topic Re: Interfacing 8-bit parallel memory with MC9S12XEP100 in ColdFire/68K Microcontrollers and Processors

Interfacing 8-bit parallel memory with MC9S12XEP100

shraddhanagle — Fri, 06 Oct 2017 04:13:15 GMT

Hello,

I have interfaced MC9S12XEP100 with 8-bit (16 address lines) parallel EEPROM where the A0 line of MC9S12XEP100 is connected to A0 line of EEPROM, A1 line of MC9S12XEP100 is connected to A1 line of EEPROM and so on till A15. While accessing the memory HDBE bit in EBICTL0 register is set to zero which implies DATA[15:8], UDS, and LDS disabled and ASIZ is set to 16. However, it is observed that only odd addresses of memory is accessed by the MC9S12XEP100. The A0 line of controller remains at logic HIGH level.

Is there any way to access the whole 8-bit memory using MC9S12XEP100 for above mentioned hardware configuration?

Re: Interfacing 8-bit parallel memory with MC9S12XEP100

yibbidy — Sun, 08 Oct 2017 20:39:11 GMT

Hi,

The microprocessor that you are using is not a Coldfire/68K, so you might be better asking your question in the forum for the S12 series:

S12 / MagniV Micro controllers

Cheers,

Shaun

Re: Interfacing 8-bit parallel memory with MC9S12XEP100

shraddhanagle — Mon, 09 Oct 2017 03:33:21 GMT

Thank you Shaun!

Re: Interfacing 8-bit parallel memory with MC9S12XEP100

TomE — Fri, 13 Oct 2017 01:13:53 GMT

One of the Admins should be able to move this thread there.

Actually, as the Author, I think there's an option somewhere that lets you move the thread to somewhere else.

Tom