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PIC12LC671 数据表(PDF) 103 Page - Microchip Technology |
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PIC12LC671 数据表(HTML) 103 Page - Microchip Technology |
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103 / 129 page  © 1999 Microchip Technology Inc. DS30561B-page 103 PIC12C67X FIGURE 12-7: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, AND POWER-UP TIMER TIMING TABLE 12-4: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER Parameter No. Sym Characteristic Min Typ† Max Units Conditions 30 TmcL MCLR Pulse Width (low) 2 —— µsVDD = 5V, –40°C to +125°C 31* Twdt Watchdog Timer Time-out Period (No Prescaler) 718 33 ms VDD = 5V, –40°C to +125°C 32 Tost Oscillation Start-up Timer Period — 1024TOSC —— TOSC = OSC1 period 33* Tpwrt Power up Timer Period 28 72 132 ms VDD = 5V, –40°C to +125°C 34 TIOZ I/O Hi-impedance from MCLR Low or Watchdog Timer Reset —— 2.1 µs * These parameters are characterized but not tested. † Data in "Typ" column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are not tested. VDD MCLR Internal POR PWRT Timeout OSC Timeout Internal RESET Watchdog Timer RESET 33 32 30 31 34 I/O Pins 34 36 |
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