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M35072-059FP 数据表(PDF) 28 Page - Mitsubishi Electric Semiconductor |
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M35072-059FP 数据表(HTML) 28 Page - Mitsubishi Electric Semiconductor |
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28 / 52 page  MITSUBISHI MICROCOMPUTERS M35072-XXXFP SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS 28 NOTE FOR SUPPLYING POWER __ (1)Timing of power supplying to AC pin The internal circuit of M35072-XXXFP is reset when the level of __ the auto clear input pin AC is “L”. This pin in hysteresis input with the pull-up resistor. __ The timing about power supplying of AC pin is shown in Figure 16. DATA REQUIRED FOR MASK ROM ORDERING Please send the following data for mask orders. (1) M35072-XXXFP mask ROM order confirmation form (2) 20P2Q-A mask specification from (3) ROM data (EPROM 3 sets) (4) Floppy disks containing the character font generating program + character data PRECAUTION FOR USE Notes on noise and latch-up In order to avoid noise and latch-up, connect a bypass capacitor ( ≈0.1µF) directly between the VDD1 pin and VSS1 pin, and the VDD2 pin and VSS2 pin using a heavy wire. Fig. 13 __ Timing of power supplying to AC pin After supplying the power (VDD and VSS) to M35072-XXXFP and the supply voltage becomes more than 0.8 × VDD, it needs to keep __ VIL time; tw of the AC pin for more than 1ms. __ Start inputting from microcomputer after AC pin supply voltage becomes more than 0.8 × VDD and keeping 200ms wait time. (2)Timing of power supplying to VDD1 and VDD2. Supply power to VDD1 and VDD2 at the same time. Note for waveform timing of the horizontal signals to the HOR pin Set horizontal synchronous signal edge∗ waveform timing to under 5ns and input to HOR pin. _ Set only the side which set by B/F register waveform timing under 5ns and input to HOR pin. _ ∗: Set front porch edge or back porch edge by B/F register. Voltage [V] VDD 0.8 x VDD 0.2 x VDD Supply voltage more than 1ms tW tS Time t [s] Data input disable VAC (AC pin input voltage) 90% 10% tf tr Horizontal synchronous signal |
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