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[令和二年七月二十八日(2020/07/28)]
PC110 端子図の更新 確認   [to English Note

+++ 端子配置図を更改 +++

Moonlightさんのアドバイスで、「PC110」の出力端子(特に、色信号)を見直して、相互接続図を更新した

その結果、3色帯(暗色変化明色変化)を表示させると、以前の状態より、ずっと綺麗なグラデーションが表示出来るようになった。(図1 手前が更新後、奥が更新前)
以前のものの色表示能力に対して、格段の差がある。
この差は、実用面では、私にはあまり苦にはならなかった。ただ、知ってしまうと、気色は悪い。

今回の変更は、偶々、「5-inch VGA-TFTモジュール」の採用を検討中に、生じて来たことで、
彼の理論的な考察と実験とに基づいた「端子機能表」を、私が頂いて、「WVGA-TFT モジュール」で実験的に確認した結果だ。(図2<クリック>)

−−−−−−−−−−−−−−−−−−−−

+++ 相互接続 +++

各色のグループ分けは、殆ど同じだが、各色内部での順序の違いがあった。
それに加えて、赤色では使うべき端子と、そうでない端子とが入れ替わっていた。

Moonlightさんは、丁寧に、Chip&Tech社の資料を調べて、そこから、"こうであらねばならぬ"との結論を得られたが、私はひたすら実験的に決める方法を採って来た。

"実験的に決める"のも、もっと細かくやれば、今と同じ結果が得られただろうと思うが、旧版では、適当に打ち切った為に、中途半端な結果になってしまった。(反省!)

いずれにせよ、これで、「PC110」の色信号端子の確定が出来た!
勿論、他の電源端子などは、そのままでよいと思う。
ただ、+3.3V、+5V端子で電流容量の大きい方、小さい方があるので、別付の回路などに使う場合は、電流の取り過ぎによる電圧低下に注意しなければいけないと思う。


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(2020/07/28)
PC110 Confirmation of terminal diagram update

+++++ Terminal layout updated +++++

With the advice of Mr. Moonlight, I reviewed and updated the output terminals (especially color signals) of "PC110", and interconnection between the WVGA-TFT module.

As a result, when displaying 3 color bands, it became possible to display a more beautiful gradation than before. (Fig_1 The front is after the update, the back is before the update)
There is a marked difference from the color display capabilities of the previous ones.
This difference didn't cause me much trouble in practical use.
However, if I get to know it, I'll be disgusted.

This change happened by considering the adoption of "5-inch VGA-TFT module" by chance.
He deduced some improved tarminal layout with theoretical consideration and experiment.
I experimented this result with wiring on "WVGA-TFT module" (Fig_2 <click>), and udated the "terminal connection table".

−−−−−−−−−−−−−−−−−−─

++++ Interconnect +++

Although the grouping of each color was almost the same, there was a difference in the order within each color.
In addition, in Red color, the terminals that should be used and the terminals that were not used were interchanged.

He carefully examined Chip&Tech's technical manual.
From there, he drawn the conclusion that "it must be".
And I checked about it by the experimental method.

I think "experimental decision" would have achieved the same results as if it were done in more detail.
But in the old version, the result was half-finished because it was terminated properly. (reflect!)

In any case, with this, the color signal terminal of "PC110" could be confirmed !
Of course, I think that other power supply terminals can be left as they are.
However, the +3.3V and +5V terminals have limited current capacities, so when using in additional circuit, be careful of voltage drop due to excessive current.


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