參數(shù)資料
型號(hào): PCA84C646
廠商: NXP Semiconductors N.V.
英文描述: Microcontrollers for TV tuning control and OSD applications(應(yīng)用于TV調(diào)頻和OSD的微控制器)
中文描述: 微控制器的控制和調(diào)整(應(yīng)用于電視調(diào)頻和OSD的微控制器應(yīng)用的電視OSD)
文件頁數(shù): 54/72頁
文件大?。?/td> 564K
代理商: PCA84C646
1995 Jun 15
54
Philips Semiconductors
Preliminary specification
Microcontrollers for TV tuning
control and OSD applications
PCA84C646; PCA84C846
Fig.43 Combination of two characters in vertical direction to formulate a new pattern;
contents Row 18 (upper cell) equal to contents of Row 1(lower cell).
0
1
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0 1 2 3 4 5 6 7 8 9 10 11
0 1 2 3 4 5 6 7 8 9 10 11
0
1
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Cell boundary
0 1 2 3 4 5 6 7 8 9 10 11
0
1
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18
0
1
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18
0 1 2 3 4 5 6 7 8 9 10 11
MED225
Character pattern displayed on the screen
Character pattern stored in the ROM/RAM
(2)
(1)
(1) The bit pattern of Row 18 of the upper character is equal to that of Row 0 of the lower character.
(2) Due to the situation of (1), in the North-west shadowing mode a gap in the shadow is avoided.
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