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M37733EHL Datasheet(PDF) 7 Page - Mitsubishi Electric Semiconductor |
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M37733EHL Datasheet(HTML) 7 Page - Mitsubishi Electric Semiconductor |
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7 / 35 page  7 MITSUBISHI MICROCOMPUTERS M37733EHLXXXHP PROM VERSION OF M37733MHLXXXHP PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. RESET CIRCUIT _____ The microcomputer is released from the reset state when the RESET pin is returned to “H” level after holding it at “L” level with the power source voltage at 2.7 – 5.5 V. Program execution starts at the address formed by setting address A23 – A16 to 0016, A15 – A8 to the contents of address FFFF16, and A7 – A0 to the contents of address FFFE16. Figure 3 shows the microcomputer internal status during reset. Figure 4 shows an example of a reset circuit. When the stabilized clock is input from the external to the main-clock oscillation circuit, the reset input voltage must be 0.55 V or less when the power source voltage reaches 2.7 V. When a resonator/oscillator is connected to the main-clock oscillation circuit, change the reset input voltage from “L” to “H” after the main-clock oscillation is fully stabilized. Fig. 4 Example of a reset circuit VCC RESET RESET VCC 0V 0V 2.7V 0.55V Power on Note. In this case, stabilized clock is input from the external to the main-clock oscillation circuit. Perform careful evalvation at the system design level before using. |
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