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M66271FP Datasheet(PDF) 8 Page - Mitsubishi Electric Semiconductor |
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M66271FP Datasheet(HTML) 8 Page - Mitsubishi Electric Semiconductor |
8 / 21 page OPERATION PANEL CONTROLLER M66271FP MITSUBISHI <DIGITAL ASSP> Control register M66271FP has 9 kinds of control register. To set mode from MPU to control register,use IOCS, LWR,RD,A<4:0> and D<7:0>. (1) Kind of control register Kind of register Address Functions of register R/W No. Name A3 A2 A1 R2 Horizontal display character number register Set the number of horizontal display characters per line. W R3 Horizontal synchronous pulse width register Set the pulse width of LP per line. W R5 Set the number of display line of vertical direction. W Set the display start address of VRAM. Set lower 8-bit to SAL and upper 6-bit to SAH. Max=257FH Control register Table R6 Display start address register R7 R/W R1 Mode register D6 – D0 set the basic mode. D7 is the status register of cycle steal state. R4 Cycle steal enable width register Set the term of cycle steal enable access during horizontal synchronous term. W R8 M cycle variable register Set the cycle of LCD alternating signal from M . W D7=Only "R" R/W A0 Data D7 D6 D5 D4 D3 D2 D1 D0 CR LPW SLT SAL SAH DISP REV LCDE OSCC CSW MT CSES A4 R9 R10 R11 Data port register VRAM address index register 01 00 0 10 00 0 00 00 0 11 00 0 01 10 0 10 10 0 00 10 0 11 10 0 00 00 1 01 0 0 1 10 00 1 Data port register for accessing VRAM through the register. Set the address for accessing VRAM. Set lower 8-bit to IDXL and upper 6-bit to IDXH. Max=257FH And automatically increase in continuous address . R/W DP IDXL IDXH R/W Note:Data port register(DP) and VRAM address index register(IDXL,IDXH) are exclusive register,when using this IC for the LCD module built-in system. When RESET,each register is initialize the setting which is assumed LCD size of 320 ×240 dots. Then,even if each register has not setting,output the signal to LCD side ,it is possible to be alternation of LCD. RESET Vertical line number register |
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