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Interfacing STM32 with External 512kx16 SRAM, 8bit data only accessible per one address of RAM

Question asked by patel.vishal.006 on Feb 25, 2017
Latest reply on Mar 11, 2017 by patel.vishal.006

Hi,I have STM32F4 interfaced with the external SRAM sized 512kx16 array. Now what I believe is (Pls correct me if i am wrong), Pointing to Every incremental Address should give me 16bit data. because SRAM is interfaced with 16bit wide data bus (non multiplexed)

 

For Example: 0x64000000 is the base address of my external SRAM. And I want to write hello, to this RAM, then It should happen like...

on 0x64000000 location, data should be written, 'H' 'E'  &

on 0x64000001 location, data should be written, 'L' 'L'  &

on 0x64000002 location, data should be written, 'O' 0xff .
And the same is should be getting in read back.

But What actually occurs is  

on 0x64000000 location, data is written, 'H' 'E'  &

on 0x64000001 location, data is written, 'E' 'L'  &

on 0x64000002 location, data is written, 'L' 'L'  &

on 0x64000003 location, data is written, 'L' 'O'  &

on 0x64000004 location, data is written, 'O' 0xff .

 So If I want to get the write data, I will have to read back 16 bit data from location 0x64000000, 0x64000002, and  0x64000004.

 

Can Anyone Has the experience of interfacing 512kx16bit array SRAM ? and facing the similar issues ??

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