26 LCD CONTROLLER (LCDC)
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
26-7
Setting the LCD Panel
26.5
Types of Panels
26.5.1
The LCD controller supports the following types of LCD panels.
• 4- or 8-bit single monochrome passive LCD panels
• 4- or 8-bit single color passive LCD panels
• 12-, 16- or 24-bit Generic HR-TFT LCD panels
Dual panels are not supported.
The type of LCD panel used must be set in the LCD controller in advance, using the control bits described below.
Selecting between STN and HR-TFT
Use PANELSEL/LCDC_DISPMOD register to select the type of LCD panel, either STN or HR-TFT.
PANELSEL = 1: Generic HR-TFT panel selected
PANELSEL = 0: STN panel selected (default)
Selecting between color and monochrome
Use COLOR/LCDC_DISPMOD register to select the type of LCD panel, either color or monochrome.
COLOR = 1: Color panel selected
COLOR = 0: Monochrome panel selected (default)
Selecting the STN panel data width
Use DWD[1:0]/LCDC_DISPMOD register to select the data width and format for STN panels.
5.1.1 Data Width Selection of STN Panels
Table 26.
COLOR
DWD[1:0]
LCD panel
1
0x3
Color single 8-bit passive LCD panel (format 2)
0x2
Reserved
0x1
Color single 8-bit passive LCD panel (format 1)
0x0
Color single 4-bit passive LCD panel
0
0x3
Monochrome single 8-bit passive LCD panel
0x2
Reserved
0x1
Monochrome single 8-bit passive LCD panel
0x0
Monochrome single 4-bit passive LCD panel
The data width for a generic HR-TFT LCD panel is determined according to the display (bpp) mode selected.
STN Panel Timing Parameters
26.5.2
The STN panel timing parameters shown in Figures below can be set using the LCDC control registers.
HT
VT
VDP
HDP
Non display period
Display period
5.2.1 STN Panel Timing Parameters
Figure 26.