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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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T89C5115-RATIM датащи(PDF) 68 Page - ATMEL Corporation |
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T89C5115-RATIM датащи(HTML) 68 Page - ATMEL Corporation |
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68 / 113 page  68 AT89C5115 4128F–8051–05/06 Watchdog Programming The three lower bits (S0, S1, S2) located into WDTPRG register permit to program the WDT duration. Table 49. Machine Cycle Count To compute WD Timeout, the following formula is applied: Note: Svalue represents the decimal value of (S2 S1 S0) Find Hereafter computed Timeout values for f OSCXTAL = 12 MHz in X1 mode Table 50. Timeout Computation S2 S1 S0 Machine Cycle Count 000 2 14 - 1 001 215 - 1 010 216 - 1 011 217 - 1 100 218 - 1 101 2 19 - 1 110 2 20 - 1 111 221 - 1 S2 S1 S0 fOSC=12 MHz fOSC=16MHz fOSC=20 MHz 0 0 0 16.38 ms 12.28 ms 9.82 ms 0 0 1 32.77 ms 24.57 ms 19.66 ms 0 1 0 65.54 ms 49.14 ms 39.32 ms 0 1 1 131.07 ms 98.28 ms 78.64 ms 1 0 0 262.14 ms 196.56 ms 157.28 ms 1 0 1 524.29 ms 393.12 ms 314.56 ms 1 1 0 1.05 s 786.24 ms 629.12 ms 1 1 1 2.10 s 1.57 s 1.25 s FTime Out Fosc 62 × WDX2 X2 ∧ 2 14 2 Svalue × () ----------------------------------------------------------------------------- = – |
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