參數(shù)資料
型號(hào)： HD66420TA0
廠商： Hitachi,Ltd.
英文描述： LCD Display Driver
中文描述： 液晶顯示驅(qū)動(dòng)程序
文件頁(yè)數(shù)： 44/52頁(yè)
文件大?。?/td> 167K
代理商： HD66420TA0
HD66420
44
Y Address Register (R3):
The Y address register (figure 29) designates the Y address of the display RAM
to be accessed by the MPU. The set value must range from H’00 to H’40; setting a greater value is ignored.
The set address is automatically incremented each time the display RAM is accessed; it is not necessary to
update the address each time. Data bit 7 is unused; it should be set to 0 when written to.
Data bit
Set value
7
6
5
4
3
2
1
0
WLS
GRAY DTY1 DTY0
INC
BLK
BIS0
BIS1
Figure 27 Control Register 2 (R1)
Data bit
Set value
7
6
5
4
3
2
1
0
XA5
XA4
XA3
XA2
XA1
XA0
Figure 28 X address Register (R2)
Data bit
Set value
7
6
5
4
3
2
1
0
YA6
YA5
YA4
YA3
YA2
YA1
YA0
Figure 29 Y address Register (R3)
Display Memory Access Register (R4):
The display memory access register (figure 30) is used to access
the display RAM. If this register is write-accessed, data is directly written to the display RAM. If this
register is read-accessed, data is first latched to this register from the display RAM and sent out to the data
bus on the next read; therefore, a dummy read access is necessary after setting the display RAM address.
Display Start Raster Register (R5):
The display start raster register (figure 31) designates the raster to be
displayed at the top of the LCD panel. Varying the set value scrolls the display vertically.
The set value must be one less than the actual top raster and less than the duty ratio. If the value is set
outside these ranges, data may not be displayed correctly. Data bits 7 is unused; they should be set to 0
when written to.
Blink Start Raster Register (R6):
The blink start raster register (figure 32) designates the top raster in the
area to be blinked. The set value must be one less than the actual top raster and less than the duty ratio. If
the value is set outside these ranges, operations may not be correct. Data bits 7 is unused; they should be set
to 0 when written to.
Blink End Raster Register (R7):
The blink end register (figure 33) designates the bottom raster in the area
to be blinked. The area to be blinked is designated by the blink registers, blink start raster register, and
blink end raster register. The set value must be one less than the actual bottom raster and less than the duty
ratio.
相關(guān)PDF資料
PDF描述
HD66421 (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)
HD66421TB0 (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)
HD66503 240-Channel Common Driver with Internal LCD Timing Circuit(帶內(nèi)部LCD定時(shí)電路的240通道驅(qū)動(dòng)器)
HD66520T 160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM(點(diǎn)陣圖形LCD160通道驅(qū)動(dòng)器)
HD66522 160-Channel Column Driver with Internal Bit-Map RAM for Reflective Color Display and Grayscale Display(點(diǎn)陣圖形LCD160通道驅(qū)動(dòng)器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66421 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:(RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)
HD66421TB0 制造商:Renesas Electronics Corporation 功能描述:
HD66503 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66520 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
HD66520T 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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