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UPD178002 Datasheet(PDF) 26 Page - NEC |
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UPD178002 Datasheet(HTML) 26 Page - NEC |
26 / 48 page ![]() 26 µPD178002, 178003 Data Sheet U12628EJ3V0DS00 7. STANDBY FUNCTION The following two standby functions are available for further reduction of system current consumption. • HALT mode: In this mode, the CPU operation clock is stopped. The average current consumption can be reduced by intermittent operation by combining this mode with the normal operation mode. • STOP mode: In this mode, oscillation of the system clock is stopped. All the operations performed on the system clock are suspended, resulting in extremely small power consumption. Figure 7-1. Standby Function 8. RESET FUNCTION The following two reset methods are available. • External reset by RESET signal input • Internal reset by Power On Clear (POC). System clock operation STOP mode (System clock oscillation stopped) HALT mode (Clock supply to CPU halted, oscillation maintained) Interrupt request Interrupt request HALT instruction STOP instruction |
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