I have decided to use an LCD display for my project. In order to learn how to use one, I have consulted its and its drivers' datasheets. Here are the links for them:
Link for the LCD display's datasheet: WDG0151-TMI-V#N00.
Link for the LCD display's segment drivers' datasheet: NT7108C.
Link for the LCD display's com driver's datasheet: NT7107C.
If you would excuse, I would like to ask a couple of questions regarding them.
1) First of all, why aren't pin numbers of the drivers shown at the block diagram in the LCD display's datasheet which is at p.10? Also, not every signal's name is shown as well. Am I supposed to be able to extract a meaning out of a block diagram without knowing which signal goes to where?
2) Another puzzling point is as follows: In the p.10 of the LCD display's datasheet, there is a block diagram. In that diagram, there are 8+6 lines connected to the MPU. Also, there is an application circuit provided in p.20 of LCD display's segment drivers' datasheet. In the application circuit, there are 8+7 lines connected to the MPU. Now what does that mean?
3) In the p.6 of the datasheet of NT7108C, pins; CS1B, CS2B and CS3 are defined as follows:
In order to interface data for input or output, the terminals have to be CS1B=L, CS2B=L, and CS3=H.
and throughout the entire document, only that given combination of CS1B, CS2B and CS3 is mentioned. My question is: If only a single combination is being used, why are there 3 pins provided for a single task, instead of just 1?
4) As my last question, in this page, there is an application provided using the same LCD display. In that page, there is a figure given which explains how the display is structured. My question is: How are the authors of the page were able to come up with that figure? More precisely, which points in the datasheets helped the authors of the page to come up with that figure?
Thank you very much in advance.