ST7577 Sitronix Technology, ST7577 Datasheet - Page 17

• Manufacturer Part Number: ST7577
• Description: Dot Matrix LCD Controller/Driver
• Manufacturer: Sitronix Technology

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ST7577
LCD DRIVER DISPLAY DIRECTION
Register bits XD (horizontal direction) and MY (vertical mirror) control the horizontal and vertical display direction. XD
controls the X-address write direction in DDRAM while MY controls the common output direction. Therefore, it is necessary
to rewrite the display data to DDRAM after changing XD-bit setting. Refer to the following figure.
Figure 10 LCD Driver Display Direction
Ver 1.0a
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2008/02/14