Actual size
http://w w w.epsontoyocom.co.jp
Real time clock module
Real time clock moduleReal time clock module
Real time clock module
Epson Toyocom
Epson Toyo comEpson Toyo com
Epson Toyo com
Block diagram
Overview
32kHz
OUTPUT
CONTROL
OSC
CO MPA R ATO R_D ALARM_D REGISTER
(MIN,HOUR)
ADDRESS
DECODER
ADDRESS
REGISTER
VOLTAGE
DETECT
DIV
TIME COUNTER
(SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR)
SHIFT REGISTER
I/O
CONTROL
FOUT
INTERRUPT CONTROL
CLK
DIVIDER
CORREC
-TION
V
DD
GND
COMPARATOR_W ALARM_W REGISTER
(MIN,HOUR, WEEK)
CE
OSC
DETECT D I
/
INT
DO
•
••
•
Features built-in 32.768
kHz cry stal unit
▪Frequency adjusted for high accuracy
( ± 5 ×10−6 /T
a
= +25 °C )
( Equivalent to 13 seconds of monthly deviation )
•
••
•
Th e various detection Function
▪Power supply voltage monitoring function
(with selectable detection threshold )
▪Stop detection function
▪Power-on reset detection function
•
••
•
Equipped with alarm and timer
▪
Timer function produces a periodic interruption signal.
As for the Alarm function an optional combination is
produced. (Date of the week , time , minute)
Pin f unct io n
Terminal connection
/
Ext er nal dimensions
(
Uni
:mm
)
Signal
Name
Input /
Output Function
CE Input
The chip enabled input pin.
( built -in pull-down resistance )
At the " H " level, access becomes possible.
CLK Input
The shift clock input pin for serial data transfer.
DI Input
The data input pin for serial data transfer.
DO Output
The data output pin for serial data transfer.
FOUT Output
32.768 kHz clock output pin with the output control
function ( N-ch open drain )
High impedance at the time of output off.
/ INT Output Interrupt output ( N-ch open drain )
TEST
-
∗ Used by the manufacturer for testing.
(Do not connect externally.)
V
DD
-
Connected to a positive power supply.
GND
-
Connected to a ground.
RX − 4045 SA
1. N.C. 14. N. C.
2. CLK 13. DO
3. FOUT 12. DI
4. N.C. 11. GND
5. TEST 10. / INT
6. V
DD
9. N.C.
7. CE
10.1
± 0.2
5.0
7.4
± 0.2
3.2
± 0.1
1.27
8. N. C.
SOP − 14 pin
RX − 4045 NB
1. CE 22. N.C.
2. V
DD
21. N.C.
3. (GND) 20. N.C.
4. TEST 19. N.C.
5. FOUT 18. N.C.
6. CLK 17. N.C.
7. DO 16. N.C.
8. DI 15. N.C.
9. GND 14. N.C.
10. / INT 13. −
11. N.C.
4.8
6.3
Max.
5.0
± 0. 2
0.5
1.3
± 0.1
12. −
SON − 22 pin
Metal may be exposed on the top or botto m of this product. This w ill not aff ect any quality, reliability or electrical spec.
S
p
ecifications
(
characteristics
)
∗ Refer to a
pp
licat ion manua l for details.
!
!!
!
Recommended Operating Conditions
Item Symbol Condition Min. Typ . Max. Unit
Power voltage V
DD
-
1.7 3.0 5.5 V
Clock voltage V
CLK
-
1.15 3.0 5.5 V
Operating
temperature T
OPR
-
-40 +25 +85
°C
!
!!
!
Frequency characteristics
Item Symbol Condition Rating Unit
Frequency
tolerance ∆ f / f T
a
= +25°C
V
DD
= 3.0 V
AA: 5 ± 5
∗1)
AC: 0 ± 5
∗2)
× 10
−6
Oscillation
start-up time
t
STA
T
a
= +25 °C
V
DD
= 2.0 V 1 Max. s
Frequen cy / voltage
characte ristics
f / V T
a
= +25 °C
V
DD
= 2.0 V to 5.5 V ± 1 Max . × 10
−6
∗1) ∗2) Equivalent to 13 seconds of monthly deviation (excluding offset.)
!
!!
!
Current consumption characteristics
T
a
= −40 °C to +85 °C
Item
Symbol
Condition Mi n. Typ. Max. Unit
V
DD
= 5 V 0.60 1.80
I
BK
CE = GND
FOUT ;
output OFF
(Hi-z)
V
DD
= 3 V 0.48 1.20
µA
Current
Consumption
I
32k
CE = GND
FOUT ;
32.768 kHz
output ON
V
DD
= 3 V 0.65 2.00 µA
!
!!
!
Power supply detection voltage
T
a
= −30 °C to +70 °C
Item Symbol Condition Mi n. Typ. Max. Unit
High-voltage mode V
DETH
V
DD
pin 1.90 2.10 2.30 V
Low-voltage mode V
DETL
V
DD
pin 1.15 1.30 1.4 5 V
RX-4045SA RX-4045NB
H igh-S ta bility Fr e qu e nc y
SERIAL-INTER FACE REA L TIME CLOCK M ODULE
RX
-
4045
SA
/
NB
•Built-in 32.768 kHz crystal unit : Frequency adjusted for high accuracy.
