Actual size
http://www.epsontoyocom.co.jp
Real time clock module
Real time clock moduleReal time clock module
Real time clock module
86
Block diagram
Overview
32kHz
OUTPUT
CONTROL
OSC
COMPARATOR_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 quartz os cillat o r
▪Frequency adjusted for high precision
( ± 5 ×10
−6
/T
a
= +25 °C )
( Equivalent to 13 seconds of monthly deviation )
•
••
•
The various detect i on 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 function
Terminal conn ection
/
Ex te rnal dim ensions
(
Unit: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 bottom of this product. This will not affect any quality, reliability or electrical spec.
S
ecifications
characteristics
∗Refer to a
pp
li cat ion manual 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
Frequency / voltage
characteristics
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.)
!
!!
!
DC characteristics
T
a
= −40 °C to +85 °C
Item
Symbol
Condition Min. 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 Min. 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 1.45 V
RX-4045SA RX-4045NB
High-Stability Frequency
SERIAL-INT ERF ACE REAL TIME CLOC K MODUL E
RX
-
4045
SA
/
NB
•Built-in 32.768 kHz quartz oscillator : Frequency adjusted for high accuracy.
(± 5 ×10
−6
/ T
a
= +25 °C)
•Interface Type : 4 wire high accuracy 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.
“3D STRATEGY” 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.
Quartz dev ice s 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 Corporat ion addre ss es ev ery s ingl e
aspect within a network environment. The new corporation offers
“Digital Convergenc e” solutions to problems arising with products
for consumer u se, su ch as, cor e network sy st ems an d autom otive
systems.
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM
CONFORMING TO INTERNATIONAL STANDARDS
At Epson Toyocom, all environmental initiatives operat e under the Plan-Do-Check -A ct i on(PDCA) cycle designed to achieve continuous improvements.
The environm ental management system (EMS ) operat es under the ISO 14001 envi ronm ental management standard.
All of our major manufacturi ng and non-m anufact uri ng si t es, in Japan and overseas, completed t he acquisi ti on of ISO 14001 certi fication.
In the future, new group companies will be expec t ed to acquire the certificat ion around the third year of operations.
WORKING FOR HIGH QUALITY
Epson Toyocom quickly began working to acquire c om pany-wide ISO 9000 series cert ific at i on, and has acquired ISO 9001 or ISO 9002 certification for
all targeted products manufactured in Japanese and overseas plants.
Epson Toyocom has acquired QS-9000 certific ation, which is of a higher level.
Also, TS 16949 certification, which is also of a higher level, has been acquired.
Notice
●This material is subject to change without notice.
●Any part of this mat eri al may not be reproduc ed or duplicated in any form or any means without the written perm is sion of Epson Toyocom.
●The information, applied circuitry, programmi ng, usage, etc., written in this material is intended for reference only. Epson Toyoc om 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 on for any patent
or intellect ual c opyri ghts.
●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 anot her governm ent agenc y.
● You are requested not t o use the products (and any technical information furnished, if any) for t he devel opment and/or manufacture of weapon of
mass destruct ion or for other mi litary purposes. You are also requested that you would not make the products available to any t hird part y who may
use the products for such prohibited purposes.
●These products are intended for general use in el ect ronic equipm ent. When using t hem in speci fic applicat ions that require extrem el y high reli abilit y,
such as the applicati ons stated below, you m ust obtain permissi on from Epson Toyocom in advance.
/ Space equipment (art i ficial satellites, rockets, etc.) / Transportation vehicles and related (automobiles, aircraft, trains, vessels, etc.)
/ Medical instruments to sustain life / Submarine transm i tt ers / Power stations and relat ed / Fire work equipm ent and security equipment
/ traffic control equipment / and others requiring equival ent reliability.
● In this new crystal master for Epson Toyoc om, 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
assuranc e syst ems formulated by leading
U.S.automobi l e manuf act urers based on
the international ISO 9000 seri es.
ISO 14000 is an international standard for environm ental
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 deforestati on.
ISO/TS 16949 is a global standard based on
QS-9000, a severe standard corresponding t
o
the requirements from the automobile industry.