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
VDD to GND
Input voltage
VIN
SIN,SCK, WR, CS0, CS1
____
Output voltage
VOUT
SOUT, TPOUT
Storage temperature
TSTG
Stored as bare
product after
unpacking
Min.
Max.
Unit
#14
+6.0
__ __ __
-0.3
VDD+0.3
+125
-55
V
°C
Operating range
Item
#1
Symbol
Condition
Min.
Typ.
Max.
Power voltage
VDD
—
2.7
5.0
5.5
V
Clock voltage
VCLK
—
2.0
—
5.5
V
Operating temperature
TOPR
No condensation
-30
—
+70
˚C
#7
External dimensions
RTC-4553 (SOP 14-pin)
Frequency characteristics
Frequency tolerance
∆f/fo
Range
Condition
Symbol
VDD=5 V
AA
5±10
(Unit: mm)
R4553 A
E 123 4A
Unit
5±5
A
B
Ta=+25 °C,
5±20
x 10-6
10.1±0.2
Ta=+25 °C, VDD = 3.0 V
3.0 Max.
Top
f/V
fa
Ta=+25 °C, VDD=5 V,
first year
s
+10
-120
Frequency voltage
characteristics
Ta=-10 °C to +70 °C, VDD=5 V
Reference at +25 °C
Ta=Fix, VDD=2 V to 5.5 V
Aging
3.1
3.2±0.1
tSTA
Frequency temperature
characteristics
Oscillation start-up time
x 10-6
Reference at 5 V
No. Pin terminal
14 TPOUT
SOUT
13
CS1
12
CS0
11
L5
10
L4
9
VDD
8
L1 to L5 are test pin. Do not connect them to any terminals.
Unit
Item
No. Pin terminal
GND
1
WR
2
SIN
3
SCK
4
L1
5
L2
6
L3
7
#8
5.0
Condition
VDD
7.4±0.2
Symbol
Item
Supply voltage
Terminal connection
RTC-4553
0.05 Min.
±5
1.27
x 10-6/
year
0.6
0.35
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
Current consumption
Symbol
IDD1
IDD2
Output voltage
(GND=O V, VDD=5 V ± 10 % , Ta=-30 °C to +70 °C)
Condition
___
Min.
SCK=500 kHz
___
Typ.
Max.
—
100
1.0
VOH
IOH=-400 µA
VDD-0.
4
—
—
2.0
VOL
IOL=1.6 mA
IOZH
VOUT=5.5 V
IOZL
µA
TP OUT
4/5 VDD
VIH
Input voltage
—
VIL
—
—
—
IIH
83
VIN=5.5 V
IIL
VIN=0 V
-2.0
S OUT
V
Control
register
2
Control
register
3
µA
Output control
SCK
S IN
1/5 VDD
2.0
Control
register
1
µA
CS 1
Input current
Output
control
V
VOUT=0 V
Off leak current
Day Mon. Year
Week
Counter
0.4
-2.0
Day
Sec. Min. Hou. of
OSC
3.0
—
SCK=O Hz
Unit
Block diagram
32.768 kHz
CS 0
WR
Input
control
Shift register
Control circuit
RAM
(120bit)
