Real time clock module
SERIAL-INTERFACE REAL TIME CLOCK MODULE WITH SRAM
RTC-4553
Product number (please refer to page 2)
Q41 4 5 5 3 5 x x x x x 0 0
• Built-in crystal unit allows adjustment-free efficient operation.
• Automatic calendar function (year, month, day, day of the week, hour, minute,
second).
• Automatic leap year correction.
• Builtin 30 x 4-bit S-RAM.
• Reference pulse output. (1024 Hz, 1/10 Hz)
Actual size
The details are mentioned in the application manual.
http://www.epsondevice.com
Specifications (characteristics)
Absolute Max. rating
Item
Supply voltage
Input voltage
Output voltage
Storage temperature
Symbol
V
DD
V
IN
V
OUT
T
STG
Condition
V
DD
to GND
Min.
Max.
+6.0
-0.3
V
DD
+0.3
+125
V
Unit
Terminal connection
RTC-4553
#14
#8
No. Pin terminal
GND
1
WR
2
S
IN
3
SCK
4
L1
5
L2
6
L3
7
No. Pin terminal
14 TP
OUT
S
OUT
13
CS
1
12
CS
0
11
L5
10
L4
9
V
DD
8
S
IN
,SCK, WR, CS
0
, CS
1
____
S
OUT
, T
POUT
Stored as bare
product after
unpacking
__ __
__
-55
°C
Operating range
Item
Power voltage
Clock voltage
Symbol
V
DD
V
CLK
T
OPR
Condition
—
—
Min.
2.7
2.0
-30
Typ.
5.0
—
—
Max.
5.5
5.5
+70
Unit
V
V
˚C
#1
#7
L1 to L5 are test pin. Do not connect them to any terminals.
Operating temperature
No condensation
External dimensions
RTC-4553
(SOP 14-pin)
(Unit: mm)
Item
Symbol
Condition
Ta=+25
°C,
AA
A
B
Range
5±5
5±10
5±20
3.0 Max.
+10
-120
Unit
Frequency tolerance
∆f/fo
V
DD
=5 V
x 10
-6
10.1±0.2
Oscillation start-up time
Frequency temperature
characteristics
Frequency voltage
characteristics
Aging
t
STA
T
op
f/V
fa
Ta=+25
°C,
V
DD
= 3.0 V
s
3.1
3.2±0.1
Ta=-10
°C
to +70
°C,
V
DD
=5 V
Reference at +25
°C
Ta=Fix, V
DD
=2 V to 5.5 V
Reference at 5 V
Ta=+25 °C, V
DD
=5 V,
first year
x 10
-6
±5
x 10
-6
/
year
7.4±0.2
Frequency characteristics
R4553 A
E 123 4A
5.0
0.05 Min.
1.27
0.35
0.6
0.15
Metal may be exposed on the top or bottom of this product. This won't affect any quality, reliability or electrical spec.
DC characteristics
Item
Symbol
I
DD1
I
DD2
Output voltage
V
OH
V
OL
I
OZH
Off leak current
I
OZL
V
IH
Input voltage
V
IL
I
IH
Input current
I
IL
(GND=O V, V
DD
=5 V
±
10 % , Ta=-30
°C
to +70
°C)
Block diagram
32.768 kHz
OSC
Counter
Output
control
Day
___
Condition
Min.
—
Typ.
—
1.0
Max.
100
3.0
—
0.4
2.0
Unit
µA
Sec. Min. Hou.
of
Week
Day Mon. Year
Current consumption
SCK=500 kHz
___
SCK=O Hz
TP
OUT
I
OH
=-400 µA
I
OL
=1.6 mA
V
OUT
=5.5 V
V
DD
-0.
4
—
-2.0
V
Control
register
1
Control
register
2
Control
register
3
RAM
(120bit)
µA
S
OUT
Output control
V
OUT
=0 V
4/5 V
DD
—
—
V
IN
=5.5 V
-2.0
V
IN
=0 V
—
—
V
SCK
S
IN
CS
1
CS
0
WR
1/5 V
DD
2.0
µA
Input
control
Shift register
Control circuit
83
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