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 Drive Waveforms
The COM and SEG waveforms (AC signal waveforms for display) vary according to the duty (1/9 and 1/17 duties).
See 1) and 2) below.
The relationship between the duty ratio and the frame frequency is as follows:
Duty ratio
1/8
1/9
1/16
1/17
Frame Frequency
84.4 Hz
75.0 Hz
84.4 Hz
79.4 Hz
Note: At an oscillation frequency (OSC) of 270 kHz
1) COM and SEG Waveforms on 1/9 Duty (ABE = “1”)
COM1 (CSR = “L”, AS = “L”)
COM2 (CSR = “L”, AS = “H”)
COM9 (CSR = “H”, AS = “L”)
COM8 (CSR = “H”, AS = “H”)
(first character line)
COM2 (CSR = “L”, AS = “L”)
COM3 (CSR = “L”, AS = “H”)
COM8 (CSR = “H”, AS = “L”)
COM7 (CSR = “H”, AS = “H”)
(second character line)
CSR=“H”
CSR=“L”
V0
V1
V2, V3B
V4
V5
2 1 9 8 7 6 ··· 3 2 1 9 8 7 6 ··· 3 2 1 9 8
8 9 1 2 3 4 ··· 7 8 9 1 2 3 4 ··· 7 8 9 1 2
1 frame
V0
V1
V2, V3B
V4
V5
COM8 (CSR = “L”, AS = “L”)
COM9 (CSR = “L”, AS = “H”)
COM2 (CSR = “H”, AS = “L”)
COM1 (CSR = “H”, AS = “H”)
(eighth character line)
V0
V1
V2, V3B
V4
V5
COM9 (CSR = “L”, AS = “L”)
COM1 (CSR = “L”, AS = “H”)
COM1 (CSR = “H”, AS = “L”)
COM9 (CSR = “H”, AS = “H”)
(arbitrator line)
V0
V1
V2, V3B
V4
V5
COM10 to
COM17
V0
V1
V2, V3B
V4
V5
SEG
V0
V1
V2, V3B
V4
V5
Display
turning-off
waveform
Display
turning-on
waveform
46/58
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