 2019 21:23
by alenppc
That’s not going to work, Simms are DRAM, this is SRAM
Re: Latest TF534 is here
Posted: 10 Mar 2019 21:32
by PhilC
alenppc wrote: 10 Mar 2019 21:23
That’s not going to work, Simms are DRAM, this is SRAM
Ok, that's fair enough. Just a thought.
Re: Latest TF534 is here
Posted: 10 Mar 2019 22:18
by terriblefire
Trying to economize on your first build will result in a very expensive meal for your trash can.
Re: Latest TF534 is here
Posted: 11 Mar 2019 00:22
by Maximilian
Does anybody have a complete tf534 Digikey/Mouser/etc. list with part numbers?
Re: Latest TF534 is here
Posted: 11 Mar 2019 14:54
by theq
Maximilian wrote: 11 Mar 2019 00:22
Does anybody have a complete tf534 Digikey/Mouser/etc. list with part numbers?
I think I do. Ordered it a couple of days ago, but with 10kOhm resistors instead og 2k2. Will change and PM you it later.
Re: Latest TF534 is here
Posted: 11 Mar 2019 16:50
by theq
Here is my TF534 BOM from Digikey. Since I'm totally fresh to this, and not been able to watch all of TerribleFire's YouTube videos, I'm not 100% sure which oscillator to pick. Therefore there are 3 to choose from in this BOM. Pick the one you need. :)
If you do see anything that could have been chosen differently, please tell. There more we share the better. :ugeek:
Re: Latest TF534 is here
Posted: 11 Mar 2019 17:19
by alenppc
I think CB3LV-3C-33M0000 is the only oscillator that will work from your list. The card will never run at 100 mhz, so forget that.
My suggestion for oscillators that I use are CTX314LVCT-ND and 887-1181-1-ND.
You can use a 33 Mhz cpu and run it very nicely at 36 without issues or heatsinks (and it will run faster than the 50 mhz on the 330).
Re: Latest TF534 is here
Posted: 11 Mar 2019 18:04
by theq
alenppc wrote: 11 Mar 2019 17:19
(and it will run faster than the 50 mhz on the 330).
Sweet! Can't wait till it's released to the rest of us noobs :D
Re: Latest TF534 is here
Posted: 11 Mar 2019 20:50
by Maximilian
Thanks Theq for the part numbers!
I'm not sure how you are going to mount the board, 732-2671-ND (edit)looks like(/edit) a standard pin strip that will probably damage your MC68000 socket, 110-44-964-41-001000 has machined legs but are to short.. does anyone have some insight in this?
The BOM on the GIT now has a SPI flash part added but that is a 16Mbit part and you have to make sure you get the correct version with the correct spacing.