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ST72734 数据表(PDF) 134 Page - STMicroelectronics |
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ST72734 数据表(HTML) 134 Page - STMicroelectronics |
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134 / 144 page  ST72774/ST727754/ST72734 134/144 6.2 AC/DC ELECTRICAL CHARACTERISTICS (T A = 0 to +70°C unless otherwise specified) Note 1: HALT mode no longer exists. Note 2: The USB cell must be put in suspend mode as well as the MCU in HALT mode. Since the latter no longer exists for enhanced arcing protection, the measurement of the USB suspend consumption parameter is no longer relevant. Note: : The minimum period tILIL should not be less than the number of cycle times it takes to execute the interrupt service routine plus 21 cycles. GENERAL Symbol Parameter Conditions Min Typ. Max Unit VDD Operating Supply Voltage RUN & WAIT mode 4.0 5 5.5 V IDD CPU RUN mode I/O in input mode VDD = 5V fCPU = 8 MHz, TA = 20 ° C 14 18 mA CPU WAIT mode 12 18 mA CPU HALT mode (see Note 1) N/A USB Suspend mode (see Note 2) N/A CONTROL TIMING Symbol Parameter Conditions Value Unit Min Typ. Max fOSC fCPU Frequency of Operation: external frequency internal frequency internal frequency fOSC= 24MHz fOSC=12MHz 24 8 4 MHz tBU Startup Time Built-Up Time Crystal Resonator 8 20 ms tRL External RESET Input pulse Width 1000 ns tPORL Internal Power Reset Duration 4096 tCPU tPOWL Watchdog RESET Output Pulse Width 500 ns tDOG Watchdog Time-out fCPU = 8 MHz 49152 6 3145728 384 tCPU ms tILIL Interrupt Pulse Period (1) tCPU tOXOV Crystal Oscillator Start-up Time 50 ms tDDR Power up rise time VDD min 1 100 ms |
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