ML9042-XX View Datasheet(PDF) - LAPIS Semiconductor Co., Ltd.
Part Name
Description
MFG CO.
'ML9042-XX' PDF : 58 Pages View PDF
LAPIS Semiconductor
FEDL9042-01
ML9042-xx
Expansion Instruction Codes
The busy status of the ML9042 is rather longer than the cycle time of the CPU, since the internal processing of the
ML9042 starts at a timing which does not affect the display on the LCD. In the busy status (Busy Flag is “1”), the
ML9042 executes the Busy Flag Read instruction only. Therefore, the CPU should ensure that the Busy Flag is
“0” before sending an expansion instruction code to the ML9042.
1) Arbitrator Display Line Set
Expansion instruction code:
RS1 RS0 R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
0
0
0
0
0
1
AS
This expansion instruction code sets the Arbitrator display line. The relationship between the status of this bit
and the common outputs is as follows:
For display examples, refer to LCD Drive Waveforms section.
ABE bit
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
Note:
CSR bit
duty
AS bit
Shift direction
Arbitrator’s common pin
L
1/8
L
COM1COM8
None
L
1/8
H
COM1COM8
None
L
1/16
L
COM1COM16
None
L
1/16
H
COM1COM16
None
H
1/8
L
COM8COM1
None
H
1/8
H
COM8COM1
None
H
1/16
L
COM16COM1
None
H
1/16
H
COM16COM1
None
L
1/9
L
COM1COM9
COM9
L
1/9
H
COM1COM9
COM1
L
1/17
L
COM1COM17
COM17
L
1/17
H
COM1COM17
COM1
H
1/9
L
COM9COM1
COM1
H
1/9
H
COM9COM1
COM9
H
1/17
L
COM17COM1
COM1
H
1/17
H
COM17COM1
COM17
The execution time of this instruction is 37 s at an oscillation frequency (OSC) of
270 kHz.
2) ABRAM Address Setting
Expansion instruction code:
RS1 RS0 R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
1
0
1
1
H4
H3
H2
H1
H0
This instruction sets the ABRAM address to the data represented by the bits H4 to H0 (binary).
The ABRAM addresses are valid until CGRAM or DDRAM addresses are set.
The CPU writes or reads the Display-ON data starting from the one represented by the ABRAM address bits H4
to H0 set in the instruction code at that time.
When the ABRAM address represented by bits H4 to H0 (binary) is in the range “00” to “13” in hexadecimal,
data is output to the LCD as the arbitrator.
Note: The execution time of this instruction is 37 s at an oscillation frequency (OSC) of 270 kHz.
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