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Altera_Forum
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16 years ago

SSRAM (IS61LPS25636A)) on Cyclone III starter board

I am trying to read a bunch of data from SSRAM (IS61LPS25636A)) on Cyclone III, which is 256k*32 bit in size. However, from the board manual, there are 32 data bits, 21 address bit (should be 18 bits...
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Altera_Forum
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16 years ago

Hi, Daixiwen,

When I tried to change the reading code to writing code, as attched,

(change ssram_d from input to output) according to the datasheet.

There is the following error.

In this code,

I am trying to write datastream of 00000000h,00000001h,00000002h...into the memory, but when I verified the contents of SSRAM, I found only last four insignificant bits are correct, the higher 4 bits is not 0000h in the first addresses.

Could you please have a look at this?

Thanks again.