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KS0073 Datasheet(PDF) 49 Page - Samsung semiconductor |
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KS0073 Datasheet(HTML) 49 Page - Samsung semiconductor |
49 / 78 page 34COM/60SEG DRIVER & CONTROLLER FOR DOT MATRIX LCD S6A0073 49 INTERFACE WITH MPU IN BUS MODE 1) Interface with 8-bits MPU If 8-bits MPU is used, S6A0073 can connect directly with that. In this case, port E, RS, R/W and DB0 to DB7 need to interface each other. Example of timing sequence is shown below. RS R/W E Internal signal DB7 Internal Operation DATA Busy Busy No Busy DATA Instruction Busy Flag Check Instruction Busy Flag Check Busy Flag Check Figure 17. Example of 8-bit Bus Mode Timing Sequence 2) Interface with 4-bits MPU If 4-bits MPU is used, S6A0073 can connect directly with this. In this case, E, RS, R/W and DB4 to DB7 need to interface each other. The transfer is performed by twice. Example of timing sequence is shown below. RS R/W E Internal signal DB7 Internal Operation D7 Busy AC3 No Busy Instruction Busy Flag Check Instruction Busy Flag Check D3 AC3 D7 D3 Fig 18. Example of 4-bit Bus Mode Timing Sequence |
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