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M35060 Datasheet(PDF) 31 Page - Renesas Technology Corp |
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M35060 Datasheet(HTML) 31 Page - Renesas Technology Corp |
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31 / 42 page  30 SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS M35060-XXXSP MITSUBISHI MICROCOMPUTERS NOTE FOR SUPPLYING POWER (1) Timing of power supplying to AC pin The internal circuit of M35060-XXXSP is reset when the level of the auto clear input pin AC is “L”. This pin is hysteresis input with the pull-up resistor. The timing about power supplying of AC pin is shown in Figure 15. tw is the interval after the supply voltage becomes 0.8 ✕ VDD or more and before the supply voltage to the AC pin (VAC) becomes 0.2 ✕ VDD or more. After supplying the power (VDD and VSS) to M35060-XXXSP, the tW time must be reserved for 1 ms or more. Before starting input from the microcomputer, the waiting time (ts) must be reserved for 200 ms after the supply voltage to the AC pin becomes 0.8 ✕ VDD or more. (2) Timing of power supplying to VDD1 pin and VDD2 pin The power need to supply to VDD1 and VDD2 at a time, though it is separated perfectly between the VDD1 as the digital line and the VDD2 as the analog line. Fig. 15 Timing of power supplying to AC pin Supply voltage VDD 0.8 ✕ VDD 0.2 ✕ VDD tw Voltage [V] Time t [s] VAC (AC pin input voltage) 200ms Data input is not available PRECAUTION FOR USE Notes on noise and latch-up Connect a capacitor (approx. 0.1µF) between pins VDD and VSS at the shortest distance using relatively thick wire to prevent noise and latcj up. ROM ORDERING METHOD Please submit the information described below when ordering Mask ROM. (1) ROM Order Confirmation Form ................................................ 1 (2) Data to be written into mask ROM ................................ EPROM (three sets containing the identical data) (3) Mark Specification Form ........................................................... 1 (4) Program for character font generating + froppy disk in which character data is input. |
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