參數(shù)資料
型號(hào)： HD66421
廠商： Hitachi,Ltd.
英文描述： (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)
中文描述： （內(nèi)存提供160通道4級(jí)灰度的點(diǎn)陣圖形液晶顯示驅(qū)動(dòng)程序）
文件頁(yè)數(shù)： 37/46頁(yè)
文件大?。?/td> 201K
代理商： HD66421
Preliminary
Rev. 1.1E '99.02.10
HD66421
Control Register 2 (R1):
Control register 2
(figure 34) controls general operations of the
HD66421. Each bit has its own function as
described below.
BIS1, BIS0 bits
BIS1, 0 = (1, 1): 1/8 LCD drive levels bias ratio
BIS1, 0 = (1, 0): 1/9 LCD drive levels bias ratio
BIS1, 0 = (0, 1): 1/10 LCD drive levels bias ratio
BIS1, 0 = (0, 0): 1/11 LCD drive levels bias ratio
WLS bit
WLS = l: A word length is 6-bits
WLS = 0: A word length is 8-bits
GRAY bit
GRAY = l : 4-levels of gray scale are fixed
GRAY = 0: 4-levels of gray scale are selected
from 32-levels
DTY1,DTY0 bits
DTY1, 0 = (1, 1): 1/8 display duty cycle; partial
display mode
DTY1, 0 = (1, 0): 1/64 display duty cycle
DTY1, 0 = (0, 1): 1/80 display duty cycle
DTY1, 0 = (0, 0): 1/100 display duty cycle
INC bit
I NC = l: X address is incremented for each access
INC = 0: Y address is incremented for each access
BLK bit
BLK = 1: Blink function is used
BLK = 0: Blink function is not used
The blink counter is reset when the BLK bit is set
to 0. It starts counting and at the same time
initiates blinking when the BLK bit is set to l.
X Address Register (R2):
The X address register
(figure 35) designates the X address of the
display RAM to be accessed by the MPU. The set
value must range from H'00 to H'27 in the case of
8-bit a word or range from H'00 to H'35 in the
case of 6-bit a word; 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 bits 7 and 6 are unused; they
should be set to 0 when written to. When you use
monochrome display, the set value must range the
even number from H'00 to H'26 in the case of
8-bit a word or range from H'00 to H'34 in the
case of 6-bit a word.
Y Address Register (R3):
The Y address register
(figure 36) 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
Figure 34 Control Register 2 (R1)
WLS
GRAY DTY1 DTY0
INC
BLK
Data bit
Set value
7
6
5
4
3
2
1
0
Figure 35 X address Register (R2)
XA5
Data bit
Set value
7
6
5
4
3
2
1
0
Figure 36 Y address Register (R3)
YA6
XA4
XA3
XA2
XA1
XA0
YA5
YA4
YA3
YA2
YA1
YA0
BIS0
BIS1
37
相關(guān)PDF資料
PDF描述
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)
HD66523R 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)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
HD66520TA0 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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