PEDL9044-03
1
Semiconductor
ML9044-xxA/xxB
LCD Drive Waveforms
The COM and SEG waveforms (AC signal waveforms for display) vary according to the duty (1/9, 1/12 and 1/17
duties). See 1) to 3) below.
The relationship between the duty ratio and the frame frequency is as follows:
Duty ratio
1/9
Frame Frequency
75.0 Hz
1/12
56.3 Hz
1/17
79.4 Hz
Note:
At an oscillation frequency (OSC) of 270 kHz
(1) Driving the LCD of one 24-character line under the conditions of the 1-line display mode and the character
font of 5 × 7 dots
(1/9 duty, AS = 0, CSR = L, SSR = H)
COM1
Character
COM8
COM9
Cursor
Arbitrator
SEG120
ML9044
SEG1
•
COM10 to COM17 output Display-OFF common signals.
(1/9 duty, AS = 1, CSR = L, SSR = H)
COM1
COM2
Arbitrator
Character
Cursor
COM9
SEG120
ML9044
SEG1
•
COM10 to COM17 output Display-OFF common signals.
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