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TMP89FS60 Datasheet(PDF) 45 Page - Toshiba Semiconductor |
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TMP89FS60 Datasheet(HTML) 45 Page - Toshiba Semiconductor |
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45 / 410 page ![]() Page 31 TMP89FS60 RA001 Note: When the operation returns to the NORMAL2 mode, fc is input to the frequency division circuit of the warm-up counter. 2.3.6.2 IDLE1/2 and SLEEP1 modes The IDLE1/2 and SLEEP1 modes are controlled by the system control register 2 (SYSCR2) and maskable interrupts. The following states are maintained during these modes. 1. The CPU and the watchdog timer stop their operations. The peripheral circuits continue to oper- ate. 2. The data memory, the registers, the program status word and the port output latches are all held in the status in effect before IDLE1/2 or SLEEP1 mode was started. 3. The program counter holds the address of the instruction 2 ahead of the instruction which starts the IDLE1/2 or SLEEP1 mode. Table 2-4 Oscillation Start Operation at Release of the STOP Mode Operation mode before the STOP mode is started High-frequency clock Low-frequency clock Oscillation start operation after release Single-clock mode NORMAL1 High-frequency clock oscillation circuit - The high-frequency clock oscillation circuit starts oscillation. The low-frequency clock oscillation circuit stops oscillation. Dual-clock mode NORMAL2 High-frequency clock oscillation circuit Low-frequency clock oscillation cir- cuit The high-frequency clock oscillation circuit starts oscillation. The low-frequency clock oscillation circuit starts oscillation. SLOW1 - Low-frequency clock oscillation cir- cuit The high-frequency clock oscillation circuit stops oscillation. The low-frequency clock oscillation circuit starts oscillation. |
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