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參數(shù)資料
| 型號(hào)： | 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(dòng)器) |
| 中文描述： | 低功耗點(diǎn)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(dòng)器驅(qū)動(dòng)程序） |
| 文件頁(yè)數(shù)： | 84/98頁(yè) |
| 文件大?。?/td> | 1576K |
| 代理商： | HD66727 |
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HD66727
84
HD66727
V
CC
LED0
LED1
LED2
PORT0
PORT1
PORT2
LED
display
Back
light
GND
Figure 48 LED Driving Control Circuit Examples
Partial-Display-Off Function
The HD66727 can program the number of display lines (NL bits), divide the internal operating frequency
by four (OSC bit), and adjust the display contrast (CT bits). Combining these functions, the HD66727 can
turn off the second and/or subsequent lines, displaying only the characters in the first line to reduce internal
current consumption (partial-display-off function). This function is suitable for calendar or time display,
which needs to be continuous during system standby with minimal current consumption. Here, the second
to fourth non-displayed lines are constantly driven by the deselection level voltage, thus turning off the
LCD for the lines.
Note that internal clock frequency is reduced to a quarter, quadrupling execution time of each instruction;
MPU data transfer rate must be appropriately adjusted. Moreover, as being affected by the NL1 bit and the
OSC1 bit, the key-scan cycle for partial-display-off is not the same as that for normal display. Adjust the
key-scan cycle by the KF1 and KF0 bits.
Table 38 lists partial-display-off function specifications and Figure 49 shows a sample display using the
partial-display-off function
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PDF描述 |
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| HD66728 | 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點(diǎn)圖形LCD控制器) |
| HD66730 | Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器) |
| HD66731 | Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)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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