F15353
2-wire Real-time Clock
Release Date: Sep, 2008
Version: 0.12P
Fintek
Feature Integration Technology Inc.
F15353
F15353 Datasheet Revision History
Version
0.10P
Date
Jan, 2008
Page
Preliminary version
Revision History
Modify some contents in General Description
0.11P
Jul, 2008
4
Current consumption spec changed to 0.55uA at 3.0V
Add TSSOP-8 package for option
4
5
9
supply voltage as low as
1.2
1.1 V (min.)
Add TSSOP-8 pin configuration
Operating voltage
3.0
1.3V
Input low voltage
0.6
0.4V
0.12P
Sep, 2008
12
19
Revise 6.4 description
Add “Caution: The figure range which can be corrected is that
the calculated value is from 0 to 62.”
33
37
Remove redundant register 7.9-7.13
Figure 18: F15353S Application Circuit
Please note that all data and specifications are subject to change without notice. All the trade marks of products and
companies mentioned in this data sheet belong to their respective owners.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Customers using or selling these products for use in
such applications do so at their own risk and agree to fully indemnify Fintek for any damages resulting from such
improper use or sales.
1
V0.12P
Fintek
Feature Integration Technology Inc.
F15353
Table of Contents
1
2
3
4
GENERAL DESCRIPTION ........................................................................................................................................................ 4
FEATURE ..................................................................................................................................................................................... 4
PIN CONFIGURATION .............................................................................................................................................................. 5
PIN DESCRIPTION..................................................................................................................................................................... 6
4.1.
4.2.
4.3.
4.4.
P
OWER
P
IN
........................................................................................................................................................................... 6
C
RYSTAL
O
SCILLATOR
P
IN
.................................................................................................................................................... 6
I
NTERRUPT
P
IN
..................................................................................................................................................................... 6
I2C I
NTERFACE
P
IN
............................................................................................................................................................... 7
5
6
ELECTRICAL CHARACTERISTIC......................................................................................................................................... 8
FUNCTIONAL DESCRIPTION ................................................................................................................................................. 9
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
P
OWER
S
UPPLY
V
OLTAGE
D
ETECTOR
....................................................................................................................................... 9
P
OWER
S
UPPLY
V
OLTAGE
D
ETECTOR
....................................................................................................................................... 9
R
EAL
-
TIME
D
ATA
................................................................................................................................................................... 11
I
NVALID
D
ATE AND
E
ND
-
OF
-M
ONTH
P
ROCESS
....................................................................................................................... 12
I
NTERRUPT
F
UNCTION
............................................................................................................................................................ 12
A
LARM
I
NTERRUPT
F
UNCTION
............................................................................................................................................... 18
C
LOCK
A
DJUSTMENT
F
UNCTION
............................................................................................................................................ 19
I2C I
NTERFACE
F
UNCTION
..................................................................................................................................................... 20
D
ATA
W
RITING
....................................................................................................................................................................... 21
C
OMMUNICATION
D
ATA
C
ONFIGURATION
........................................................................................................................... 25
7
REGISTER DESCRIPTION (I2C ADDRESS = 0X6X).......................................................................................................... 26
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
S
TATUS
R
EGISTER
_1 A
CCESS
(C
OMMAND
000
B
).................................................................................................................... 26
S
TATUS
R
EGISTER
_2 A
CCESS
(C
OMMAND
001
B
).................................................................................................................... 27
R
EAL
-
TIME
D
ATA
1 A
CCESS
, Y
EAR
D
ATA
(C
OMMAND
010
B
).................................................................................................. 28
R
EAL
-
TIME
D
ATA
2 A
CCESS
, H
OUR
D
ATA
(C
OMMAND
011
B
) ................................................................................................. 29
INT1 R
EGISTER
_1 A
CCESS
(C
OMMAND
100
B
) ....................................................................................................................... 30
INT1 R
EGISTER
_2 A
CCESS
(C
OMMAND
101
B
) ....................................................................................................................... 31
C
LOCK
A
DJUSTMENT
R
EGISTER
A
CCESS
(C
OMMAND
110
B
) .................................................................................................. 32
F
REE
R
EGISTER
A
CCESS
(C
OMMAND
111
B
)............................................................................................................................ 33
2
V0.12P
Fintek
Feature Integration Technology Inc.
F15353
8
9
ORDERING INFORMATION .................................................................................................................................................. 34
PACKAGE DIMENSIONS (8-SOP, 8-TSSOP)........................................................................................................................ 35
10 APPLICATION CIRCUIT ........................................................................................................................................................ 37
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V0.12P
Fintek
Feature Integration Technology Inc.
F15353
1 General Description
The F15353 which is a low current consumption 2- wire CMOS real-time clock operates under 1.3V to 3.6V. The
current consumption is only 0.55uA and operation voltage is 1.1V as time keeping. In a system that operates on a
backup battery, the free register incorporated in the real-time clock can be used for the user backup
memory function. The user register can hold data on a supply voltage as low as 1.1 V (min.), so the data stored
in the register before the main power supply was removed and can be recalled any time after the power is
reconnected.
A clock adjustment function that enables wide range correction of deviation in the frequency of the crystal
oscillator at a minimum resolution of 1 PPM is integrated in the F15353. The clock adjustment value can be set in
accordance with changes in the temperature. It is possible to make the realization of clock function that retains a
high degree of accuracy regardless of temperature variation by combining with a temperature sensor.
2 Feature
Low Current Consumption: 0.55uA, Typical (VDD = 3.0V, Ta = 25°C)
Operate Voltage Range: 1.3 to 3.6V
Minimum Time Keeping Operation Voltage: 1.1V
Built-in Clock Adjustment Function
Built-in Free User Register
Built-in Alarm Interrupt
Built-in Flag Generator at Power down or Power on
Built-in Constant Voltage Circuit
Built-in 32KHz Crystal Oscillator Circuit (Cd Built-in, Cq External)
Auto Calendar up to the Year 2099, Automatic Leap Year Calculation Function
I2C Interface
Powered by 3.3VCC and packaged in SOP-8 and TSSOP-8
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V0.12P
