NJU6356
SERIAL I/O REAL TIME CLOCK
sGENERAL
DESCRIPTION
The NJU6356 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 NJU6356 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 NJU6356 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
NJU6356ED
NJU6356EM
sPIN
CONFIGURATION
I/O
XT
XT
V
SS
V
DD
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
NJU6356 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
I/O
V
SS
V
DD
Controller
&
Clock Counter
Voltage Detector
CLK
CE
-1-
1
2
3
4
5
6
