參數(shù)資料
型號： HD66727
廠商： Hitachi,Ltd.
英文描述： Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動器)
中文描述： 低功耗點陣液晶顯示控制器/鍵掃描功能（帶鍵掃描功能的圖形液晶顯示控制器/驅(qū)動器驅(qū)動程序）
文件頁數(shù)： 58/98頁
文件大?。?/td> 1576K
代理商： HD66727
HD66727
58
Standby mode
Mask interrupts (IRE = 0)
Wait 10 ms or longer (MPU)
Start R-C oscillator (HD66727)
Clear standby mode (STB = 0)
Turn off LCD power (AMP = 0)
Set standby mode (STB = 1)
Generate interrupt (HD66727
Read key-scanned data
Enable interrupts (IRE = 1)
Turn off LCD power (AMP = 0)
Set sleep mode (SLP = 1)
Key input (key
→
HD66727)
Generate interrupt (HD66727
→
MPU)
Sleep mode
Mask interrupts (IRE = 0)
Read key-scanned data
Enable interrupts (IRE = 1)
→
HD66727)
Key input (key
→
MPU)
(1) Sleep Mode
(2) Standby Mode
Figure 30 Key Scan Interrupt Processing Flow in Sleep and Standby Modes
Oscillator Circuit
The HD66727 can either be supplied with operating clock pulses externally (external clock mode) or
oscillate using an internal R-C oscillator and an external oscillator-resistor (internal oscillation mode), as
shown in Figure 31. An appropriate oscillator-resistor must be used to obtain the optimum clock frequency
according to the number of display lines (Table 29). Instruction execution times change in proportion to the
operating clock frequency or R-C oscillation frequency; MPU data transfer rate must be appropriately
adjusted (see Table 23, Instruction List). Figure 32 shows a sample LCD drive output waveform, where 4-
lines are displayed with 1/34 multiplexing duty ratio.
相關(guān)PDF資料
PDF描述
HD66728 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點圖形LCD控制器)
HD66730 Dot-Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器)
HD66731 Dot-Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅(qū)動器)
HD66731A00TB0L 122 x 32 pixel format, Compact LCD size
HD66731A00TA0L Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66727A03 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66727A03BP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66727A03TA0 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66727A03TA0L 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
HD66727A04 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
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