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Messages - mike65535

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Character LCDs / Re: Device found on Digikey, but not here
« on: July 11, 2016, 07:06:52 AM »
So...

Is the display being sold by Digikey ( NHD-0440AZ-FL-GBW ) a 3.3V compatible unit or not?

Thanks.

2
Character LCDs / Re: Device found on Digikey, but not here
« on: July 08, 2016, 01:56:25 PM »
Thanks for the response.  However, I'm still trying to reconcile the information I've found...

The spec sheets for the two parts I mentioned differ significantly in their voltages:

Digikey page for NHD-0440AZ-FL-GBW...
http://www.digikey.com/product-detail/en/newhaven-display-intl/NHD-0440AZ-FL-GBW/NHD-0440AZ-FL-GBW-ND/1701248
...under "Datasheets" is a  link...
http://www.newhavendisplay.com/specs/NHD-0440AZ-FL-GBW.pdf
...in which it are the specs:
Input voltage                 VDD 2.7 - 5.5
H level input voltage    VIH 2.2V - VDD
H level output voltage  VOH 2.4V

New Haven Display's page for NHD-0440AZ-FL-YBW...
http://www.newhavendisplay.com/nhd0440azflybw-p-437.html
...is a "Product Specification" link...
http://www.newhavendisplay.com/redirect.html?goto=www.newhavendisplay.com%2Fspecs%2FNHD-0440AZ-FL-YBW.pdf&action=url
...in which are the specs

Supply Voltage           VDD      4.75 5.0 5.25 V
H Level input           Vih      0.7 VDD ‐ VDD V
H Level output         Voh     3.9 ‐ ‐ V


From the above, the New Haven Display-provided spec sheet for the part available on Digikey makes the claim the part *will* operate at 3.3V

Can you explain?  Thanks.

3
Character LCDs / Device found on Digikey, but not here
« on: July 08, 2016, 09:40:40 AM »
I am looking for 3.3V-compatible (for the control signals) character displays, preferably fairly large, lots of chars (say 4x40)

1. I found a device, NHD-0440AZ-FL-GBW, on digikey.com but for some reason it seems not to be available on this website.
(Here, the NHD-0440AZ-FL-YBW is available, but its inputs need to be 5V)
 Why is that device not available here?

2. Just as importantly, is that device truly 3.3V compatible?

-Mike

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