MM5453N driver for LCD ??

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

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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

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.

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Hank WD5JFR

Hey Hank,

National info seems to be at

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

John

and

MM5453N.

John I'm looking for a LCD> Got any ideas? tnx

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