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Old 3rd February 2012, 05:19 AM   #1
uHenry is offline uHenry  Australia
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Default Pls help with Chinese (STC) datasheet...

Hi Gents,

My first post here, though I've been lurking & learning for ages - anyway I'm keen to find out exactly what this IC's function is, problem being google gives up no data in English only Chinese It would really help me out.

Thanks
Henry
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Old 3rd February 2012, 05:45 AM   #2
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Hi Henry and welcome to diyaudio. I assume there is a part number other than just STC? If you post a link to one of the datasheets I may be able to have someone check it out and give a rough idea what it is for, or one of our chinese members may be able to assist.

Tony.
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Old 3rd February 2012, 06:02 AM   #3
uHenry is offline uHenry  Australia
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Hi Tony, yes I hastily posted whilst missing the plot (slaps self0.
Its an STC 90C54RD.

Here's one of many datasheets in the wild 90C54RD,价格,pdf Datasheet下载,采购90C54RD尽在114ic
PS I'm in Sydney too, cool!

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Old 3rd February 2012, 07:43 AM   #4
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OK I'll see if the other half can make sense of it when she gets home

Tony.
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Old 3rd February 2012, 09:01 AM   #5
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OK the chinese sites all basically said the same thing We sell electronics, at a good price, no specifics about the chip, however I suspect that it is an 8 bit microcontroller This datasheet may help http://www.datasheetcatalog.org/data...x/GMS97C56.pdf not sure if it is the same thing or not but some pictures at the chinese sites of the chip seem to match the 40 pin dip version.

Does it seem likely that it would be an 8 bit microprocessor?

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Old 3rd February 2012, 08:18 PM   #6
uHenry is offline uHenry  Australia
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8 bit microprocessor sounds right; its driving a multi segment led display/multifunction rotary encoder on a CS3310 based preamp. It looks suspiciously like a washed component, poorly printed text only visible at a certain angle -however- knowing now that STC seemingly have no desire to market beyond China, they wouldn't need a presentable product, so I won't lose any sleep over it.

Major thanks Tony for your research efforts, my mind is at ease!

Cheers & enjoy the weekend
Henry
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