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RX-4581NB:B3

型号:

RX-4581NB:B3

品牌:

SEIKO[ SEIKO EPSON CORPORATION ]

页数:

2 页

PDF大小:

249 K

Real time clock module  
Product Number (Please contact us)  
RX-4581NB : Q41458192000200  
REAL TIME CLOCK MODULE (SPI-Bus)  
Built-in SRAM  
RX-4581NB  
Built in frequency adjusted 32.768 kHz crystal unit.  
Interface Type  
: 4-wire serial interface  
: 1.6Vto5.5V  
Operating voltage range  
Wide Timekeeper voltage range : 1.6Vto5.5V  
Low backup current  
Built-in SRAM  
: 0.4A/3V(Typ.)  
:
:
Built-in 128  
bit(8bit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 128bit(8bit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  
FOUT  
FOE  
FOUT  
TIMER  
DI and DO pins.  
CONTROLLER  
REGISTER  
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  
 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).  
BUS  
DO  
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/External dimensions  
(Unit:mm)  
RX  
4581NB  
N.C.  
N.C.  
1. GND  
2. CE1  
3. CE0  
4. DI  
22.  
21.  
Signal Name Input/Output  
Function  
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.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
N.C.  
  
19.  
18.  
17.  
16.  
15.  
14.  
13.  
12.  
Input  
5. DO  
Input  
The data input pin for serial data trasfer.  
6. CLK  
7. /TIRQ  
DO  
Output  
The data output pin for serial data trasfer.  
4.8  
8.  
/AIRQ  
This pin outputs the reference clock signal at 32.768 kHz ( CMOS output ).  
High impedance at the time of output off.  
FOUT  
Output  
1.30.1  
9. FOE  
10. FOUT  
11. VDD  
FOE  
Input  
Output  
Output  
The input pin for the FOUT output control.  
5.00.2  
  
/ AIRQ  
The open drain output pin for alarm and time update interrupts.  
SON22 pin  
/ TIRQ  
VDD  
The open drain output pin for timer interrupt.  
Connected to a positive power supply.  
Connected to a ground.  
  
The metal case inside of the molding compound may be exposed  
on the top or bottom of this product.  
GND  
This purely cosmetic and does not have any effect on quality,  
reliability or electrical specs.  
Specifications (characteristics)  
*Refer to application manual for details.  
Recommended Operating Conditions  
Current consumption characteristics  
Ta=-40Cto+85C  
Item  
Symbol  
Conditions  
Min.  
Typ.  
Max.  
Unit  
Item  
Symbol  
Conditions  
Min. Typ. Max. Unit  
Power voltage  
Clock voltage  
Operating  
VDD  
VCLK  
1.6  
1.6  
3.0  
3.0  
5.5  
5.5  
V
V
VDD  
=5V  
CE0,CE1=GND  
FOE=GND  
-
-
-
-
0.6  
0.4  
1.2  
0.8  
TOPR  
-40  
+25  
+85  
C  
IBK  
A  
A  
temperature  
FOUT;output OFF  
(Hi-z)  
VDD  
=3V  
Frequency characteristics  
Current  
Consumption  
Item  
Symbol  
Conditions  
Rating  
Unit  
CE0,CE1=GND  
FOE=VDD  
VDD  
=5V  
8.0 20.0  
5.0 12.0  
Frequency  
tolerance  
Ta=+25C  
VDD=3.0V  
6
f/f  
10  
B: 523  
3Max.  
I32k  
FOUT;  
32.768kHz output ON  
CL=30pF  
VDD  
=3V  
Ta=+25C  
VDD=3.0V  
Oscillation  
start-up time  
s
tSTA  
Please ask for tighter tolerance. (Equivalent to 1 minute of monthly deviation)  
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM  
CONFORMING TO INTERNATIONAL STANDARDS  
At Seiko Epson, all environmental initiatives operate under the  
Plan-Do-Check-Action (PDCA) cycle designed to achieve continuous  
ISO 14000 is an international standard for environmental  
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.  
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.  
WORKING FOR HIGH QUALITY  
In order provide high quality and reliable products and services  
than meet customer needs,  
ISO/TS16949 is the international standard that added the  
sector-specific supplemental requirements for automotive  
industry based on ISO9001.  
Seiko Epson 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.  
Explanation of the mark that are using it for the catalog  
Pb free.  
Complies with EU RoHS directive.  
*About the products without the Pb-free mark.  
Contains Pb in products exempted by EU RoHS directive.  
(Contains Pb in sealing glass, high melting temperature type solder or other.)  
Designed for automotive applications such as Car Multimedia, Body Electronics, Remote Keyless Entry etc.  
Designed for automotive applications related to driving safety (Engine Control Unit, Air Bag, ESC etc ).  
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 Seiko Epson.  
The information about applied circuitry, software, usage, etc. written in this material is intended for reference only. Seiko Epson 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.  
When exporting the products or technology described in this material, you should comply with the applicable export control laws and  
regulations and follow the procedures required by such laws and regulations.  
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 Seiko Epson 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.  
All brands or product names mentioned herein are trademarks and/or registered trademarks of their respective.  
Seiko Epson Corporation  
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