NJU6356 New Japan Radio, NJU6356 Datasheet - Page 2

• Manufacturer Part Number: NJU6356
• Description: SERIAL I/O REAL TIME CLOCK
• Manufacturer: New Japan Radio

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NJU6356
1. Timer Data Structure
date of each month and the leap year calculation is executed automatically. The unused bit for the timer data is
“0”.
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TREMINAL DESCRIPTION
FUNCTIONAL DESCRIPTION
The NJU6356 using BCD code which consisting of 4 bits per 1 digit. The calender function including the last
No. SYMBOL
1
2
3
5
6
7
8
4
DATA
CLK
V
V
I/O
CE
XT
XT
DD
SS
Input/Output Select Terminal for DATA Terminal
During the CE terminal is "L", the DATA terminal is high impedance.
Quartz Crystal Connecting Terminal (f=32.768kHz)
Refer to the line-up table for internal Cg, Cd value.
Chip Enable Input Terminal (with Pull-down Resistance)
When the CE signal is which rising edge or falling edge,
the CLK signal should be fixed to "L".
Clock Input Terminal
The DATA input/output is synchronized this clock.
When the CE terminal is "L" the DATA terminal is high impedance.
Serial Timer Data Input/Output Terminal
Power Supply
GND
Timer Data Bit Map
Second
Minute
Hour
Days of Week
Day
Month
Year
"H" : Input, "L" : Output
"H" : DATA input/output is available.
"L" : DATA terminal is high impedance.
MSB
Y7
0
0
0
0
0
m6 m5 m4 m3 m2 m1 m0
S6
Y6
0
0
0
H5 H4 H3 H2 H1 H0
D5 D4 D3 D2 D1 D0
S5
Y5
0
M4 M3 M2 M1 M0
S4
Y4
FUNCTION
S3 S2
Y3 Y2
0
W2 W1 W0
I/O
H
H
L
L
S1
Y1
LSB
S0
Y0
CE
H
H
L
L
0 to 59
0 to 59
0 to 23
1 to 31
1 to 12
0 to 99
Range
High Impedance
High Impedance
1 to 7
Output
DATA
Input