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7220 Datasheet(PDF) 99 Page - Renesas Technology Corp |
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7220 Datasheet(HTML) 99 Page - Renesas Technology Corp |
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99 / 303 page  2-72 7220 Group User’s Manual FUNCTIONAL DESCRIPTION 2.11 CRT display function Fig. 2.11.2 CRT display circuit block diagram CRT control register (Address 00EA16) Vertical position registers (Addresses 00E116, 00E216) Character size register (Address 00E416) Horizontal position register (Address 00E016) Border selection register (Address 00E516) Display oscillation circuit OSC1 OSC2 Display position control circuit HSYNC VSYNC Display control circuit RAM for display 10 bits ! 24 characters ! 2 lines Color registers (Addresses 00E616 to 00E916) CRT port control register (Address 00EC16) Data bus ROM for display 12 bits ! 16 dots ! 256 characters Shift register 12 bits Shift register 12 bits Output circuit R G B OUT1 OUT2 |
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