S25FS128S interfacing problem with RTD2660

[Anonymous]

Hi, How can i use s25fs128s as a simple SPI flash. I am using this flash mem with RTD2660 but when i send the command 0x46(comman instruction type is read ) and 0x9f(command for Jedec ID ) but it's not responding, when i read the Jedec id  always showing 0xFFFFFF.

#wp not connected  - 3

#reset not connected -7

SI(FLASH) ->> SO(RTD2660)

SO(FLASH) ->>SI(RTD2660)

SCK   ->> SCK

#CS ->> gnd

[Anonymous]

Hello Malik,

For reading the instruction  the command is 03h not 46h . On how many devices did you try ? Do you the same issue on all the devices.

Thanks,

Krishna.

[Anonymous]

But I am using RTD2660 Board in which s25fs128s is connected with SPi ,so my RTD controller communicate with serial flash when i sending  0x46 to tell ISP i want to read Device ID with this command 0x9f