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NJR Corporation/NJRC
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NXP USA Inc.
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SERIAL I/O REAL TIME CLOCK

NJR Corporation/NJRC

The NJU6355 series is a serial I/O real time clock suitable for 4 bits microprocessor. It contains quartz crystal oscillator, counter, shift register, voltage regulator, voltage detector and interface controller.

Datasheets:
Product Description

The NJU6355 series is a serial I/O real time clock suitable for 4 bits microprocessor. It contains quartz crystal oscillator, counter, shift register, voltage regulator, voltage detector and interface controller. The NJU6355 series required only 4-port of microprocessor for data transfer, and the microprocessor can receive the data at any time when the microprocessor requires. The operating voltage is as wide as 2.0V to 5.5V, consequently, the NJU6355 series can count accurate time data even if the back up period. Furthermore, the long time back up is available as the operating current during the back up period is less than 3uA(TYP).

Features
  • Low Operating Current (3.0µA (TYP) @2.0V
    • 3.0µA (TYP) @3.0V
    • 4.0µA (TYP) @5.0V)
  • BCD Counts of Seconds, Minutes, Hours, Days of Week, Day, Month and Year
  • Required only 4-port (DATA, CLK, CE and I/O/)
  • Low Battery Detector (Low Voltage Alarm Signal Output)
  • Automatic Leap Year Compensation (Up to AD 2099)
  • C-MOS Technology
Specifications
  • Current - Timekeeping (Max):4µA ~ 15µA @ 2V ~ 5V
  • Date Format:YY-MM-DD-dd
  • Features:Leap Year
  • Interface:4-Wire Serial
  • Operating Temperature:-30°C ~ 80°C
  • Packaging:Tube
  • Supplier Device Package:8-DIP ~ 8-EMP
  • Time Format:HH:MM:SS (24 hr)
  • Type:Clock/Calendar
  • Voltage - Supply:4.5V ~ 5.5V
Parts

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NJU6355EMNJU6355EMIC RTC CLK/CALENDAR SER 8-EMP Clock/CalendarLeap Year-HH:MM:SS (24 hr)8-SOIC (0.154", 3.90mm Width)RoHS
NJU6355EDNJU6355EDIC RTC CLK/CALENDAR SER 8-DIP Clock/CalendarLeap Year-HH:MM:SS (24 hr)8-DIP (0.300", 7.62mm)RoHS

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