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7477 Datasheet(PDF) 183 Page - Renesas Technology Corp |
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7477 Datasheet(HTML) 183 Page - Renesas Technology Corp |
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183 / 354 page ![]() 7470/7471/7477/7478 GROUP USER’S MANUAL 1-166 HARDWARE 1.17 Low-power dissipation function 1.17.2 Wait mode To switch to the wait mode, execute the WIT instruction. In the wait mode, oscillation is continued but the internal clock φ stops. Accordingly, the CPU stops but the peripheral units operate since oscillation is continued. (1) State of wait mode Table 1.17.2 shows a state of wait mode. Table 1.17.2 State of wait mode State of wait mode Operate Stop State at execution WIT instruc- tion is held. Operate Operate Held Held Held Item Oscillation CPU I/O port P0 to P5 Timer Serial I/O RAM SFR CPU register V V CPU register : The following 6 registers are incorporated in the CPU. • Accumulator • Index register X • Index register Y • Stack pointer • Program counter • Processor status register |
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