參數(shù)資料
型號(hào)： PCF8811
廠商： NXP Semiconductors N.V.
英文描述： 80 x 128 pixels matrix LCD driver
中文描述： 80 × 128像素矩陣LCD驅(qū)動(dòng)器
文件頁(yè)數(shù)： 32/73頁(yè)
文件大?。?/td> 434K
代理商： PCF8811
2004 May 17
32
Philips Semiconductors
Product specification
80
×
128 pixels matrix LCD driver
PCF8811
13.1.3
S
PECIFIC COMMANDS OF THE EXTENDED COMMAND SET
Table 14
Explanation of symbols
Note
1.
It is strongly recommended to use the p = 4 setting.
BIT
LOGIC 0
LOGIC 1
RESET STATE
V
PR
[7:6] + V
PR
[5:0]
FR[1:0]
TC[2:0]
V
DOR
IC
BRS
programming value of V
LCD
frame-rate frequency
temperature coefficient
horizontal addressing
LSB at top
no Icon row (1/16 to 1/80)
bottom rows are not
mirrored
mux rate driven p value
(automatic)
use internal oscillator
charge pump multiplication factor
00000000
11
(TC2) 010
0
0
0
0
vertical addressing
MSB at top
Icon row (1/16 to 1/80)
bottom rows are mirrored
MP
(1)
p = 4 selected for mux rate
1 : 64 and 1 : 80
use external oscillator
0
EC
S[2:0]
0
100
Table 15
Frame-rate frequency
Table 16
Temperature coefficient
Table 17
Multiplication settings
13.2
Initialization
Reset is accomplished by applying an external reset pulse
(active LOW) at pad RES. When reset occurs within the
specified time, all internal registers are reset, however the
RAM is still undefined. The state after reset is described in
Section 13.3. Pad RES must be
≤
0.3V
DD1
when V
DD1
reaches V
DD(min)
(or higher) within a maximum time t
VHRL
after V
DD1
goes high (see Fig.43).
A reset can also be achieved by sending a reset
command. This command can be used during normal
operation but not to initialize the chip after power-on.
FR[1:0]
FRAME-RATE
FREQUENCY
00
01
10
11
30 Hz
40 Hz
50 Hz
60 Hz
TC[2:0]
TEMPERATURE
COEFFICIENT
000
001
010
011
100
101
110
111
0
1
2
3
4
5
6
7
S[2:0]
DESCRIPTION
2
×
voltage multiplier
3
×
voltage multiplier
4
×
voltage multiplier
5
×
voltage multiplier
4
×
voltage multiplier
5
×
voltage multiplier
6
×
voltage multiplier
7
×
voltage multiplier
000
001
010
011
100
101
110
111
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