ST7577 Sitronix Technology, ST7577 Datasheet - Page 20

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

www.DataSheet4U.com
ST7577
PARTIAL DISPLAY (SOFTWARE)
The Partial Display function is controlled by software instruction. This feature is only available under 1/39 duty mode
(DTY=”L”). Although only 26 common outputs are used, the duty of Partial Display is not changed (1/39 Duty). Those
unused commons output the non-selected waveform.
There are 3 options for partial display operation: Upper, Middle and Lower (refer to Figure 13~Figure 14).
Figure 15 Partial Display OFF ( DA1=0,DA0=0)
Figure 16 Partial Display: Upper Mode ( DA1=0, DA0=1)
Ver 1.0a
20/48
2008/02/14