BQ4847YMT

BQ4847YMT, RTC Module, 28-DIP, 5V, 500nA, Texas Instruments

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Price:: US $0.20~1.60 / piece [Get Latest Price]

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PartNumber:: BQ4847YMT

Brand:: Texas Instruments - TI | Pack: DIP | D/C: 12+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
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Products Upload time: 2012-08-07

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Part Number:BQ4847YMT
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Product Summary

The BQ4847YMT is a RTC Module With CPU Supervisor. The BQ4847YMT is a low-power microprocessor peripheral that integrates a time-of-day clock, a 100-year calendar, a CPU supervisor, a battery, and a crystal in a 28-pin DIP module. The part is ideal for fax machines, copiers, industrial control systems, point-of-sale terminals, data loggers, and computers. The BQ4847YMT contains an internal battery and crystal. Through the use of the conditional chip enable output (CEOUT) and battery voltage output (VOUT) pins, the BQ4847YMT can write-protect and make nonvolatile an external SRAM. The backup cell powers the real-time clock and maintains SRAM information in the absence of system voltage.

Parametrics

BQ4847YMT absolute maximum ratings: (1)Power supply voltage (maximum): 5.5 V ; (2)Power supply voltage (minimum): 4.5 V ; (3)The maximum working temperature: + 70℃ ; (4)The minimum working temperature: 0 ℃.

Features

BQ4847YMT features: (1)Real-Time Clock counts seconds through years in BCD format; (2)Integrated battery and crystal; (3)On-chip battery-backup switchover circuit with nonvolatile control for an external SRAM; (4)130mAh battery capacity; (5)±1 minute per month clock accuracy; (6)Less than 500nA of clock operation current in backup mode; (7)Microprocessor reset valid to VCC = VSS; (8)Independent watchdog timer with a programmable time-out period; (9)Power-fail interrupt warning; (10)Programmable clock alarm interrupt active in battery-backup mode; (11)Programmable periodic interrupt; (12)Battery-low warning.