Page address and Line Address

MD13

• September 23, 2023 12:06

Hello,

We are currently utilizing the 128x64 graphic LCD with the RL78/G14 microcontroller, interfaced through SPI. We're encountering challenges in displaying characters effectively and seek your assistance.

Specifically, we'd like to confirm if the 128x64 supports Case3 and Case4 scenarios. We've attached a snapshot for your reference. Your insights on the compatibility of these cases with the LCD would be highly valuable.

Your response would greatly assist us.

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  Engineering Support

  Community moderator

  • September 25, 2023 21:03

  Hello,

  The vertical spacing between characters needs to be in full page (8 pixel) increments.  Therefore, the 4-pixel and 6-pixel spacing will not work in this example.

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  MD13

  • September 29, 2023 11:53
  • Edited

  I kindly request your recommendation for a 128x64 Graphic LCD(SPI Interface) suitable for utilization in Case 3 and Case 4.

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  Engineering Support

  Community moderator

  • October 03, 2023 21:09

  Hello,

  None of our graphic LCDs support the cases with 4-pixel and 6-pixel vertical spacing.  The best workaround for this is to use a display with the ST7565 controller.  You will need to create custom characters to accommodate cases 3 and 4.

  For case 3:

  • Page 0: Top half of "A" in rows 5-8
  • Page 1: Bottom half of "A" in rows 1-4
  • Page 2: Character "B"

  For case 4:

  • Page 0: Top half of "A" in rows 5-8
  • Page 1: Bottom half of "A" in rows 1-4
  • Page 2: Top 3/4 of "B" in rows 3-8
  • Page 3: Bottom 1/4 of "B" in rows 1-2

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