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Real Time Clock Modules - Seiko Epson
Serial Interface RTC4553
Specifications
Absolute Maximum Rating
Features
Streamlined and adjustment free
Small package makes high density mounting
possible
Automatic calendar function (year, month, day,
day of week, hour minute, second)
Built in 30 x 4 bit S-RAM
High speed access
Reference pulse output (1024Hz, 10Hz)
Low current consumption due to C-MOS IC (1μA
typical)
Pin Connections
Dimensions (mm)
1. GND
2. WR
3. SIN
4. SCK
5. L1
6. L2
7. L3
14. TP OUT
13. S OUT
12. CS1
11. CS0
10. L5
9. L4
8. VDD
Item
Symbol
Condition MIN
MAX
Unit
Supply voltage
Input voltage
V
DD
V
IN
V
DD
-GND
S
IN
SCK, WR,
CS
0
, CS
S
OUT
, T
POUT
Stored without
Tape & Reel
-0.3
-0.3
+6.0
V
DD
+0.3
V
Output voltage
Storage
temperature
Soldering
conditions
V
OUT
T
STG
-0.3
-55
V
DD
+0.3
+125
V
°C
T
SOL
Under 260°C within 10 sec. x
up to 2 times or under 230°C
within 3 min.
Operating Range
Item
Symbol
Condition
MIN TYP. MAX. Unit
Operating
voltage
Operating
temperature
V
DD
2.7
5.0
5.5
V
T
OPR
-30
+70
°C
Frequency Characteristics
Item
Symbol
Condition
Range Unit
Frequency
tolerance
f/fo
Ta=25°C,
V
DD
=5V
AA
A
B
5.0±5.0
5.0±10.0 ppm
5.0±20.0 ppm
-10.0
ppm
Frequency
temperature
characteristics
Frequency voltage
characteristics
Aging
top
Ta=-10 to +70°C,
V
=5V
Reference at 25°C
Ta=Fix, V
DD
=2 to 5.5V
Reference at 5V
Ta=25°C, V
DD
=5V
first year
ppm
+120.0
±5
ppm
ppm
f/V
fa
ppm/
year
±5
DC Characteristics
VDD5V±10%
(GND=0V, Ta=30°C +70°C)
Item
Symbol Condition
Min Top Max Unit
Data holding
Current
consumption
Output voltage
V
DH
I
DD1
I
DD2
V
OH
V
OL
I
OZH
I
OZL
V
IH
V
IL
I
IH
I
IL
T
S
-
2.0
5.5
100
3.0
V
μA
SCK=500kHz
SCK=DC
I
OH
=-400μA
I
OL
=1.6mA
V
OUT
=5.5V
V
OUT
=0V
1.0
V
DD
-0.4
V
0.4
2.0
2.0
Off leak current
-2.0
-2.0
4/5 V
DD
V
Input voltage
V
1/5 V
DD
2.0
2.0
3.0
Input current
V
IN
=5.5V
I
V
=0V
Ta=25°C
-2.0
-2.0
μA
Oscillation
startup time
S
VDD3V±10%
(GND=0V, Ta=30°C +70°C)
Item
Symbol Condition
Min Top Max Unit
Data holding
Current
consumption
Output voltage
V
DH
I
DD1
I
DD2
V
OH
V
OL
I
OZH
I
OZL
V
IH
V
IL
I
IH
2.0
3.3
100
3.0
V
μA
SCK=300kHz
SCK=DC
I
OH
=-400μA
I
OL
=1.6mA
V
OUT
=3.3V
V
OUT
=0V
1.0
V
DD
-0.4
V
0.4
2.0
2.0
Off leak current
-2.0
-2.0
4/5 V
DD
μA
Input voltage
V
1/5 V
DD
2.0
Input current
V
IN
=3.3V
I
Ta=25°C
-2.0
μA
2.0
S
V
IN
=0V*-2.0
Oscillation
startup time
T
S
3.0