NJU6355EM# NJR, NJU6355EM# Datasheet - Page 2

• Manufacturer Part Number: NJU6355EM#
• Description: IC SERIAL I/O REAL TIME CLOCK
• Manufacturer: NJR
• Type: Clock/Calendarr

Specifications of NJU6355EM#

• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Serial
• Voltage - Supply: 2 V ~ 5.5 V
• Operating Temperature: -30°C ~ 80°C
• Mounting Type: Surface Mount
• Package / Case: 8-EMP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Other names: NJU#6355EM; NJU#6355EM

NJU6355
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”.
TREMINAL DESCRIPTION
FUNCTIONAL DESCRIPTION
- 2 -
The NJU6355 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
CE
I/O
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
S5
H5 H4 H3 H2 H1 H0
D5 D4 D3 D2 D1 D0
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