參數(shù)資料
型號(hào): M66271FP
元件分類: 顯示控制器
英文描述: 320 X 240 DOTS DOT MAT LCD DSPL CTLR, PQFP80
封裝: QFP-80
文件頁(yè)數(shù): 16/30頁(yè)
文件大小: 309K
代理商: M66271FP
M66271FP
REJ03F0267-0200 Rev.2.00 Mar 18, 2008
Page 21 of 27
Relation between Address of VRAM and LCD Display
LCD
PANEL
LCD
PANEL
0000H 0001H
0000H
0001H
0000H 0001H
1000H
257EH
257FH
0000H
0001H
1001H
VRAM
9600-byte
VRAM
9600-byte
1001H
1000H
257EH 257FH
CR 8 dots
257EH 257FH
SLT line
VRAM address mapping on the LCD PANEL
Remark) VRAM address counter return to "0000H",
after count up address to "257FH".
ex. 2) When display start address = 1000H
ex. 1) When display start address = 0000H
Figure 7 Relation between Address of VRAM and LCD Display
Relation between VRAM Data, LCD Display and Display Start Address Register
D15
1
D14
0
D13
1
D12
0
D3
1
D2
1
D1
1
D0
1
D3
0
D2
1
D1
0
D0
1
D7
0
D6
0
D5
0
D4
0
D7
1
D6
0
D5
1
D4
0
D11
0
D10
1
D9
0
D8
1
UD3
UD2
UD1
UD0
UD3
UD2
UD1
UD0
UD3
UD2
UD1
UD0
UD3
UD2
UD1
UD0
UD3
UD2
UD1
UD0
UD3
UD2
UD1
UD0
LCD PANEL
LCD display data
Data of one address for VRAM
D15
1
D14
0
D13
1
D12
0
D3
1
D2
1
D1
1
D0
1
D7
0
D6
0
D5
0
D4
0
D11
0
D10
1
D9
0
D8
1
UD3
UD2
UD1
UD0
UD3
UD2
UD1
UD0
LCD display data
Data of one address for VRAM
LCD display data
Data of one address for VRAM
(1) When select 8-bit MPU
(2) When select 16-bit MPU (SAL: D0 = "0")
(3) When select 16-bit MPU (SAL: D0 = "1")
Invalid display data
Only upper byte data of the display start address is invalid data (cut off data).
Output the display data normally from next address of the display start address.
Figure 8 Relation between VRAM Data, LCD Display and Display Start Address Register
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