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H838532H データシート(PDF) 388 Page - Renesas Technology Corp |
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H838532H データシート(HTML) 388 Page - Renesas Technology Corp |
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388 / 508 page  Section 13 LCD Controller/Driver Rev. 1.00 May 30, 2008 Page 368 of 484 REJ09B0436-0100 13.2 Register Descriptions 13.2.1 LCD Port Control Register (LPCR) Bit Initial value Read/Write 7 DTS1 0 R/W 6 DTS0 0 R/W 5 CMX 0 R/W 4 — 0 W 3 SGS3 0 R/W 0 SGS0 0 R/W 2 SGS2 0 R/W 1 SGS1 0 R/W LPCR is an 8-bit read/write register which selects the duty cycle and LCD driver pin functions. LPCR is initialized to H'00 upon reset. Bits 7 to 5: Duty cycle select 1 and 0 (DTS1, DTS0), common function select (CMX) The combination of DTS1 and DTS0 selects static, 1/2, 1/3, or 1/4 duty. CMX specifies whether or not the same waveform is to be output from multiple pins to increase the common drive power when not all common pins are used because of the duty setting. Bit 7 DTS1 Bit 6 DTS0 Bit 5 CMX Duty Cycle Common Drivers Notes 0 0 0 Static COM 1 (initial value) Do not use COM 4, COM3, and COM 2. 1 COM 4 to COM1 COM 4, COM3, and COM2 output the same waveform as COM 1. 0 1 0 1/2 duty COM 2 to COM1 Do not use COM 4 and COM3. 1 COM 4 to COM1 COM 4 outputs the same waveform as COM 3, and COM2 outputs the same waveform as COM 1. 1 0 0 1/3 duty COM 3 to COM1 Do not use COM 4. 1 COM 4 to COM1 Do not use COM 4. 1 1 0 1/4 duty COM 4 to COM1 — 1 |
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