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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M38045FFHKP датащи(PDF) 273 Page - Renesas Technology Corp |
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M38045FFHKP датащи(HTML) 273 Page - Renesas Technology Corp |
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273 / 387 page  2-149 APPLICATION 2.12 Standby function Rev.1.00 Jan 14, 2005 REJ09B0212-0100Z 3804 Group (Spec.H) 2.12 Standby function The 3804 group (Spec. H) is provided with standby functions to stop the CPU by software and put the CPU into the low-power operation. The following two types of standby functions are available. •Stop mode using STP instruction •Wait mode using WIT instruction 2.12.1 Stop mode The stop mode is set by executing the STP instruction. In the stop mode, the oscillation of both clocks (XIN– XOUT, XCIN–XCOUT) stop and the internal clock φ stops at the “H” level. The CPU stops and peripheral units stop operating. As a result, power dissipation is reduced. (1) State in stop mode Table 2.12.1 shows the state in the stop mode. Table 2.12.1 State in stop mode Item Oscillation CPU Internal clock φ I/O ports P0–P6 Timer PWM Watchdog timer Serial I/O1, Serial I/O2, Serial I/O3 I2C-BUS interface A/D converter D/A converter State in stop mode Stopped. Stopped. Stopped at “H” level. Retains the state at the STP instruction execution. Stopped. (Timers 1, 2, X, Y, Z) However, Timers X, Y, Z can be operated in the event counter mode. Stopped. Stopped. Stopped. However, these can be operated only when an external clock is selected. Stopped. Stopped. Retains output voltage. |
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