參數(shù)資料
型號: HD667B66R
廠商: Hitachi,Ltd.
英文描述: 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors
中文描述: 132 × 176點圖形LCD控制器/驅(qū)動器的65K色
文件頁數(shù): 50/97頁
文件大?。?/td> 681K
代理商: HD667B66R
HD66766R Rev. 1.0-1 / September 2002
50
Window Address Function
When data is written to the on-chip GRAM, a window address-range which is specified by the horizontal
address register (start: HSA7-0, end: HEA7-0) or the vertical address register (start: VSA7-0, end: VEA7-
0) can be written to consecutively.
Data is written to addresses in the direction specified by the AM bit (increment/decrement). When image
data, etc. is being written, data can be written consecutively without thinking a data wrap by doing this.
The window must be specified to be within the GRAM address area described below. Addresses must
be set within the window address.
[Restriction on window address-range settings]
(horizontal direction) “00”H
HSA7-0
HEA7-0
“83”H
(vertical direction) “00”H
VSA7-0
VEA7-0
“AF”H
[Restriction on address settings during the window address]
(RAM address) HSA7-0
AD7-0
HEA7-0
VSA7-0
AD15-8
VEA7-0
Note: In high-speed RAM-write mode, the lower two bits of the address must be set as shown below
according to the value of the ID0 bit.
ID0
=
0: The lower two bits of the address must be set to “11”.
ID0
=
1: The lower two bits of the address must be set to “00”
AF00H
AF83H
0000H
0083H
202FH
212FH
5F10H
5F2FH
2110H
GRAM address map
I/D0=1 (increment)
AM=0 (horizontal writing)
Window address area
2010H
Window address-range specification area
HSA5-0=10H, HSE5-0=2FH
VSA7-0=20H, VEA7-0=5FH
Figure 36 Example of Address Operation in the Window Address Specification
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