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參數(shù)資料
| 型號： | PCF8535 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 65 x 133 pixel matrix driver |
| 中文描述： | 65 × 133像素矩陣驅動程序 |
| 文件頁數(shù)： | 25/52頁 |
| 文件大?。?/td> | 1765K |
| 代理商： | PCF8535 |
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1999 Aug 24
25
Philips Semiconductors
Objective specification
65
×
133 pixel matrix driver
PCF8535
7.16.2.5
Set X address
The X address is used as a pointer to the RAM for RAM
writing. The range of X is 0 to 127 (7FH) and may be
extended by the XM
0
bit. The combined value of XM
0
and
X address directly corresponds to the display column
number when MX = 0 and corresponds to the inverse
display column number when MX = 1; see Table 14.
Table 14
X address pointer
7.16.3
D
ISPLAY SETTING COMMAND PAGE
7.16.3.1
Display control
The D and E bits set the display mode as given in
Table 15.
Table 15
Display control
7.16.3.2
External display control
Mirror X and mirror Y have the effect of flipping the display
left to right or top to bottom respectively. MX works by
changing the order data that is written into the RAM.
As such, the effects of toggling MX will only be seen after
data is written into the RAM. MY works by reversing the
order that column data is accessed relative to the row
outputs. The effect of toggling MY will be seen
immediately. The behaviour of both of these bits is further
described in Section 7.15.
7.16.3.3
Bias system
BS[2:0] sets the bias system; see Section 7.10.
7.16.3.4
Display size
Physically large displays require stronger drivers. Bit IB
enables the user to select a stronger driving mode and
should be used if suitable display quality can not be
achieved with the default setting.
7.16.3.5
Multiplex rate
M[2:0] sets the multiplex rate; see Section 7.9.
7.16.4
HV-
GEN COMMAND PAGE
7.16.4.1
HV-gen control
PRS
Programmable charge pump range select. This bit defines
whether the programmed voltage for V
OP
is in the low or
the high range. The behaviour of this bit is further
described in Section 7.13.
HVE
High voltage generator enable. When set to logic 0, the
charge pump is disabled. When set to logic 1, the charge
pump is enabled.
7.16.4.2
HV-gen stages
S[1:0] set the multiplication factor of the charge pump
ranging from times 2 to times 5. The behaviour of these
bits is further described in Section 7.14.
7.16.4.3
Temperature coefficients
TC[2:0] set the required temperature coefficient.
The behaviour of these bits is further described in
Section 7.12.
7.16.4.4
Temperature measurement control
The SM bit is used to initiate a temperature measurement.
The SM bit is automatically cleared at the end of the
measurement. The behaviour of this bit is further
described in Section 7.11.
7.16.4.5
V
LCD
control
V
OP
[6:0] sets the required operating voltage for the
display.
XM
0
, X[6:0]
ADDRESSED
COLUMN, MX = 0
ADDRESSED
COLUMN, MX = 1
0
1
2
3
:
C0
C1
C2
C3
:
C129
C130
C131
C132
C132
C131
C130
C129
:
C3
C2
C1
C0
129
130
131
132
D
E
MODE
0
1
0
1
0
0
1
1
display blank
normal mode
all display segments on
inverse video
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