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Interfacing 8-bit parallel memory with MC9S12XEP100

Question asked by Shraddha Nagle on Oct 8, 2017
Latest reply on Oct 10, 2017 by lama

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?

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