Forums

Ancient Philips MCU query

Started by dp March 16, 2013
On Fri, 22 Mar 2013 23:01:43 -0700 (PDT), the renowned
j.m.granville@gmail.com wrote:

>On Sunday, March 17, 2013 9:25:15 AM UTC+12, dp wrote: >> A friend of mine who often repairs old lab stuff has run into some board on >> which he has some Philips part, PCF4500WP in plcc44. The crystal is >> at pins 7 and 8. >> >> That is all the info he gave me when he asked me - and I know nothing >> about it. Perhaps someone here would have some info - datasheet or >> whatever, I'll just forward it to him. > >What frequency is the crystal, what is connected to the PLCC44, and what does the Board actually do ? > >IIRC Philips did make PCF33xx series uC which used their 8048 core,and they may have done some emulation style parts in PLCC44 > >-jg
PCF84C633A was a 8048 core with 64-segment LCD driver on-chip. I see PCAxxx and PCD3347. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
On Sat, 23 Mar 2013 01:35:40 -0700 (PDT), the renowned dp
<dp@tgi-sci.com> wrote:

>Thanks for all the replies and suggestions. I don't know how >far he got, may be he has fixed the device already. He sent me >also this a day or two ago (and I forgot to post it): > >"The instrument is a Hartmann&Braun O2/CO2 meter URAS10E. >A VFC output is connented to pin 6. Pin 13 seems to be serial I/O. >Pin 14 seems to be clock for the serial transfer. >Other pins looks to be parallel ports." > >Dimiter
FWIW, there's nothing similar in the 1992 Philips "Concise Catalog", but there are about 50 PCFxxx parts (none in a PLCC-44). Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com