Real Time Clock Modules - Seiko Epson
Serial Interface RTC4553
Features
鈥?Streamlined and adjustment free
鈥?Small package makes high density mounting
possible
鈥?Automatic calendar function (year, month, day,
day of week, hour minute, second)
鈥?Built in 30 x 4 bit S-RAM
鈥?High speed access
鈥?Reference pulse output (1024Hz, 10Hz)
鈥?Low current consumption due to C-MOS IC (1碌A
typical)
Specifications
Absolute Maximum Rating
DC Characteristics
鈥DD5V鹵10%
(GND=0V, Ta=30擄C +70擄C)
Item
Supply voltage
Input voltage
Output voltage
Storage
temperature
Soldering
conditions
Symbol
V
DD
V
IN
V
OUT
T
STG
T
SOL
Condition MIN MAX
V
DD
-GND
-0.3
S
IN
SCK, WR, -0.3
CS
0
, CS
S
OUT
, T
POUT
-0.3
Stored without -55
Tape & Reel
+6.0
V
DD
+0.3
V
DD
+0.3
+125
Unit
V
V
擄C
Item
Data holding
Current
consumption
Output voltage
Off leak current
Input voltage
Input current
Oscillation
startup time
鈥DD3V鹵10%
Symbol Condition
V
DH
I
DD1
I
DD2
V
OH
V
OL
I
OZH
I
OZL
V
IH
V
IL
I
IH
I
IL
T
S
-
SCK=500kHz
SCK=DC
I
OH
=-400碌A
I
OL
=1.6mA
V
OUT
=5.5V
V
OUT
=0V
Min Top Max Unit
2.0
1.0
V
DD
-0.4
-2.0
-2.0
4/5 V
DD
-2.0
-2.0
0.4
2.0
2.0
5.5
100
3.0
V
碌A
V
V
Under 260擄C within 10 sec. x
up to 2 times or under 230擄C
within 3 min.
Operating Range
Item
Operating
voltage
Operating
temperature
Symbol Condition MIN TYP. MAX. Unit
V
DD
T
OPR
2.7
-30
5.0
5.5
+70
V
V
IN
=5.5V
I
IL
V
IN
=0V
Ta=25擄C
V
1/5 V
DD
2.0
碌A
2.0
3.0
S
(GND=0V, Ta=30擄C +70擄C)
擄C
Item
Data holding
Current
consumption
Output voltage
Off leak current
Input voltage
Input current
Symbol Condition
V
DH
I
DD1
I
DD2
V
OH
V
OL
I
OZH
I
OZL
V
IH
V
IL
I
IH
T
S
Min Top Max Unit
3.3
100
3.0
0.4
2.0
2.0
V
碌A
V
碌A
V
1/5 V
DD
2.0
碌A
2.0
3.0
S
Frequency Characteristics
Item
Frequency
tolerance
Frequency
temperature
characteristics
Frequency voltage
characteristics
Aging
Symbol
鈭唂/fo
Condition
Ta=25擄C,
V
DD
=5V
AA
A
B
Ta=-10 to +70擄C,
V
DD
=5V
Reference at 25擄C
Ta=Fix, V
DD
=2 to 5.5V
Reference at 5V
Ta=25擄C, V
DD
=5V
first year
Range Unit
5.0鹵5.0
5.0鹵10.0
5.0鹵20.0
-10.0
+120.0
鹵5
ppm
ppm
ppm
ppm
ppm
ppm
ppm/
year
2.0
SCK=300kHz
SCK=DC
1.0
I
OH
=-400碌A V
DD
-0.4
I
OL
=1.6mA
V
OUT
=3.3V
-2.0
V
OUT
=0V
-2.0
4/5 V
DD
V
IN
=3.3V
I
IL
Ta=25擄C
-2.0
V
IN
=0V* -2.0
top
f/V
fa
Oscillation
startup time
鹵5
Dimensions (mm)
Pin Connections
1.
2.
3.
4.
5.
6.
7.
GND
WR
SIN
SCK
L1
L2
L3
14.
13.
12.
11.
10.
9.
8.
TP OUT
S OUT
CS1
CS0
L5
L4
VDD
T E L : + 4 4 1 6 3 5 5 2 8 5 2 0 FA X : + 4 4 1 6 3 5 5 2 8 4 4 3
1
2
