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7477 Datasheet(PDF) 169 Page - Renesas Technology Corp |
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7477 Datasheet(HTML) 169 Page - Renesas Technology Corp |
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169 / 354 page  7470/7471/7477/7478 GROUP USER’S MANUAL 1-152 HARDWARE 1.15 Reset 1.15.3 Notes on use 1. The timer continues to perform a count operation after reset release. 2. After the reset state is released, the microcomputer runs the program starting with the high-order address corresponding to the contents of address FFFF16 and the low-order address corresponding to the contents of address FFFE16. 3. After the “H” level is applied to the RESET pin, only the main clock oscillates regardless of the oscillation state precedent to the reset state, so that the microcomputer starts to operate in the ordinary mode. The XCIN pin and the XCOUT pin become P50 and P51, respectively. (The 7470/7477 group is not provided with the XCIN and XCOUT pins.) 4. When the STP instruction is executed in the ordinary mode, I/O ports are held in the state just precedent to a stop of system clock oscillation. After that, the I/O ports are put into the input mode after a reset operation of the microcomputer is performed, so that they go to the high-impedance state. |
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