參數(shù)資料
型號(hào): 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(dòng)器)
中文描述: 低功耗點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器(圖形液晶顯示控制器/驅(qū)動(dòng)器)
文件頁(yè)數(shù): 68/81頁(yè)
文件大小: 426K
代理商: HD66705U
HD66705U
68
Standby Mode
Setting the standby mode bit (STB) to 1 puts the
HD66705U
in standby mode, where the device stops
completely, halting all internal operations including the R-C oscillator, thus further reducing current
consumption compared to that in sleep mode. 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, COMS1/2) pins output the V
CC
level, resulting in no display. If the AMP bit
is set to 0 in standby mode, the LCD drive power supply can be turned off.
Annunciators can be displayed simply by supplying an approximately 40-Hz alternating signal for the LCD
drive signals to the EXM pin externally. If annunciator display is unnecessary during standby mode, the
EXM pin must be fixed to the V
CC
or GND level and the annunciator display-on bit (DA) set to 0.
During standby mode, no instructions can be accepted other than those for annunciator display and the
start-oscillator instruction. To cancel standby mode, issue the start-oscillator instruction to stabilize R-C
oscillation before setting the STB bit to 0.
Figure 45 shows the procedure for setting and cancelling standby mode.
Turn off the LCD power supply: AMP = 0
Only for annunciator display;
set the DA bit to 0 when
annunciator display is not necessary.
Set standby mode: STB = 1
Supply an external alternating signal to the EXM pin
Issue the start-oscillator instruction
Wait at least 10 ms
Cancel standby mode: STB = 0
Turn on the LCD drive power supply: AMP = 1
Standby mode (only annunciator display is available)
Figure 45 Procedure for Setting and Cancelling Standby Mode
相關(guān)PDF資料
PDF描述
HD66710 (Dot Matrix Liquid Crystal Display Controller/Driver)
HD66710A00FS 16 AMP SPDT MINIATURE POWER RELAY
HD66710A00TF (Dot Matrix Liquid Crystal Display Controller/Driver)
HD66712U Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
HD66712 Dot-Matrix Liquid Crystal Display Controller/Driver
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: