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RX-8025NB

型号:

RX-8025NB

描述:

I2C总线接口的实时时钟模块[ I2C-Bus INTERFACE REAL TIME CLOCK MODULE ]

品牌:

EPSONTOYOCOM[ EPSON TOYOCOM ]

页数:

2 页

PDF大小:

365 K

Real time clock module  
Epson Toyocom  
Product Number (Please contact us)  
RX-8025SA: Q41802551xxxx00  
RX-8025NB : Q41802591xxxx00  
High-Stability  
I2C-Bus INTERFACE REAL TIME CLOCK MODULE  
RX - 8025SA NB  
/
Built-in 32.768 kHz crystal unit  
: Frequency adjusted for high accuracy  
(± 5 ×106 / T  
= +25 °C)  
: I2C-Bus Interface (400 kHz)  
a
Interface Type  
Operating voltage range: 1.70 V to 5.5 V  
Wide Timekeeper voltage range  
Various detection Functions  
Low backup current  
32.768 kHz frequency output function : C-MOS output With Control Pin  
The various functions include full calendar, alarm, timer.  
: 1.15 V to 5.5 V  
: Ex. Oscillation stop detection function  
: 0.48 µA / 3 V (Typ.)  
Actual size  
RX-8025SA  
RX-8025NB  
* The I2C-Bus is a trademark of NXP Semiconductors  
Block diagram  
Overview  
Features built-in 32.768 kHz crystal unit  
• Frequency adjusted for high accuracy.  
Alarm_W Register  
( Min, Hour,W eek )  
Comparator_W  
Comparator_D  
( ± 5 ×106  
/ Ta = +25 °C )  
FOUT  
FOE  
32 k Hz  
Output  
Control  
V
DD  
Voltage  
Detect  
( Equivalent to 13 seconds of monthly deviation )  
Alarm_D Register  
( Min,Hour )  
The various detection function  
• Power supply voltage monitoring function  
(with selectable detection threshold )  
• Stop detection function  
• Power-on reset detection function  
Divider  
Correc  
-tion  
Time Counter  
( Sec,Min,Hour,Week,Day,Month,Year )  
Div.  
OSC  
Alarm function and Timer function  
• Timer function produces a periodic interruption signal.  
As for the Alarm function an optional combination is produced.  
(Date of the week , time , minute)  
Address  
Decoder  
Address  
Register  
SCL  
OSC  
Detect  
I/O  
Control  
SDA  
GND  
/ INTA  
/ INTB  
Interrupt Control  
Shift Register  
Pin Function  
Terminal connection / External dimensions  
(Unit:mm)  
Signal  
Name  
SCL  
RX 8025 SA  
RX 8025 NB  
Input / output  
Function  
Input  
Bi-directional  
N.C.  
22.  
Serial clock input pin  
Data input and output pin  
32.768 kHz clock output pin with the output  
control function. (C-MOS)  
1. FOE  
2.  
1. N.C.  
2. SCL  
3. FOUT  
4. N.C.  
5. TEST  
14. N.C.  
13. SDA  
12. / INTB  
11. GND  
10. / INTA  
9. N.C.  
SDA  
N.C.  
V
DD  
21.  
3. (GND)  
4. TEST  
5. FOUT  
6. SCL  
20. N.C.  
FOUT  
FOE  
Output  
Input  
FOE  
input  
L
/CLEN1 /CLEN2  
FOUT  
output  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
19.  
18.  
17.  
16.  
15.  
14.  
13.  
12.  
bit  
X
0
0
1
bit  
X
0
1
0
OFF ( LOW )  
32.768 kHz  
32.768 kHz  
32.768 kHz  
OFF(LOW)  
5.0  
H
4.8  
7. SDA  
8. / INTB  
9. GND  
1
1
1.3  
±
0.1  
/ INTA  
/ INTB  
Output  
Output  
6.  
VDD  
Interrupt output A pin ( N-ch open drain )  
Interrupt output B pin ( N-ch open drain )  
±
7.4 0.2  
10.  
/ INTA  
7. FOE  
8. N.C.  
5.0 ±  
0.2  
Used by the manufacture for testing.  
(Do not connect externally.)  
TEST  
11. N.C.  
SOP 14 pin  
SON 22 pin  
V
DD  
Connected to a positive power supply.  
Connected to a ground.  
GND  
Metal may be exposed on the top or bottom of this product. This w ill not affect any quality, reliability or electrical spec.  
Specifications (characteristics)  
Refer to application manual for details.  
.
!
!
Current consumption characteristics  
Recommended Operating Conditions  
40  
°
°
to +85 C  
Ta  
=
C
Item  
Symbol  
Condition  
SCL  
= 0Hz  
FOE = GND  
FOUT; output  
OFF(LOW)  
Min. Typ. Max. Unit  
Item  
Symbol  
Condition  
Min.  
Typ.  
Max.  
Unit  
DD  
V
Power voltage  
Clock voltage  
Operating  
VDD  
1.7  
1.15  
3.0  
3.0  
5.5  
5.5  
V
V
f
0.60 1.80  
µA  
0.48 1.20  
CLK  
= 5 V  
V
I
BK  
VDD  
OPR  
40  
°
C
T
+25  
+85  
temperature  
= 3 V  
Curent  
Consumption  
f
SCL  
= 0Hz  
!
Frequency characteristics  
DD  
V
= 5.5 V  
DD  
V
, FOE = 5.5 V  
I
32k  
3.0  
6.5  
µA  
FOUT; output ON  
( Output=OPEN;  
CL = 0 pF )  
Item  
Symbol  
Condition  
Range  
Unit  
1)  
2)  
a
°
±
±
Frequency  
tolerance  
Oscillation  
start-up time  
Frequency voltage  
characteristics  
T
V
T
V
T
V
= +25 C  
AA: 5  
AC: 0  
5
5
6
6
×
f / f  
10  
s
DD  
= 3.0 V  
°
a
= +25 C  
!
t
STA  
Power supply detection voltage  
30  
°
°
C
1 Max.  
Ta  
=
C
to +70  
DD = 2.0 V  
°
a = +25 C  
Item  
Symbol  
Condition  
Min. Typ. Max. Unit  
±
×
10  
f / V  
1 Max.  
DD  
= 2.0 V to 5.5 V  
DETH  
DD  
High-voltage mode  
Low-voltage mode  
V
V
pin  
1.90 2.10 2.30  
1.15 1.30 1.45  
V
V
1) 2) Equivalent to 13 seconds of monthly deviation (excluding offset).  
V
DETL  
V
DD pin  
http://www.epsontoyocom.co.jp  
“QMEMS” EPSON TOYOCOM  
In order to meet customer needs in a rapidly advancing digital,  
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 automotive systems.  
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 accelerate the 3D strategy by QMEMS.  
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM  
CONFORMING TO INTERNATIONAL STANDARDS  
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.  
At Epson Toyocom, all environmental initiatives operate under  
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  
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 establishments in Japan  
and abroad. We have also acquired ISO/TS 16949 certification that is requested strongly by major automotive manufacturers as standard.  
ISO/TS 16949 is a global standard based on QS-9000, a severe standard  
corresponding to the requirements from the automobile industry.  
QS-9000 is an enhanced standard for quality assurance systems  
formulated by leading U.S. automobile manufacturers based on the  
international ISO 9000 series.  
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 yo 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.  
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