fliptronics
New member
I thought I had figured out what I needed when I selected
the CFAH1602C-YYH-JP , but I discovered that there is also
the CFAH1602C-YYH-JPV
From looking at other forum discussions, it seems that VEE
is somehow related to temperature range.
I downloaded both data sheets and compared them line for line.
On page 1, they show the different part numbers.
On page 3, the JPV includes a ref to negative voltage.
Page 5 shows identical temperature and voltage ranges.
Page 7 shows a VEE pin shared with the LED Anode
Page 8 shows identical schematics.
All other pages are identical.
If VEE is related to temperature range, data sheet does not show it? What's the story?
Is an external VEE supply required if the JP (not JPV) version is selected?
If the JPV version is selected, how is the VEE output used, and how does that affect how the LED is driven
In my application, the temp will be a normal work environment,
and my available power will be 3 or 4 AA batteries. I am planning
to make the LED switched, to save power. Can I run the (JP)
version on 3 cells (4.5V dropping over time to maybe 3.0V) or
4 cells (6.0V dropping to 4.0V over time), or do I need to regulate
the supply. Do I need the JPV, or an external negative generator.
How do I find out the stock availability on this display.
What other questions should I be asking.
Thanks for any insight.
the CFAH1602C-YYH-JP , but I discovered that there is also
the CFAH1602C-YYH-JPV
From looking at other forum discussions, it seems that VEE
is somehow related to temperature range.
I downloaded both data sheets and compared them line for line.
On page 1, they show the different part numbers.
On page 3, the JPV includes a ref to negative voltage.
Page 5 shows identical temperature and voltage ranges.
Page 7 shows a VEE pin shared with the LED Anode
Page 8 shows identical schematics.
All other pages are identical.
If VEE is related to temperature range, data sheet does not show it? What's the story?
Is an external VEE supply required if the JP (not JPV) version is selected?
If the JPV version is selected, how is the VEE output used, and how does that affect how the LED is driven
In my application, the temp will be a normal work environment,
and my available power will be 3 or 4 AA batteries. I am planning
to make the LED switched, to save power. Can I run the (JP)
version on 3 cells (4.5V dropping over time to maybe 3.0V) or
4 cells (6.0V dropping to 4.0V over time), or do I need to regulate
the supply. Do I need the JPV, or an external negative generator.
How do I find out the stock availability on this display.
What other questions should I be asking.
Thanks for any insight.
Looking for additional LCD resources? Check out our LCD blog for the latest developments in LCD technology.