Dear all,
we are operating a MC9S12XDP512 / MC9S12XEP100 micro controller in expanded mode. On the external bus a static RAM IC is connected without external pull up / down resistors on data bus.
What is your the recommendation regarding pull up / down resistors:
We are looking forward to get an answer to the questions soon.
With kind regards
Leopold
Hi,
a) as a first step I would like to direct you to my supporting material:
https://community.nxp.com/docs/DOC-93594
Please read it carefully. It will simplify your design and debugging issues.
b) No there is no reason to have any pull resistor on the bus.
If you have any additional questions, do not hesitate to ask....
Best regards,
Ladislav