Update: Checked and working!- Ready made PCB for a 4-Chip Bankstick

MIDIbox HUIs
1

I´ve designed this little PCB for a Bankstick of four Atmel EEPROMs “24C256”.

I´d like to check this with the people in the forum before I continue. And, if it´s correct, I hope someone finds it useful.

Thanx,

Pablo P

Update: I removed this version because it had some little bugs. See below.

2

i can send you the design for 8 bankstick if you like. it fits on a very small board and works (i use it in the seq) and can be opened with the free eagle soft.

3

I thank you, that’d be nice.

Thing is what I found are 24C256 from atmel, which have only two pins for chip select, thus giving a max of 4.

I checked and double-checked the board, and seems to be fine. But since it’s the first one I design I wanted to check it out.

4

The PCB is OK and working. It’s useful if you have Atmel’s eeproms. They will allow just 4 ICs to be used together. So this PCB is for a bankstick made of four chips. I’m adding a slightly updated design for those who could find it handy. There are two differences:

First one is that it makes clear where the two bridges should be placed.

Second, and maybe more important, there was a confusion regarding the labels of the pins in J1. sc should have been sd and viceversa.

Cya

[bankstick4p.rar](< base_url >/applications/core/interface/file/attachment.php?id=764)

[bankstick4p.rar](< base_url >/applications/core/interface/file/attachment.php?id=3906)