RTC72421 series datasheets. Manufacturer: Seiko Epson Corporation.

RTC72421 4-bit real time clock module in 18-pin DIP package. Operational temperature range from -10°C to 70°C. Datasheet*) RTC72423 4-bit real time clock module in 24-pin - package. Operational temperature range from -40°C to 85°C. Datasheet*)

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