topic Re: VF6 and 8bit-NAND Flash memory in Vybrid Processors

VF6 and 8bit-NAND Flash memory

george — Tue, 16 Jul 2013 14:12:51 GMT

Hi all,

I wish to connect VF6 series and 8bit-NAND of Vybrid.

However, it is not known whether it is correct to use which 8 bits of NF_IO [15:0].

Is my understanding correct although it seems that NF_IO [7:0] is correct?

Best Regards,

George

naoumgitnik — Mon, 22 Jul 2013 22:19:18 GMT

Dear George,

Below are excerpts from the NAND FLASH operation descriptions:

"This 8-bit bus acts as a multiplexed bus to transfer data, address, and instructions."
" Bidirectional 8-bit multiplexed bus used to send data/command/address to their respective registers in the NAND flash device. The data read from the NAND flash device is also available on these lines."
"For 16-bit devices, commands and addresses use the lower 8 bits (7:0). The upper 8 bits of the 16-bit data bus are used only during data-transfer cycles."
Etc.

So, it is the lower 8 bits; they are always used - for both 8- and 16-bit devices.

Sincerely, Naoum Gitnik.

george — Wed, 24 Jul 2013 08:42:41 GMT

Thanks Naoum,

Fukutomi