AN3114 datasheet(25/43 Pages) STMICROELECTRONICS

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AN3114

Displaying alphanumeric characters on the LCD glass

Doc ID 16829 Rev 3

25/43

4.2

Custom LCD glass HXO5002B used on STM8L1528-EVAL

The custom LCD glass HXO5002B mounted on the STM8L1528-EVAL is designed specially

for the LCD controller available in medium+ density STM8L152xx devices, high density

STM8L152xx/STM8L162xx devices. It is a combination of alphanumeric symbols and

various useful predefined symbols such as dot matrix, low-battery symbol, arrows (left, up,

right, and down), ST logo... Figure 16 shows the layout for the custom LCD HXO5002B.

The operating LCD mode is 1/8 duty and 1/4 bias. Each segment line can control up to eight

pixels. The integrated LCD controller can control up to 320 LCD segments that can be

divided between alphanumeric symbols (7 x 16 pixels), dot matrix (10 x 19 pixels), low-

battery symbol (4 pixels), arrows (4 pixels), antenna (6 pixels), ST logo (1 pixel) and 3 pixels

for mA, µa and nA signs. In total, 320 LCD segments are controlled through eight COM and

40 segment lines. Each segment line of the LCD glass is connected in the standard

configuration. Figure 17 shows the reference segment lines for the custom LCD HXO5002B.

Figure 16.

Layout for the custom LCD HXO5002B

Figure 17.

Reference LCD segments for the custom LCD HXO5002B

AN3114 Datasheet(PDF) 25 Page - STMicroelectronics