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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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PCA1465U/7 Scheda tecnica(PDF) 16 Page - NXP Semiconductors |
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PCA1465U/7 Scheda tecnica(HTML) 16 Page - NXP Semiconductors |
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16 / 24 page  1998 Apr 21 16 Philips Semiconductors Product specification 32 kHz watch circuits with adaptive motor pulse PCA146x series TIMING PARAMETERS Note 1. No option available when EOL indication is required. SYMBOL PARAMETER SECTION VALUE OPTION UNIT tT cycle for motor pulse (note 1) motor pulse (Figs 2, 3 and 4) 1 5, 10, 12 or 20 s tP motor pulse width 7.81 3.9 or 5.9 ms tDF duty factor 977 −µs tONL last duty factor on 61 to 305 −µs tv voltage detection cycle level mode 60 − s tSON duty factor on silver-oxide mode (Fig.3) 550 to 794 −µs tSOFF duty factor off 427 to 183 −µs tSONF first duty factor on 488 −µs tAOFF additional duty factor off lithium mode (Fig.4) 183 −µs tLON duty factor on 305 to 611 −µs tLOFF duty factor off 672 to 366 −µs tLONF first duty factor on 244 −µs tE EOL sequence end-of-life mode 4 − s tE1 motor pulse width tP − ms tE2 time between pulses 31.25 − ms tD detection sequence detection (Fig.7) 4.3 to 28.3 − ms tDS short-circuited motor 977 −µs tDI dissipation of energy 977 −µs tMC measurement cycle 488 −µs tM1 phase 1 244 −µs tM2 phase 2 (measure window) 61 −µs tM3 phase 3 122 −µs tM4 phase 4 61 −µs P positive current polarities 1 P < N N negative current polarities 2 2 to 6 tC correction sequence correction sequence (Fig.8) tP + 30.27 − ms tC1 small pulse width 977 −µs tC2 large pulse width tP − ms cycles for motor-pulses in: testing tT1 test 1 125 − ms tT2 test 2 31.25 − ms tT3 test 3 Fig.10 31.25 to 39 − ms tDEB debounce time for RESET = VDD 14.7 to 123.2 − ms |
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