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PIC18F1220E/SSSQTP Datasheet(PDF) 263 Page - Microchip Technology |
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PIC18F1220E/SSSQTP Datasheet(HTML) 263 Page - Microchip Technology |
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263 / 308 page  © 2007 Microchip Technology Inc. DS39605F-page 261 PIC18F1220/1320 TABLE 22-8: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER AND BROWN-OUT RESET REQUIREMENTS FIGURE 22-10: TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS Param. No. Symbol Characteristic Min Typ Max Units Conditions 30 TmcL MCLR Pulse Width (low) 2 — — μs 31 TWDT Watchdog Timer Time-out Period (No postscaler) 3.48 4.00 4.71 ms 32 TOST Oscillation Start-up Timer Period 1024 TOSC — 1024 TOSC —TOSC = OSC1 period 33 TPWRT Power-up Timer Period — 65.5 132 ms 34 TIOZ I/O High-Impedance from MCLR Low or Watchdog Timer Reset —2 — μs 35 TBOR Brown-out Reset Pulse Width 200 — — μsVDD ≤ BVDD (see D005) 36 TIVRST Time for Internal Reference Voltage to become stable —20 50 μs 37 TLVD Low-Voltage Detect Pulse Width 200 — — μsVDD ≤ VLVD Note: Refer to Figure 22-5 for load conditions. 46 47 45 48 41 42 40 T0CKI T1OSO/T13CKI TMR0 or TMR1 |
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