(± 5 ×10
−
6
/ T
a
= +25 °C)
•Interface Type : 4-wire serial interface
•Operating voltage range : 1.7 V to 5.5 V
•Wide Timekeeper voltage range : 1.15 V to 5.5 V
•Various detection Functions : Oscillation stop detection function etc.
•Low backup current : 0.48 µA / 3 V (Typ.)
•32.768 kHz clock frequency output : N-ch open drain output
•Function of time and calendar, the various detection function,
and interrupt function etc.
Product Number (Please contact us)
RX -4045SA : Q41404551xxxx00
RX- 4045N B : Q 41404591xxxx00
“QMEMS” EPSON TOYOCOM
In order to meet customer needs in a rapidly advancing digital,
broadband and ubiquitous society, we are committed to offering products
that are one step ahead of the market and a rank above the rest in quality.
To achieve our goals, we follow a “3D (three device) strategy” designed to
drive both horizontal and vertical growth. We will to grow our three device
categories of “Timing Devices”, ”Sensing Devices” and “Optical Devices”,
and expand vertical growth through a combination of products from these
categories.
A Quartz MEMS is any high added value quartz device that exploits the
characteristics of quartz crystal material but that is produced using MEMS
(micro-electro-mechanical system) processing technology.
Market needs are advancing faster than previously imagined toward
smaller, more stable crystal products, but we will stay ahead of the curve
by rolling out products that exceed market speed and quality
requirements. We want to further accelera te the 3D strategy by QMEMS.
Quartz devices have become crucial in the network environment where
products are increasingly intended for broadband, ubiquitous applications
and where various types of terminals can transfer information almost
immediately via LAN and WAN on a global scale. Epson Toyocom
Corporation addresses every single aspect within a network environment.
The new corporation offers “Digital Convergence” solutions to problems
arising with products for consumer use, such as, core network systems
and automoti ve systems.
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM
CONFORMING TO INTERNATIONAL STANDARDS
At Epson Toyocom, all environmental initiatives operate under
the Plan-Do-Check-Action(PDCA) cycle designed to achieve
continuous improvements. The environmental management
system (EMS) operates under the ISO 14001 environmental
management standard.
All of our major manufacturing and non-manufacturing sites,in Japan and overseas, completed the acquisition of ISO 14001 certification.
In the future, new group companies will be expected to acquire the certification around the third year of operations.
WORKING FOR HIGH QUALITY
In order provide high quality and reliable products and services than meet customer needs,
Epson Toyocom made early efforts towards obtaining ISO9000 series certification and has acquired ISO9001 for all business establishme nts i n Japa n
and abroad. We have also acquired ISO/TS 16949 certification that is requested strongly by major automotive manufacturers as standard.
►Explanation of the mark that are using it for the catalog
►Pb free.
►Complies with EU RoHS directive.
►Pb free terminal designed. Contains Pb in products exempted by RoHS directive.
(Contains Pb in sealing glass, high melting temperature type solder or other.)
►Complies with EU RoHS directive.
►The products have been designed for high reliability applications such as Automotive.
Notice
●This material is subject to change without notice.
●Any part of this material may not be reproduced or duplicated in any form or any means without the written permission of Epson To y o c o m .
●The information, applied circuitry, programming, usage, etc., written in this material is intended for reference only. Epson Toyocom does not
assume any liability for the occurrence of infringing on any patent or copyright of a third party. This material does not authorize the licensing for
any patent or intellectual copyrights.
●Any product described in this material may contain technology or the subject relating to strategic products under the control of the Foreign
Exchange and Foreign Trade Law of Japan and may require an export license from the Ministry of International Trade and Industry or other
approval from another government agency.
●You are requested not to use the products (and any technical information furnished, if any) for the development and/or manufacture of weapon
of mass destruction or for other military purposes. You are also requested that you would not make the products available to any third party
who may use the products for such prohibited purposes.
●These products are intended for general use in electronic equipment. When using them in specific applications that require extremely high
reliability, such as the applications stated below, you must obtain permission from Epson Toyocom in advance.
/ Space equipment (artificial satellites, rockets, etc.) / Transportation vehicles and related (automobiles, aircraft, trains, vessels, etc.)
/ Medical instruments to sustain life / Submarine transmitters / Power stations and related / Fire work equipment and security equipment
/ traffic control equipment / and others requiring equivalent reliability.
● In this new crystal master for Epson Toyocom, product codes and markings will remain as previously identified prior to the merger.
Due to the on-going strategy of gradual unification of part numbers, please review product codes and markings, as they will change during the
course of the coming months.
We apologize for the inconvenience, but we will eventually have a unified part numbering system for Epson Toyocom that will be user friendly.
QS-9000 is an enhanced standard for quality assurance systems
formulated by leading U.S. automobile manufacturers based on the
international ISO 9000 series.
ISO 14000 is an international standard for environmental management
that was established by the International Standards Organization in 1996
against the background of growing concern regarding global warming,
destruction of the ozone layer and global
deforestation
ISO/TS 16949 is a global standard based on QS-9000, a severe standard
corresponding to the requirements from the automobile industry.