參數(shù)資料
型號: PCF8833
廠商: NXP Semiconductors N.V.
英文描述: STN RGB - 132 X 132 X 3 driver
中文描述: 超扭曲的RGB - 132 × 132 × 3驅(qū)動程序
文件頁數(shù): 25/112頁
文件大小: 469K
代理商: PCF8833
2003 Feb 14
25
Philips Semiconductors
Objective specification
STN RGB - 132
×
132
×
3 driver
PCF8833
6.2.16
S
ET CONTRAST
Using the Set contrast command (SETCON) the V
LCD
voltage and the contrast of the LCD can be adjusted. The influence
of the VCON[6:0] register on the V
LCD
programming is explained in Section 6.2.31. The VCON[6:0] is a twos complement
number; see Table 26. An overview over the complete programming range of V
LCD
can be found in Section 15.1.
Table 25
Set contrast register bits
Table 26
Possible VCON values
6.2.17
D
ISPLAY OFF
The Display off command (DISPOFF) connects all rows and columns to V
SS1
, i.e. all the pixels have a voltage of 0 V.
Since the reset state of the PCF8833 is Sleep_IN (see Section 6.2.8) the display will be in the off state after a reset.
The DISPOFF command can be switched off by sending the Display on command (DISPON); see Section 6.2.18.
Figure 7 shows the effects of the combination of commands BSTRON and BSTROFF with DISPON and DISPOFF.
Table 27
Display off register bits
6.2.18
D
ISPLAY ON
Using the Display on command (DISPON) the rows and columns are driven according to the current display data RAM
content and according to the display timing and settings.
The DISPON command is used to exit the DISPOFF state; see Section 6.2.17.
Figure 4 gives additional information on the effect of the DISPON/DISPOFF command. Figure 7 shows the effects of the
combination of commands BSTRON and BSTROFF with DISPON and DISPOFF.
D/C
7
6
5
4
3
2
1
0
DEFAULT
0
1
0
X
0
1
0
0
1
0
1
25H
00H
VCON
6
VCON
5
VCON
4
VCON
3
VCON
2
VCON
1
VCON
0
VCON[6:0]
DECIMAL EQUIVALENT
V
LCD
OFFSET
2520 mV
2480 mV
2440 mV
:
80 mV
40 mV
0 mV
40 mV
80 mV
:
2480 mV
2520 mV
2560 mV
0111111
0111110
0111101
:
0000010
0000001
0000000
1111111
1111110
:
1000010
1000001
1000000
63
62
61
:
2
1
0
1
2
:
62
63
64
D/C
7
6
5
4
3
2
1
0
DEFAULT
0
0
0
1
0
1
0
0
0
28H
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