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參數(shù)資料
| 型號： | KS0759 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD |
| 中文描述： | 81的COM / 128賽格驅(qū)動 |
| 文件頁數(shù)： | 24/67頁 |
| 文件大?。?/td> | 580K |
| 代理商： | KS0759 |
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81 COM / 128 SEG DRIVER & CONTROLLER FOR STN LCD PRELIMINARY SPEC. VER. 0.2 KS0759
20
LCD DISPLAY CIRCUITS
Oscillator
This is completely on-chip Oscillator and its frequency is nearly independent of V
DD
. This Oscillator signal is used
in the voltage converter and display timing generation circuit.
Display Timing Generator Circuit
This circuit generates some signals to be used for displaying LCD. The display clock, CL(internal), generated by
oscillation clock, generates the clock for the line counter and the signal for the display data latch. The line address
of on-chip RAM is generated in synchronization with the display clock and the display data latch circuit latches
the 128-bit display data in synchronization with the display clock. The display data, which is read to the LCD
driver, is completely independent of the access to the display data RAM from the microprocessor. The display
clock generates an LCD AC signal (M) which enables the LCD driver to make a AC drive waveform, and also
generates an internal common timing signal and start signal to the common driver. The frame signal or the line
signal changes the M by setting internal instruction. Driving waveform and internal timing signal are shown in
Figure 11.
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