Spin Semiconductor

Can i use 4 eeprom 24c32 and use a switch to chose a active eeprom.

It is a bit more complex than just a switch, you need to make the target 24LC32A the active one then tell the FV-1 to read in the program.

Yes you can you up to 8 EEPROMS if done correctly, Each EEPROM has 3 addres lines which are used to select the active chip so you will need to make a switching circuit around the A0, A1 and A3 which are pin 1,2,3 on a DIP 24lc32a.

Switching the active chip can be done many ways from a simple switch setup to control via a micro controller.

The link below shows a very simple way to select between 2 eeproms but that could easily be expanded to 4 with a little tinkering.


http://www.muzique.com/news/adding-memo ... -1-reverb/

frank wrote: ↑Sat Sep 29, 2018 10:21 am It is a bit more complex than just a switch, you need to make the target 24LC32A the active one then tell the FV-1 to read in the program.

Thanks Admin.
How can i use a eeprom (24C32) and I2C eeprom(24LC256).

frank wrote: ↑Sat Sep 29, 2018 10:21 am It is a bit more complex than just a switch, you need to make the target 24LC32A the active one then tell the FV-1 to read in the program.

Can i use a arduino IC instead of 24C32 ???

You cannot use a 24LC256, you must use a 24LC32A

You can use a micro to emulate an eeprom but we do not have any code to do the. Other users of the FV-1 have done it.

frank wrote: ↑Mon Oct 08, 2018 8:34 am You cannot use a 24LC256, you must use a 24LC32A

Frank, I have used other EEPROMS like a 24lc64 and a 24lc256 without any problems as long as you start each program at the correct address for the FV-1, of course you can still only address 8 effects directly this way using S0-S2. Using a larger EEPROM this way does not expand how many effects programs can be used.

ice-nine wrote: ↑Mon Oct 08, 2018 11:40 am

frank wrote: ↑Mon Oct 08, 2018 8:34 am You cannot use a 24LC256, you must use a 24LC32A

Frank, I have used other EEPROMS like a 24lc64 and a 24lc256 without any problems as long as you start each program at the correct address for the FV-1, of course you can still only address 8 effects directly this way using S0-S2. Using a larger EEPROM this way does not expand how many effects programs can be used.

great

ice-nine wrote: ↑Mon Oct 08, 2018 11:40 am Frank, I have used other EEPROMS like a 24lc64 and a 24lc256 without any problems as long as you start each program at the correct address for the FV-1, of course you can still only address 8 effects directly this way using S0-S2. Using a larger EEPROM this way does not expand how many effects programs can be used.

Yeah, looking at the datasheet I see it would work.

ice-nine wrote: ↑Sun Sep 30, 2018 3:48 am Yes you can you up to 8 EEPROMS if done correctly...

much more, than 8. Because inactive ROMs can be on same inactive address.


32lc64 and others working fine, because have same protocol (2 bytes addressing)