# Anyone can tell what ic is this???

• posted

I believe it=B4s a shift register, but couldn=B4t find it=B4s code anywhere! The pinout is this, as in the design:

1-|A VCC|-16 2-|B 10|-15 3-|C 9|-14 4-|1 NC|-13 5-|2 8|-12 6-|3 7|-11 7-|4 6|-10 8-|GND 5|-9

Serial/Control data seems to go on pins 14 and 15.

I can=B4t find it!!!! Thanks in advance...

• posted

PCF8574 - 8-bit I/O Port for the I2C-bus (Philips).

• posted

ASCII diagrams seem to come out better if you start each line with a space: 1-|A VCC|-16 2-|B 10|-15 3-|C 9|-14 4-|1 NC|-13 5-|2 8|-12 6-|3 7|-11 7-|4 6|-10 8-|GND 5|-9

1-|A VCC|-16 2-|B 10|-15 3-|C 9|-14 4-|1 NC|-13 5-|2 8|-12 6-|3 7|-11 7-|4 6|-10 8-|GND 5|-9

I hope this works! Watch it not work this time. :-(

• posted

Didn't. Oh well - compare the diagrams here to the original post. Maybe the initial space in each line is needed only when posting the original, and not needed for a reply? Or maybe the fact that I copied the original diagram and changed the spacing so the pins lined up, vs typing it in?

Ed

• posted

The original one was probably done in variable width, so there are different numbers of spaces, which don't line up when you view it fixed width.

The thing about the space at the beginning - I've observed that, but it's mainly noticeable when they're mixed, e.g.:

Signal A ..... B ..... C .....

As I post this, A,B,and C form a column, but line A starts with the S, and B and C start with a blank - gotta go see how that renders. :-)

Cheers! Rich

• posted

Hm. No difference.

Oh, well, I've done what I can. I still don't know what chip it is, though.

Cheers! Rich

• posted

[snip]
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Worked perfectly. Both of them. ASCII diagrams *only* work if they are both created and viewed with a fixed-width font.

Tim

• posted

Tim Auton escreveu:

It=B4s aligned to me...

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