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(qū)動器)
中文描述： 低功耗點陣液晶顯示控制器/驅(qū)動器（圖形液晶顯示控制器/驅(qū)動器）
文件頁數(shù)： 67/81頁
文件大?。?/td> 426K
代理商： HD66705U
HD66705U
67
Sleep Mode
Setting the sleep mode bit (SLP) to 1 puts the
HD66705U
in sleep mode, where the device halts all the
internal display operations except for annunciator display operations, thus reducing current consumption.
Specifically, character and segment displays, which are controlled by the multiplexing drive method, are
completely halted. Here, all the SEG (SEG1 to SEG60) and COM (COM1 to COM16, COMS”1/2) pins
output the V
CC
level, resulting in no display. If the AMP bit is set to 0 in sleep mode, the LCD drive power
supply can be turned off, reducing the total current consumption of the LCD module.
Annunciators can be normally displayed in sleep mode. Since they are driven at logic operating power
supply voltage (V
CC
– AGND), they are available even if the LCD power supply is turned off (AMP = 0).
This function allows time and alarm marker indication during system standby with reduced current
consumption.
During sleep mode, no instructions can be accepted for character/segment display and neither DDRAM,
CGRAM, nor SEGRAM can be accessed.
Table 27 compares the functions of sleep mode and standby mode.
Table 27
Comparison of Sleep Mode and Standby Mode
Function Item
Sleep Mode (SLP = 1)
Standby Mode (STB = 1)
Character display
Turned off
Turned off
Segment display
Turned off
Turned off
Annunciator display
Can be turned on
Can be turned on when an alternating
signal is supplied to the EXM pin
R-C oscillation
Normally operates
Halted
相關(guān)PDF資料
PDF描述
HD66710 (Dot Matrix Liquid Crystal Display Controller/Driver)
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HD66710A00TF (Dot Matrix Liquid Crystal Display Controller/Driver)
HD66712U Dot-Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器)
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相關(guān)代理商/技術(shù)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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