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PCA1628U Datasheet(PDF) 8 Page - NXP Semiconductors |
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PCA1628U Datasheet(HTML) 8 Page - NXP Semiconductors |
8 / 16 page 1997 Dec 12 8 Philips Semiconductors Product specification 32 kHz watch circuits with EEPROM PCA16xx series Notes 1. Cycle time can be changed to one of the following values: 1, 5, 10, 12 or 20 s (see Chapter “Available types”). 2. Pulse width can be varied from 2 ms to 15.7 ms in steps of 1 ms (see Chapter “Available types”). 3. Duty factor is 1 : 32 and RESET = VDD or VSS. Motor output Vsat saturation voltage Σ (P + N) RL =2kΩ; Tamb = −10 to +60 °C − 150 200 mV Rsc short-circuit resistance Σ (P + N) Itransistor <1mA − 200 300 Ω tT cycle time note 1 tP pulse width note 2 Oscillator VOSC ST starting voltage 1.2 −− V gm transconductance Vi(p-p) ≤ 50 mV 6 15 −µS tosc start-up time − 1 − s ∆f/f frequency stability ∆V DD = 100 mV − 0.05 × 10−6 0.3 × 10−6 Ci input capacitance 8 10 12 pF Co output capacitance 12 15 18 pF Voltage level detector VLIT threshold voltage lithium mode 1.65 1.80 1.95 V VEOL threshold voltage battery end-of-life 1.27 1.38 1.46 V ∆V VLD hysteresis of threshold − 10 − mV TCVLD temperature coefficient −−1 − mV/K tV voltage detection cycle − 60 − s Reset input fo output frequency − 32 − Hz ∆V o output voltage swing R = 1 M Ω; C=10pF 1.4 −− V tedge edge time R = 1 M Ω; C=10pF − 1 −µs Iim peak input current note 3 − 320 − nA Ii(av) average input current − 10 − nA Test mode cycle time for motor pulses in: tT1 test 1 − 125 − ms tT2 test 2 − 31.25 − ms tT3 test 3 see Chapter “Available types” tDEB debounce time RESET = VDD 14.7 − 123.2 ms Battery end-of-life tEOL end-of-life sequence − 4 − s tE1 motor pulse width see “Available types” − tP − ms tE2 time between pulses − 31.25 − ms SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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