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ML9042 Datasheet(PDF) 29 Page - LAPIS Semiconductor Co., Ltd.

Part # ML9042
Description  DOT MATRIX LCD CONTROLLER DRIVER
PDF  58 Pages
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Manufacturer  LAPIS [LAPIS Semiconductor Co., Ltd.]
Direct Link  http://www.lapis-semi.com/
Logo LAPIS - LAPIS Semiconductor Co., Ltd.

ML9042 Datasheet(HTML) 29 Page - LAPIS Semiconductor Co., Ltd.

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Serial Interface Mode
In the Serial I/F Mode, the ML9042 interfaces with the CPU via the RS0/CSB, E/SHTB, RW/SI, and DB0(SO)
pins.
Writing and reading operations are executed in units of 16 bits after the RS0/CSB signal falls down. If the RS0/CSB
signal rises up before the completion of 16-bit unit access, this access is ignored.
When the BF bit is “1”, the ML9042 cannot accept any other instructions. Before inputting a new instruction,
check that the BF bit is “0”. Any access when the BF bit is “1” is ignored.
Data format is LSB-first.
Examples of Access in the Serial I/F Mode
Note 1: Higher 5 bits of each instruction must be input at a “H” level.
Note 2: Lower 8 bits are “don’t care” when the instructions in the READ MODE are set.
Note 3: After one instruction is input, the next instruction must be input after the RS0/CSB pin is pulled at a “H”
level.
1) WRITE MODE
RS0/CSB
E/SHTB
BUSY
RWB/SI
DB(SO)
2) READ MODE
RS0/CSB
E/SHTB
BUSY
RWB/SI
DB(SO)
(Internal operation)
(Internal operation)
12
12
34
56
78
1
13
14
15
16
9
101112
11
11
1
R/
W RS0 RS1
D0
D1
D2
D3
D4
D5
D6
D7
1
3
4
5
6
7
8
9
10111213141516
1
11
11
1
R/
W RS0 RS1
1
D0
D1
D2
D3
D4
D5
D6
D7



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