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38C3 Datasheet(PDF) 121 Page - Renesas Technology Corp |
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38C3 Datasheet(HTML) 121 Page - Renesas Technology Corp |
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121 / 224 page  2-56 38C3 Group User’s Manual APPLICATION 2.4 LCD controller Figure 2.4.8 shows the relevant registers setting. Fig. 2.4.8 Relevant registers setting SEG Segment output enable register (address 003816) 0 0 0 0 1 1 1 1 Segment output: SEG0–SEG3 LM 1 1/3 bias 4 (use COM0–COM3) LCD mode register (address 003916) Segment output: SEG4–SEG7 Segment output: SEG8–SEG11 Segment output: SEG12–SEG15 I/O port: P10–P13 I/O port: P14–P17 Output port: P30–P33 Output port: P34–P37 1 0 0 0 0 1 1 LCD OFF (after setting data to LCDRAM, turn on) Not used (Always set “0”.) 4 (Note) f(XIN)/8192 (Note) Note: Frame frequency = f(LCDCK)/division ratio f(LCDCK) = count source frequency for LCDCK/LCD circuit division ratio From the above, the frame frequency at f(XIN) = 8 MHz is as follows: Frame frequency = {(8 ! 106/8192)/4}/4 ≅ 61.035 Hz |
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