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Koko
Guest
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 Posted:
Tue Feb 22, 2005 6:10 am Post subject:
Looking for datasheet for Toshiba D455C and D546C391 |
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Hi, I'm looking for datasheets for a Toshiba d455c and D546c391 found on a
20-year old board. Does anyone have any information about these or know
where I should look? Thanks in advance for any help you can give.
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Franc Zabkar
Guest
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| Posted:
Tue Feb 22, 2005 12:10 pm Post subject:
Re: Looking for datasheet for Toshiba D455C and D546C391 |
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On Tue, 22 Feb 2005 05:37:46 GMT, "Koko" <a@b.c> put finger to
keyboard and composed:
| Quote: | Hi, I'm looking for datasheets for a Toshiba d455c and D546c391 found on a
20-year old board. Does anyone have any information about these or know
where I should look? Thanks in advance for any help you can give.
|
Try uPD455C (is there one digit missing?) or CD4555??? The second one
could be a uPD546C. Is it a 40-pin CPU or microcontroller? If so, then
I suspect it is ROMed - the 391 suffix would be the firmware ID.
BTW, are you sure these are Toshiba chips and not NEC?
Just in case the first number was a typo:
http://www.ee.washington.edu/stores/DataSheets/cd4000/cd4555.pdf
- Franc Zabkar
--
Please remove one 's' from my address when replying by email. |
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Koko
Guest
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| Posted:
Tue Feb 22, 2005 2:40 pm Post subject:
Re: Looking for datasheet for Toshiba D455C and D546C391 |
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Franc,
I'm posting on behalf of a friend who doesn't speak English well enough to
have confidence to post. I kind of thought it might be NEC, too. I'll get
back to you soon. Thank you!
"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:smil115hfomicmiada0j01dbcccmmm25me@4ax.com...
| Quote: | On Tue, 22 Feb 2005 05:37:46 GMT, "Koko" <a@b.c> put finger to
keyboard and composed:
Hi, I'm looking for datasheets for a Toshiba d455c and D546c391 found on a
20-year old board. Does anyone have any information about these or know
where I should look? Thanks in advance for any help you can give.
Try uPD455C (is there one digit missing?) or CD4555??? The second one
could be a uPD546C. Is it a 40-pin CPU or microcontroller? If so, then
I suspect it is ROMed - the 391 suffix would be the firmware ID.
BTW, are you sure these are Toshiba chips and not NEC?
Just in case the first number was a typo:
http://www.ee.washington.edu/stores/DataSheets/cd4000/cd4555.pdf
- Franc Zabkar
--
Please remove one 's' from my address when replying by email. |
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Patrick Cheung - townt.co
Guest
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| Posted:
Thu Feb 24, 2005 8:10 pm Post subject:
Re: Looking for datasheet for Toshiba D455C and D546C391 |
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HI !
Why not try the following link ?
http://www.toshiba.com/taec/cgi-bin/master_search.cgi
--
Patrick Cheung
Sales Department
Town Target Technology Limited
Address : 1805-7, Wu Sang House, 655 Nathan Road, Mongkok,
Kowloon, Hong Kong
Tel : 2505-5838 Fax : 2505-8121
E-mail : patrick.cheung@towntarget.com.hk
Web-site : http://www.townt.com/towne/ or www.towntarget.com.hk
"Koko" <a@b.c> ¼¶¼g©ó¶l¥ó·s»D:KyzSd.463852$8l.207319@pd7tw1no...
| Quote: | Hi, I'm looking for datasheets for a Toshiba d455c and D546c391 found on a
20-year old board. Does anyone have any information about these or know
where I should look? Thanks in advance for any help you can give.
|
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