2 Replies Latest reply on Mar 5, 2018 12:20 PM by user_497030312

NVRAM component does not support 4Kbit FRAM !?

user_497030312 Feb 23, 2018 5:48 AM

Hello,

I found that NVRAM SPI component does not support 4Kbits FRAM memory?

Is there any specific components or driver for them?

The problem is that 4Kbit memories has only one byte address.

thank you

1. Re: NVRAM component does not support 4Kbit FRAM !?

yliu Feb 25, 2018 11:52 PM (in response to user_497030312)

Hi,
Are you using this code example?
http://www.cypress.com/documentation/code-examples/ce219174-interfacing-spi-nvram-psocr-4

Thanks
Roy
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2. Re: NVRAM component does not support 4Kbit FRAM !?

user_497030312 Mar 5, 2018 12:20 PM (in response to yliu)

Hi,

Yes I do and this example is working fine, because when you write the sequence, it makes sequential write and this hides the problem.
When I try to write/read to a specific addresses, then there is a problem. In the drivers source code I found that there is no option for single byte addressing, which is the unique for 4kbit FRAMs compared to the others. When I modify the file with a single byte addressing then the memory read/write works fine.
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