BQ3285 series datasheets. Manufacturer: Unitrode Semiconductor Products.

BQ3285P Real-time clock (RTC) with 114 bytes of general storage in 24-pin PDIP package. Operational temperature range from 0°C to 70°C. Datasheet*) BQ3285Q Real-time clock (RTC) with 114 bytes of general storage in 28-pin PLCC package. Operational temperature range from 0°C to 70°C. Datasheet*) BQ3285S Real-time clock (RTC) with 114 bytes of general storage in 24-pin SOIC package. Operational temperature range from 0°C to 70°C. Datasheet*)

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