ST7781
11.1.8 Display Control 2 (R08h)
Display Control 2 (R08h)
RS
/WR
/RD D15 D14 D13 D12 D11 D10
D9
FP1
0
D8
FP0
0
D7
0
D6
BP6
0
D5
BP5
0
D4
BP4
0
D3
BP3
0
D2
BP2
0
D1
BP1
0
D0
BP0
0
1
↑
1
0
0
FP6
0
FP5
0
FP4
0
FP3
0
FP2
0
0
Default value
FP [6:0]: Sets the number of lines for a front porch period (a blank period
following the end of display).
BP [6:0]: Sets the number of lines for a back porch period (a blank period
made before the beginning of display).
FP[6:0]
BP[6:0]
Porch Lines
7’h00
7’h01
7’h02
7’h03
7’h04
7’h05
7’h06
7’h07
7’h08
7’h09
7’h0A
7’h0B
:
Setting Prohibited
Setting Prohibited
2 lines
Note:IN 8080 interface operation mode, BP>=2 lines, FP>=2 lines
In external display interface operation, a back porch (BP) period starts on
the falling edge of the FMARK signal and the display operation starts after
the back porch period. A blank period will start after a front porch (FP)
period and it will continue until next FMARK input is detected.
3 lines
4 lines
5 lines
6 lines
Back Porch
Display Area
Front Porch
7 lines
8 lines
9 lines
Description
10 lines
11 lines
:
125 lines
126 lines
127 lines
7’h7D
7’h7E
7’h7F
Note:The output timing to the LCD is delayed by
2 lines period from the input FMARK signal.
Ver. 1.7
51
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
