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M66271FP 数据表(PDF) 21 Page - Renesas Technology Corp

部件名 M66271FP
功能描述  Operation Panel Controller
PDF  28 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

M66271FP 数据表(HTML) 21 Page - Renesas Technology Corp

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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
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 PANEL
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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