DS1312S Maxim Integrated Products, DS1312S Datasheet
DS1312S
Specifications of DS1312S
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DS1312S Summary of contents
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... Chip Enable Input CEI - Chip Enable Output CEO TOL - V Tolerance Select CC - Battery Warning Output BW (Open Drain) - Reset Output (Open Drain) RST GND - Ground Connection DS1312 Battery Monitor CCO CCI BAT 3 6 CEO 5 4 CEI DS1312S-2 8-Pin SOIC (150-mil CCO CCI RST BAT CEO NC ...
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In addition to battery-backup support, the DS1312 performs the important function of monitoring the remaining capacity of the lithium battery and providing a warning before the battery reaches end-of-life. Because the open-circuit voltage of a lithium backup battery remains relatively ...
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... POWER MONITORING DS1312S and DS1312E varieties have an additional reset pin. These varieties detect out-of-tolerance power supply conditions and warn a processor-based system of impending power failure. When V below the trip point level defined by the TOL pin (V ...
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FUNCTIONAL BLOCK DIAGRAM Figure ...
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ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the ...
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CAPACITANCE PARAMETER Input Capacitance ( , TOL) CEI Output Capacitance ( , , ) CEO BW RST AC ELECTRICAL CHARACTERISTICS PARAMETER to Propagation Delay CEI CEO Pulse Width CE V Valid to End of CC Write Protection V Valid to ...
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TIMING DIAGRAM: POWER-UP NOTE < will begin to slew with V BAT SW CCO when CCI CCI BAT ...
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TIMING DIAGRAM: POWER-DOWN NOTE < will slew down with V BAT SW CCO until CCI CCI BAT ...
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TIMING DIAGRAM: BATTERY WARNING DETECTION NOTE measured from the expiration of the internal timer to the activation of the battery warning output TIMING DIAGRAM: BATTERY REPLACEMENT ...
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NOTES: 1. All voltages referenced to ground. 2. Measured with outputs open circuited the maximum average load which the DS1312 can supply to attached memories at V CCO1 V -0.2V. CCI the maximum average ...
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DATA SHEET REVISION SUMMARY The following represent the key differences between 12/16/96 and 06/12/97 version of the DS1312 data sheet. Please review this summary carefully. 1. Changed V max to 6V BAT 2. Changed t from max ...