CDT-7350 based sequencer?

[dano12]

Over on the make blog there was a post today about an 8-step sequencer. Thinking it was one of the garden variety 4017 jobbers I've seen so many types, I clicked anyway.

I was surprised to learn about possibly very cool chip: the CDT-7350. Unfortunately, it appears to be unobtainable and the only datasheet I've seen is in Japanese.

The cool part it is that it appears to have an lfo built in, so making an easy sequencer would be super simple.

sequencer schematic: http://masa921.hp.infoseek.co.jp/SQ-160_mini3.gif
Japanese datasheet: http://www.ic37.com/icasp/pdf_open.asp?id=1967233_849492

Anyone ever heard of this chip?

[R.G.]

In the EE profession, many chips are not based on silicon or germanium, but instead are made on wafers of high-purity unobtainium.

These chips nearly always do exactly the job you want, but there are some difficulties with the parts buyers whining all the time if you use them.

[jalien21]

does anyone ever use sequencers to control filters or something on a guitar effect rather than like, the VCO of a synth? i think that would be kind of fun.

[snufkin]

gah I need this any one Japanese have access to them? 

does anyone ever use sequencers to control filters or something on a guitar effect rather than like, the VCO of a synth? i think that would be kind of fun.

many pedals do this such as the zvex seek wah and ooh wah

some use sequencers to control phase such as the infinitphase

[snufkin]

success !

group buy ? works out at about £3 a chip

http://www.rakuten.co.jp/denshi/155686/283047/394289/

or translated here

http://translate.google.com/translate?u=http%3A%2F%2Fwww.rakuten.co.jp%2Fdenshi%2F155686%2F283047%2F394289%2F&hl=en&ie=UTF-8&sl=ja&tl=en