UPD161622 NEC, UPD161622 Datasheet - Page 47

• Manufacturer Part Number: UPD161622
• Description: 396 OUTPUT TFT-LCD SOURCE DRIVER
• Manufacturer: NEC

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5.10 Partial Display Mode
display mode). The start line of the area to be displayed in partial display mode is set using the partial display area
start line register (R20, R21), the number of lines in the area to be displayed is set using the partial display area line
count register (R22, R23), and the color of the area not to be displayed is set using the partial off area color register
(R19). If ”1” is set in the partial display area line count registers (R22, R23), the partial display areas each become 1
line. If “0” is set, there are no partial display areas but only normal display areas.
R23 is called Partial 2. The Partial 2 setting is enabled only when the Partial 1 setting has been performed (when R22
mode must be switched to the 8-clor mode.
partial display mode and vice versa.
The
The non-display area indicated by R20 and R22 is called Partial 1, and the non-display area indicates by R21 and
Low power consumption cannot be achieved if only the partial mode is set. If low power consumption is required, the
The following sequence is recommended to avoid display malfunction when switching from normal display mode to
Partial display start
line (R20, R21)
0). Therefore, to set only one area as a non-display area, perform only the setting for Partial 1.
Cautions 1. The "scroll step count register (R17)" command is ignored in the partial display mode.
Display
start line (00H)
PD161622 is provided with a function that allows sections within the screen to be displayed separately (partial
2. The specified partial areas must not directly overlap, and the Partial 1 area and Partial 2 area
3. When setting the partial display areas, be sure to observe the following relationship.
must be separated by at least one line. If the areas overlap, only the Partial 1 settings are valid,
and partial display is not performed for the Partial 2 area.
“00H”
R22 (R23)
Section not displayed
00H
R20 (R21)
“AFH”
01H
Figure 5–26. Partial Display Mode
Data Sheet S15649EJ2V0DS
02H
03H
...
81H
82H
PD161622
83H
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