26 LCD CONTROLLER (LCDC)
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
26-3
In monochrome mode, a 16
×
4-bit table included in the LCDC is used as the look-up table to set up gray scale
data to be displayed.
LCD interface
The LCD interface performs frame rate modulation for passive LCD panels. It also formats display data and
generates the timing control signals for various LCD panels.
Power save circuit
This circuit controls the power save mode in the LCDC.
LCDC Output Pins
26.3
Table 26.3.1 lists the output pins of the LCD controller. Table 26.3.2 shows the pin configurations classified by type
of LCD panel.
3.1 LCDC Output Pins
Table 26.
Pin name
I/O
Qty
Function
FPDAT[23:0]
O
24
LCD display data outputs
FPFRAME
O
1
LCD frame clock output
FPLINE
O
1
LCD line clock output
FPSHIFT
O
1
LCD shift clock output
FPDRDY
O
1
LCD DRDY/MOD signal output
TFT_CTL[3:0]
O
4
TFT interface control signal outputs
The LCDC output pins are shared with I/O ports and are initially set as general purpose I/O port pins. The pin func-
tions must be switched using the port function select bits to use the general purpose I/O port pins as LCDC output
pins. For detailed information on pin function switching, see the “I/O Ports (GPIO)” chapter.
3.2 Pin Configurations by LCD Panel Type
Table 26.
Pin name
Monochrome passive panel
Color passive panel
TFT panel
4-bit data width 8-bit data width 4-bit data width
8-bit data width
format 1
8-bit data width
format 2
–
*
2
FPFRAME
FPFRAME
SPS
FPLINE
FPLINE
LP
FPSHIFT
FPSHIFT
DCLK
FPDRDY
MOD
FPSHIFT2
MOD
DEN
FPDAT0
–
*
1
D0
–
*
1
D0
D0
B3
FPDAT1
–
*
1
D1
–
*
1
D1
D1
B4
FPDAT2
–
*
1
D2
–
*
1
D2
D2
B5
FPDAT3
–
*
1
D3
–
*
1
D3
D3
B6
FPDAT4
D0
D4
D0
D4
D4
B7
FPDAT5
D1
D5
D1
D5
D5
G2
FPDAT6
D2
D6
D2
D6
D6
G3
FPDAT7
D3
D7
D3
D7
D7
G4
FPDAT8
–
*
1
G5
FPDAT9
–
*
1
G6
FPDAT10
–
*
1
G7
FPDAT11
–
*
1
R3
FPDAT12
–
*
1
R4
FPDAT13
–
*
1
R5
FPDAT14
–
*
1
R6
FPDAT15
–
*
1
R7
FPDAT16
–
*
1
B0
FPDAT17
–
*
1
B1
FPDAT18
–
*
1
B2
FPDAT19
–
*
1
G0
FPDAT20
–
*
1
G1
FPDAT21
–
*
1
R0
FPDAT22
–
*
1
R1
FPDAT23
–
*
1
R2