參數(shù)資料
型號(hào)： ML9044
廠商： OKI SEMICONDUCTOR CO., LTD.
英文描述： DOT MATRIX LCD CONTROLLER DRIVER
中文描述： 點(diǎn)陣LCD控制器驅(qū)動(dòng)
文件頁(yè)數(shù)： 28/55頁(yè)
文件大小： 538K
代理商： ML9044
Semiconductor
ML9044
28/54
Built–in Reset Circuit
The ML9044 is automatically initialized when the power is turned on.
During initialization, the Busy Flag (BF) is “1” and the ML9041 does not accept any instruction
from the CPU (other than the Read BF instruction).
The Busy Flag is “1” for about 15 ms after the V
DD
becomes 2.5 V or higher.
During this initialization, the ML9044 performs the following instructions:
1)
2)
3)
4)
5)
6)
7)
8)
9)
10) Arbitrator = Displayed in the lower line
11) Setting 1FH (hexadecimal) to the Contrast Data
Display clearing
CPU interface data length = 8 bits
1–line LCD display
Font size = 5
￥
7 dots
ADC counting = Increment
Display shifting = None
Display = Off
Cursor = Off
Blinking = Off
(DL = “1”)
(N = “0”)
(F = “0”)
(I/D = “1”)
(S = “0”)
(D = “0”)
(C = “0”)
(B = “0”)
(AS = “0”)
To use the built–in reset circuit, the power supply conditions shown below should be satisfied.
Otherwise, the built–in reset circuit may not work properly. In such a case, initialize the ML9044
with the instructions from the CPU. The use of a battery always requires such initialization from
the CPU. (See “Initial Setting of Instructions”)
Figure 1 Power–on and Power–off Waveform
t
ON
2.5V
0.2V
0.2V
0.2V
t
OFF
0.1ms
￡
t
ON
￡
100ms
1ms
￡
t
OFF
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