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SDRAM and Flash interface in LPC546xx microcontroller

Question asked by Prasanna Naik on Apr 9, 2019
Latest reply on Apr 10, 2019 by jeremyzhou


   I have following queries regarding the external memory interface with LPC546xx:

1) Type of flash supported (parallel,serial, NOR,NAND,etc)

2) Can a SDRAM and a parallel NOR flash be connected together?

3) Refreshing of SDRAM: Does EMC takes care of this or software intervention is required to refresh SDRAM after regular intervals?

4) Clock speed supported for SDRAM

5) Interlocking between SDRAM and parallel flash (Bank switching)

6) I have never interfaced SDRAM or parallel flash with a microcontroller. Any supporting documents to understand the process, implementation,interfacing scheme and explaination would be helpful.



Thanks and best regards,