參數(shù)資料
型號: 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級灰度的點(diǎn)陣圖形液晶顯示驅(qū)動程序)
文件頁數(shù): 23/46頁
文件大?。?/td> 201K
代理商: HD66421
Preliminary
Rev. 1.1E '99.02.10
HD66421
Display RAM Reading by LCD Controller:
Data is read by the HD66421 to be displayed
asynchronously with accesses by the MPU.
However, because simultaneous access could
damaging data in the display RAM, the HD66421
internally arbitrates access timing; access by the
MPU usually has priority and so access by the
HD66421 is placed between accesses by the MPU.
Accordingly, an appropriate time must be secured
(see the given electrical characteristics between
two accesses by the MPU).
(a) INC = 0
H'0
H'1
H'27
H'00
H'01
H'7F
H'28
H'35
WLS= 0
WLS= 1
(b) INC = 1, MON= 0
H'0
H'1
H'27
H'00
H'01
H'02
H'63
H'28
H'35
WLS= 0
WLS= 1
Figure 17 Display Address Increment
WLS= 0
WLS= 1
H'63
Valid area
Invalid area
Valid area (WLS= 1)
Invalid area
23
(c) INC = 1, MON= 1
H'0
H'2
H'26
H'00
H'01
H'02
H'63
H'28
H'34
WLS= 0
WLS= 1
WLS= 0
WLS= 1
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HD66421TB0 (RAM-Provided 160 Channel 4-Level Grey Scale Driver for Dot Matrix Graphics LCD)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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