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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC16C925-S/CL датащи(PDF) 151 Page - Microchip Technology |
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PIC16C925-S/CL датащи(HTML) 151 Page - Microchip Technology |
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151 / 182 page  2001 Microchip Technology Inc. Preliminary DS39544A-page 149 PIC16C925/926 FIGURE 15-7: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP TIMER TIMING TABLE 15-5: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP TIMER REQUIREMENTS VDD MCLR Internal POR PWRT Time-out OSC Time-out Internal RESET Watchdog Timer RESET 33 32 30 31 34 I/O Pins 34 Note: Refer to Figure 15-4 for load conditions. Parameter No. Symbol Characteristic Min Typ† Max Units Conditions 30 TmcL MCLR Pulse Width (low) 2 —— µs 31 TWDT Watchdog Timer Time-out Period (No Prescaler) 718 33 ms VDD = 5V, -40°C to +85°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 +85°C 34 TIOZ I/O Hi-impedance from MCLR Low or Watchdog Timer Reset —— 2.1 µs † Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are not tested. |
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