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6355ED PDF даташит

Спецификация 6355ED изготовлена ​​​​«New Japan Radio» и имеет функцию, называемую « NJU6355ED».

Детали детали

Номер произв 6355ED
Описание NJU6355ED
Производители New Japan Radio
логотип New Japan Radio логотип 

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6355ED Даташит, Описание, Даташиты
SERIAL I/O REAL TIME CLOCK
NJU6355
www.DataSheet4U.com
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).
sPACKAGE OUTLINE
NJU6355ED
NJU6355EM
sFEATURES
qLow Operating Voltage
2.0 to 3.6V
qLow Operating Current
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
sPIN CONFIGURATION
I/O
XT
XT
VSS
VDD
DATA
CLK
CE
sLINE-UP TABLE
Type No.
Output Data
Oscillation Capacitor
NJU6355 E Seconds, Minutes, Hours, Days of Week, Day, Month, Year Cd=21pF / Cg=21pF on Chip
sBLOCK DIAGRAM
XT Oscillator
XT Divider
Sec. Min.
Timer Counter
Hr.
Days of
W eek
Day
Month
Year
Sec. Min.
Hr.
Days of
W eek
Day
Shift Register
Month
Year
DATA
VSS
VDD Controller
&
Voltage Detector
Clock Counter
I/O
CLK
CE
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6355ED Даташит, Описание, Даташиты
NJU6355
www.DataSheet4U.com
sTREMINAL DESCRIPTION
No. SYMBOL
FUNCTION
I/O Input/Output Select Terminal for DATA Terminal
1 "H" : Input, "L" : Output
During the CE terminal is "L", the DATA terminal is high impedance.
2 XT Quartz Crystal Connecting Terminal (f=32.768kHz)
3 XT Refer to the line-up table for internal Cg, Cd value.
Chip Enable Input Terminal (with Pull-down Resistance)
"H" : DATA input/output is available.
5 CE
"L" : DATA terminal is high impedance.
When the CE signal is which rising edge or falling edge,
the CLK signal should be fixed to "L".
Clock Input Terminal
6 CLK 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
I/O CE
DATA
7 DATA
HH
LH
Input
Output
H L High Impedance
L L High Impedance
8 VDD Power Supply
4 VSS GND
sFUNCTIONAL DESCRIPTION
1. Timer Data Structure
The NJU6355 using BCD code which consisting of 4 bits per 1 digit. The calender function including the last
date of each month and the leap year calculation is executed automatically. The unused bit for the timer data is
“0”.
Timer Data Bit Map
Second
MSB
LSB Range
0 S6 S5 S4 S3 S2 S1 S0 0 to 59
Minute
0 m6 m5 m4 m3 m2 m1 m0 0 to 59
Hour
0 0 H5 H4 H3 H2 H1 H0 0 to 23
Days of Week
0 W2 W1 W0 1 to 7
Day 0 0 D5 D4 D3 D2 D1 D0 1 to 31
Month
0 0 0 M4 M3 M2 M1 M0 1 to 12
Year
Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 0 to 99
-2-









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6355ED Даташит, Описание, Даташиты
NJU6355
www.DataSheet4U.com
2. Timer Data Reading
When the I/O termianl is "L" and the CE tarminal is "H", timer data can read out. The output is LSB first and the
output data strings is shown below.
The timer data is transferred from timer counter to shift register at rising edge of the chip enable on the CE
terminal, and output the LSB of the timer data from the DATA terminal.
Afterward the timer data in the shift register shift by synchronized at the falling edge of clock signal on the CLK
terminal and output from the DATA terminal.
If the timer data is updated in the data output, there are one second difference between timer data and output
data.
Type E
Year
Month
Day
Days of
Week
Hour
Minute Second
The data is read out from LSB of Year, and first 52-bit is effective.
If the low voltage detector detect the low battery, (EE)H is written into each digit of timer data and read out. The
code of (EE)H is a warning for the broken.
< Read Out Timing >
CLK
CE
I/O
Data
Output
Shift
Register
01 2 3 4 5 6 7
Year
01 2 3 4 5 6 7
34567
Second
34567
(1) (2)
The timer data is transferred to the shift register at rising edge of the CE (1)
and LSB of the timer data is output to the DATA terminal. Afterward the
timer data in the shift register shift by synchronized at falling edge of the
CLK(2) then output to the DATA terminal time-to-time.
Note) When the CE signal is which rising edge or falling edge,
the CLK signal should be fixed to “L”. And so, before the
CE signal is raised, the I/O signal should be fixed to “L”.
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Номер в каталогеОписаниеПроизводители
6355ED NJU6355EDNew Japan Radio
New Japan Radio

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