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RX-4581NB

型号:

RX-4581NB

描述:

串行接口的实时时钟模块[ SERIAL-INTERFACE REAL TIME CLOCK MODULE ]

品牌:

EPSONTOYOCOM[ EPSON TOYOCOM ]

页数:

2 页

PDF大小:

296 K

Real time clock module  
Epson Toyocom  
Product Number (Please contact us)  
RX-4581NB : Q41458191000200  
Built-in SRAM  
SERIAL-INTERFACE REAL TIME CLOCK MODULE  
RX- 4581NB  
Built in frequency adjusted 32.768 kHz crystal unit.  
Interface Type  
:
:
:
:
:
:
4-wire serial interface  
1.6 V to 5.5 V  
Operating voltage range  
Wide Timekeeper voltage range  
Low backup current  
1.6 V to 5.5 V  
0.4 µA / 3 V ( Typ. )  
Built-in SRAM  
Built-in 128 bit ( 8 bit  
× 16 ) RAM.  
Actual size  
32.768 kHz frequency output function  
C-MOS output With Control Pin  
The various functions include full calendar, alarm, timer.  
Block diagram  
Overview  
32.768 kHz  
Built-in SRAM  
• Include 128 bit ( 8 bit × 16 ) RAM.  
CLOCK  
and  
CALENDAR  
DIVIDER  
OSC  
Interface Type  
• Serial interface in 4 lines form.  
It is possible to make it to 3 lines by wired-OR connecting  
DI and DO pins.  
FOUT  
FOE  
FOUT  
TIMER  
CONTROLLER  
REGISTER  
32.768 kHz frequency output function  
• FOUT pin output (C-MOS output), CL=30 pF  
• FOE pin enables output on/off control.  
/ AIRQ  
/ TIRQ  
INTERRUPTS  
CONTROLLER  
ALARM  
REGISTER  
Timer function  
D I  
CONTROL  
REGISTER  
• Timer function can be set up between  
1/4096 second and 4095 minutes.  
• It is recorded automatic to TF-bit at the time of event  
occurrence,and possible to output with /TIRQ pin output  
(open-drain output).  
DO  
BUS  
CLK  
CE1  
CE0  
INTERFACE  
CIRCUIT  
and  
SYSTEM  
CONTROLLER  
Interrupt function  
• Alarm interrupt function , and timer interrupt function.  
RAM 128 bit  
×
( 8 bit 16 )  
Pin Function  
Terminal connection/Externaldimensions  
(Unit:mm)  
RX 4581 NB  
Signal Name Input/Output  
Function  
N.C.  
N.C.  
1. GND  
2. CE1  
3. CE0  
4. DI  
22.  
21.  
CE0  
CE1  
CLK  
DI  
Input  
Input  
The chip enabled input pin 0. ( It has a built -in pull-down resistance )  
The chip enabled input pin 1. ( It does not have a built -in pull-down resistance )  
The shift clock input pin for serial data transfer.  
20. N.C.  
Input  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
19.  
18.  
17.  
16.  
15.  
14.  
13.  
12.  
Input  
The data input pin for serial data trasfer.  
5. DO  
DO  
Output  
The data output pin for serial data trasfer.  
6. CLK  
7. / TIRQ  
8. / AIRQ  
9. FOE  
10. FOUT  
4.8  
This pin outputs the reference clock signal at 32.768 kHz ( CMOS output ).  
High impedance at the time of output off.  
FOUT  
Output  
± 0.1  
1.3  
FOE  
Input  
The input pin for the FOUT output control.  
/ AIRQ  
/ TIRQ  
Output  
Output  
The open drain output pin for alarm and time update interrupts.  
0.2  
±
5.0  
11.  
VDD  
The open drain output pin for timer interrupt.  
Connected to a positive power supply.  
Connected to a ground.  
SON 22 pin  
DD  
V
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  
Ta = 40 °C to +85 °C  
Item  
Symbol  
Condition  
Min.  
Typ.  
Max.  
Unit  
Item  
Symbol  
Condition  
Min. Typ. Max. Unit  
Power voltage  
Clock voltage  
Operating  
V
DD  
1.6  
1.6  
3.0  
3.0  
5.5  
5.5  
V
V
DD  
V
V
CLK  
CE0, CE1 = GND  
FOE = GND  
0.6  
0.4  
1.2  
0.8  
= 5 V  
OPR  
T
40  
°
C
+25  
+85  
µ
BK  
I
A
temperature  
output OFF  
( Hi - z )  
FOUT;  
DD  
V
= 3 V  
!
Frequency characteristics  
Current  
Consumption  
Item  
Symbol  
Condition  
Rating  
Unit  
DD  
V
= 5 V  
CE0, CE1 = GND  
FOE = VDD  
8.0 20.0  
5.0 12.0  
a °  
T = +25 C  
Frequency  
tolerance  
6  
×
f / f  
10  
±
5
23  
DD  
µ
A
V
= 3.0 V  
32k  
I
FOUT;  
32.768 kHz output ON  
CL = 30 pF  
VDD  
a
°
Oscillation  
start-up time  
T
= +25 C  
s
tSTA  
3 Max.  
= 3 V  
VDD = 3.0 V  
Please ask for tighter tolerance. (Equivalent to 1 minute of monthly deviation)  
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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