MM5453N driver for LCD ??

H

Henry Kolesnik

Guest
Can someone knowledgeable in this area please send me the mfg and part no.
of some LCD that work with the 5453 having as many 7 segment digits as
possible? 4, 4 1/2, 5 , & 5 1/2.
tnx

--

73
Hank WD5JFR
 
I think I have it figured out. The Lowe HF-235 radio can tune up to
X29.999MHz, where X is used as a status indicator and driven by an
exclusive-or gate. For display of frequency the leading or most significant
digit of the five can only be a one or a two. For a one bits 31 and 32
drive segments b and c. Segments a,d,e,g are tied together and bits 31 and
33 would make a 2. So if I'm using the correct terminology the 5453 is
driving a 4 1/2 digit display that has 6 digits where X is driven by another
chip and the next digit can only be a one or a two.
So I need to find a 6 digit LCD with 50 pins that match. Any ideas
appreciated.
tnx

73
Hank WD5JFR
"Henry Kolesnik" <kolesnik@sbcglobal.net> wrote in message
news:zdQ8e.278$yd7.150@newssvr11.news.prodigy.com...
Can someone knowledgeable in this area please send me the mfg and part no.
of some LCD that work with the 5453 having as many 7 segment digits as
possible? 4, 4 1/2, 5 , & 5 1/2.
tnx

--

73
Hank WD5JFR
Click to expand...
 
Tim

Thanks for pointing me there. I looked at all the Varitronix 4 1/2, 5, and
6 LCDs and could find nothing with the right pinouts.
All the Varitronix LCDs list drivers by OKI, ICM, and others but no MM5453N.
I think National and TI made the 5453 and my queries to them have not yet
been answered. For a reference the LCD should have DP on pin 13 and 5g on
pin 28.

--

73
Hank WD5JFR

--

73
Hank WD5JFR
"Tim Shoppa" <shoppa@trailing-edge.com> wrote in message
news:1113846011.349135.116230@f14g2000cwb.googlegroups.com...
So I need to find a 6 digit LCD with 50 pins that
match. Any ideas appreciated.

Varitronix makes 6-digit LCD's with 50 pins. What has stopped you from
comparing their pinouts to yours?

Tim.
Click to expand...
 
Hey Hank,

National info seems to be at http://www.national.com/pf/MM/MM5453.html

Are you looking for a sub for that LCD or a different driver?

John



"Henry Kolesnik" <kolesnik@sbcglobal.net> wrote in message
news:bTS8e.320$yd7.176@newssvr11.news.prodigy.com...
Tim

Thanks for pointing me there. I looked at all the Varitronix 4 1/2, 5,
and
6 LCDs and could find nothing with the right pinouts.
All the Varitronix LCDs list drivers by OKI, ICM, and others but no
MM5453N.
I think National and TI made the 5453 and my queries to them have not yet
been answered. For a reference the LCD should have DP on pin 13 and 5g on
pin 28.

--

73
Hank WD5JFR

--

73
Hank WD5JFR
"Tim Shoppa" <shoppa@trailing-edge.com> wrote in message
news:1113846011.349135.116230@f14g2000cwb.googlegroups.com...
So I need to find a 6 digit LCD with 50 pins that
match. Any ideas appreciated.

Varitronix makes 6-digit LCD's with 50 pins. What has stopped you from
comparing their pinouts to yours?

Tim.
Click to expand...
 
John I'm looking for a LCD> Got any ideas?
tnx

--

73
Hank WD5JFR
"John Strupat" <john.strupat@sympatico.ca> wrote in message
news:fT99e.3733$9G.307909@news20.bellglobal.com...
Hey Hank,

National info seems to be at http://www.national.com/pf/MM/MM5453.html

Are you looking for a sub for that LCD or a different driver?

John



"Henry Kolesnik" <kolesnik@sbcglobal.net> wrote in message
news:bTS8e.320$yd7.176@newssvr11.news.prodigy.com...
Tim

Thanks for pointing me there. I looked at all the Varitronix 4 1/2, 5,
and
6 LCDs and could find nothing with the right pinouts.
All the Varitronix LCDs list drivers by OKI, ICM, and others but no
MM5453N.
I think National and TI made the 5453 and my queries to them have not yet
been answered. For a reference the LCD should have DP on pin 13 and 5g
on
pin 28.

--

73
Hank WD5JFR

--

73
Hank WD5JFR
"Tim Shoppa" <shoppa@trailing-edge.com> wrote in message
news:1113846011.349135.116230@f14g2000cwb.googlegroups.com...
So I need to find a 6 digit LCD with 50 pins that
match. Any ideas appreciated.

Varitronix makes 6-digit LCD's with 50 pins. What has stopped you from
comparing their pinouts to yours?

Tim.
Click to expand...
 
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