參數(shù)資料
型號: HD66421TB0
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級灰度的點(diǎn)陣圖形液晶顯示驅(qū)動程序)
文件頁數(shù): 19/46頁
文件大小: 201K
代理商: HD66421TB0
Preliminary
Rev. 1.1E '99.02.10
HD66421
plane 1
plane 0
DSEL
PSEL
Figure 13 Memory Planes in Monochrome Display Mode
H'00
H'01
H'0
H'2
H'26
SEG1
SEG160
H'62
H'63
Y
19
LCD drive signal output
Figure 14 Memory Addresses in Monochrome Display Mode
Monochrome Display Mode
The HD66421 can control monochrome display.
This mode is set when MON is set to 1. Two plane
of display can be selected in this mode using two
bits data for gray scale. One plane can be selected
with PSEL bit for access from the CPU and with
DSEL bit for display. Theses two operations are
independent to each other, thus oneplane can be
rewritten while the other plane is
displayed. This means no flicker during being
rewritten. The address area is mapped to even
address from H'0 to H'26 in monochrome mode
and this address area is the same for both planes.
The plane 0 is accessed when PSEL is cleared to
0 and the plane 1 is selected when PSEL is set to
1. The plane 0 is displayed when DSEL is
cleared to 0 and the plane 1 is displayed when
DSEL is set to 1.
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