參數(shù)資料
型號： HD66705U
廠商： Hitachi,Ltd.
英文描述： Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver(圖形LCD控制器/驅動器)
中文描述： 低功耗點陣液晶顯示控制器/驅動器（圖形液晶顯示控制器/驅動器）
文件頁數(shù)： 15/81頁
文件大?。?/td> 426K
代理商： HD66705U
HD66705U
15
Cursor/Blink Control Circuit
The cursor/blink (or white-black inversion) control is used to produce a cursor or a flashing area on the
display at a position corresponding to the location stored in the address counter (AC).
For example (Figure 2), when the address counter is 08H, a cursor is displayed at a position corresponding
to DDRAM address (08)H.
Multiplexing Liquid Crystal Display Driver Circuit
The multiplexing liquid crystal display driver circuit consists of 18 common signal drivers (COM1 to
COM16, COMS1, COMS2) and 60 segment signal drivers (SEG1 to SEG60). When the number of lines
are selected by a program, the required common signal drivers automatically output drive waveforms,
while the other common signal drivers continue to output deselection waveforms.
Character pattern data is sent serially through a 60-bit shift register and latched when all needed data has
arrived. The latched data then enables the segment signal drivers to generate drive waveform outputs.
The shift direction of 60-bit data can be selected by the SFT pin; select the direction appropriate to the
device mounting configuration.
When multiplexing drive is not used, or during standby or sleep mode, all common and segment signal
drivers output the V
CC
level, halting display.
Annunciator Driver Circuit
The static annunciator drivers, which are specially used for displaying icons and marks, consists of 1
common signal driver (ACOM) and 10 segment signal drivers (ASEG1 to ASEG10). Since this driver
circuit operates at the logic operating voltage (V
CC
–AGND), the LCD drive power supply circuit is not
necessary, and low-power consumption can be achieved. It is suitable for mark indication during system
standby because of its drive capability during standby and sleep modes. When multiplexing drive is not
used, or during standby or sleep mode, all common and segment signal drivers output the V
CC
level, halting
display.
Booster
The booster doubles or triples a voltage input to the Vci pin. With this function, both the internal logic units
and LCD drivers can be controlled with a single power supply.
Oscillator
The
HD66705U
can provide R-C oscillation simply by adding an external oscillation resistor between the
OSC1 and OSC2 pins. The appropriate oscillation frequency for operating voltage, display size, and frame
frequency can be obtained by adjusting the external-resistor value. Clock pulses can also be supplied
externally. Since R-C oscillation is halted during standby mode, current consumption can be reduced.
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HD66710 (Dot Matrix Liquid Crystal Display Controller/Driver)
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HD66710A00TF (Dot Matrix Liquid Crystal Display Controller/Driver)
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相關代理商/技術參數(shù)
參數(shù)描述
HD66710 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:(Dot Matrix Liquid Crystal Display Controller/Driver)
HD66710A00FS 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:(Dot Matrix Liquid Crystal Display Controller/Driver)
HD66710A00TF 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:(Dot Matrix Liquid Crystal Display Controller/Driver)
HD66712 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver
HD66712A00TA0 制造商:Renesas Electronics Corporation 功能描述:
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