DS1632 Maxim Integrated Products, DS1632 Datasheet
DS1632
Specifications of DS1632
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DS1632 Summary of contents
Page 1
... The DS1632 PC Power-Fail and Reset Controller is designed to do various functions involving battery backup and other functions typically accomplished with discrete components. The DS1632 provides a 32.768 kHz battery-backed crystal oscillator and switched V clock function located in accompanying chip sets. In addition, the DS1632 provides for reset on both PC Power-Fail and Reset Controller PIN ASSIGNMENT ...
Page 2
... BLOCK DIAGRAM Figure 1 OPERATION - CRYSTAL OSCILLATOR SECTION The DS1632 crystal oscillator is designed to be hooked directly to a 32.768 kHz crystal. By using the Daiwa Part No. DT26S, Seiko Part No. DS-VT-200 or equivalent, the oscillator will be accurate enough to run a real time clock to within ±2 minutes per month. If another crystal selected, it should have ...
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... The external load on OSC OUT and V determine the total load on the battery. OPERATION - PUSHBUTTON RESET The DS1632 provides an input pin for direct connection to a pushbutton. The pushbutton reset input requires an active low level input. While TTL levels are sufficient to properly activate this input, PBRST it has been primarily designed for contact closure ...
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... MAX UNITS NOTES 5 +0 +0.8 V 3.5 V =4.5 to 5.5V) CC MAX UNITS NOTES mA mA -0.1V V 0.4 V 2.0 mA 4.75 V 4. 100 mA (0°C; V =<V CC MAX UNITS NOTES 2 µA 500 µA (t =25°C) A MAX UNITS NOTES DS1632 BAT 4 ...
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... SYMBOL MIN TYP RPD t 95 RST t 190 RST t 95 RPU t 190 RPU t 9 RPD t 18 RPD t 300 (0°C to 70°C; V =5V ± 10%) CC MAX UNITS NOTES ms 105 ms RD=GND 210 ms RD=V 105 ms RD=GND 210 ms RD RD=GND 22 ms RD=V µs µs µs DS1632 ...
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... Supply current output is specified with 0.3V drop from and are open-drain outputs. RST RST and PF remain within 0.5 volts Sink and source currents apply to all outputs except OSC OUT which has a drive capability of sourcing 500 BAT on power down until 0.5V and sinking CCO drops below 2.0V 0 DS1632 ...