BQ4845S Real Time Clock IC SMT Benchmarq
Some images are stock photos close Manufacturer: Benchmarq Part Number: BQ4845S Package: SOIC Lead/Terminal Type: Surface Mount Number Leads/Terminals: 28	Price: $5.50 Shipping Weight: 0.03 ounces 204 available for immediate delivery Product code: G497APF07
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Item Specifications and Additional Information: Real Time Clock ICs Parallel RTC with CPU Supervisor Features - Real-Time Clock counts seconds through years in BCD format - On-chip battery-backup switchover circuit with nonvolatile control for external SRAM - Less than 500nA of clock operation current in backup mode - Microprocessor reset valid to VCC = VSS - Independent watchdog timer with a programmable time-out period - Power-fail interrupt warning - Programmable clock alarm interrupt active in battery-backup mode - Programmable periodic interrupt - Battery-low warning Recommended DC Operating Conditions Supply voltage (VCC): 4.75V to 5.5V Input low voltage: -0.3V to 0.8V Input high voltage: 2.2V to VCC + 0.3V Backup cell voltage: 2.3V to 4.0V DC Electrical Characteristics (TA = TOPR, VCC min ≤ VCC ≤ VCC max) Input leakage current (VIN = VSSS to VCC): ±1uA max. Output high voltage (IOH = -2.0mA): 2.4V min. Operating supply current (Min. cycle duty = 100%,CS = VIL, I I/O = 0mA): 12mA typ. Supply switch-over voltage: VBC typ. Battery operation current (VBC = 3V, TA = 25°C, no load on VOUT or CEOUT): 0.3uA typ. Power-fail-detect voltage: 4.62V typ. Watchdog input low current (0 < VWDI < 0.8V): -10uA typ. Crystal Specifications (DT-26 or Equivalent) Oscillation frequency: 32.768kHz typ. Load capacitance: 6.0pF typ. Series resistance: 45KΩ max. Drive level: 1uW max. Applications: - Fax Machines - Copiers - Industrial Control Systems - Point-of-Sale Terminals - Data Loggers - Computers Manufactured by: Benchmarq Part Number: BQ4845S Full Datasheet: Benchmarq SMT IC BQ4845S

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