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TMP93CS44 データシート(PDF) 29 Page - Toshiba Semiconductor |
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TMP93CS44 データシート(HTML) 29 Page - Toshiba Semiconductor |
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29 / 224 page  TMP93CS44/S45 2004-02-10 93CS44-27 3. IDLE1 mode In the IDLE1 mode, only the internal oscillator operates. The system clock in the MCU stops, the CLK pin is fixed at the level “H” in the output enable (CKOCR<CLKEN> = “1”). In the halt state, and interrupt request is sampled asynchronously with the system clock, however the halt release (Restart of operation) is performed synchronously with it. IDLE1 mode is released by external interrupts (NMI, INT0). (See Table 3.3.5 “Halt Releasing Source and Halt Releasing Operation”.) When the IDLE1 mode is used, setting TRUN<PRRUN> to “0” to stop 9-bit prescaler before “HALT” instruction reduces the power consumption. Figure 3.3.7 illustrates the timing for releasing the halt state by interrupts in the IDLE1 mode. Figure 3.3.7 Timing Chart of Halt Released by Interrupts in IDLE1 Mode Address Data Address Data IDLE1 mode X1 CLK A0 to A23 ALE AD0 to AD15 RD WR NMI INT0 (Level) INT0 (Rising edge) Address + 2 Address |
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