ML9042 View Datasheet(PDF) - LAPIS Semiconductor Co., Ltd.
Part Name
Description
MFG CO.
'ML9042' PDF : 58 Pages View PDF
LAPIS Semiconductor
FEDL9042-01
ML9042-xx
LCD Display Circuit (COM1 to COM17, SEG1 to SEG100, SSR and CSR)
The ML9042 has 17 common signal outputs and 100 segment signal outputs to display 20 characters (in the 1-line
display mode) or 40 characters (in the 2-line display mode).
The character pattern is converted into serial data and transferred in series through the shift register.
The transfer direction of serial data is determined by the SSR bit. The shift direction of common signals is
determined by the CSR bit. The following tables show the transfer and shift directions:
SSR bit
L
H
ABE bit
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
CSR bit
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
Transfer direction
SEG1 SEG100
SEG100 SEG1
duty AS bit
1/8
L
1/8
H
1/16
L
1/16
H
1/8
L
1/8
H
1/16
L
1/16
H
1/9
L
1/9
H
1/17
L
1/17
H
1/9
L
1/9
H
1/17
L
1/17
H
Shift Direction
COM1COM8
COM1COM8
COM1COM16
COM1COM16
COM8COM1
COM8COM1
COM16COM1
COM16COM1
COM1COM9
COM1COM9
COM1COM17
COM1COM17
COM9COM1
COM9COM1
COM17COM1
COM17COM1
Arbitrator’s common pin
None
None
None
None
None
None
None
None
COM9
COM1
COM17
COM1
COM1
COM9
COM1
COM17
* Refer to the Expansion Instruction Codes section about the ABE bit, SSR bit, CSR bit, and AS bit.
Signals to be input to the SSR bit, CSR bit, ABE bit, and AS bit should be initially determined at power-on and be
kept unchanged.
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