PCA84C646 Philips Semiconductors, PCA84C646 Datasheet - Page 54
PCA84C646
Manufacturer Part Number
PCA84C646
Description
Microcontrollers for TV tuning control and OSD applications
Manufacturer
Philips Semiconductors
Datasheet
1.PCA84C646.pdf
(72 pages)
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Philips Semiconductors
1995 Jun 15
Microcontrollers for TV tuning
control and OSD applications
(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.
Fig.43 Combination of two characters in vertical direction to formulate a new pattern;
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18
10
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18
Character pattern stored in the ROM/RAM
0
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9
0
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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
contents Row 18 (upper cell) equal to contents of Row 1(lower cell).
(1)
Cell boundary
54
Character pattern displayed on the screen
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0
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0
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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
PCA84C646; PCA84C846
MED225
Preliminary specification
(2)
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