NJU6355

NJU6355 SERIAL I/O REAL TIME CLOCK sGENERAL 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). sFEATURES qLow Operating Voltage qLow Operating Current sPACKAGE OUTLINE NJU6355ED NJU6355EM sPIN CONFIGURATION I/O XT XT VSS VDD DATA CLK CE 2.0 to 3.6V 3.0uA (TYP) @2.0V 3.0uA (TYP) @3.0V 4.0uA (TYP) @5.0V qBCD Counts of Seconds, Minutes, Hours, Days of Week Day, Month and Year qRequired only 4-port DATA, CLK, CE and I/O qLow Battery Detector Low Voltage Alarm Signal Output qAutomatic Leap Year Compensation Up to AD 2099 qPackage Outline DIP8 / DMP8 qC-MOS Technology sLINE-UP TABLE Type No. Output Data NJU6355 E Seconds, Minutes, Hours, Days of Week, Day, Month, Year Oscillation Capacitor Cd=21pF / Cg=21pF on Chip sBLOCK DIAGRAM XT XT Oscillator Divider Timer Counter Sec. Min. Hr. Days of W eek Day Month Year Sec. Min. Hr. Days of W eek Day Month Year DATA Shift Register...