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TMP88CU74F Datasheet(PDF) 13 Page - Toshiba Semiconductor |
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TMP88CU74F Datasheet(HTML) 13 Page - Toshiba Semiconductor |
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13 / 132 page ![]() TMP88CU74 2003-02-17 88CU74-13 4. SLEEP mode In this mode, the internal oscillation circuit of the low-frequency clock remains active. The CPU, the watchdog timer, and the internal oscillation circuit of the high-frequency clock are halted; however, on-chip peripherals remain active (operate using the low-frequency clock). Starting and releasing of SLEEP mode are the same as for IDLE1 mode, except that operation returns to SLOW mode. 5. STOP2 mode As in STOP1 mode, all system operations are halted in this mode. As in NORMAL2 mode at the start, the operating mode returns to NORMAL2 mode, and as in SLOW mode at the start, it returns to SLOW mode after release. (a) Single-clock mode (b) Dual-clock mode Note: NORMAL1 and NORMAL2 modes are generically called NORMAL; STOP1 and STOP2 are called STOP; and IDLE1, IDLE2 and SLEEP are called IDLE. Frequency Operating Mode High- frequency Low- frequency CPU Core On-chip Peripherals Machine Cycle Time RESET1 Reset Reset NORMAL1 Operate IDLE1 Turning on oscillation Operate 4/fc [s] STOP1 Turning off oscillation Turning off oscillation Halt Halt ⎯ NORMAL2 High-frequency IDLE2 Turning on oscillation Halt Operate (High and/or Low) 4/fc [s] SLOW Low-frequency SLEEP Turning on oscillation Low-frequency 4/fs [s] STOP2 Turning off oscillation Turning off oscillation Halt Halt ⎯ Figure 1.4.7 Operating Mode Transition Diagram RESET NORMAL1 mode NORMAL2 mode SLOW mode IDLE1 mode IDLE2 mode SLEEP mode STOP1 mode STOP2 mode Instruction Instruction Instruction Instruction Instruc- tion Release input Interrupt Release input Reset release Instruction Instruction Interrupt Instruction Interrupt 2007-10-19 |
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