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RX-4574LC:B0

型号:

RX-4574LC:B0

品牌:

SEIKO[ SEIKO EPSON CORPORATION ]

页数:

2 页

PDF大小:

237 K

Real time clock module  
Product Number (Please contact us)  
RX-4574LC : Q414574C2000300  
REAL TIME CLOCK MODULE (SPI-Bus)  
RX - 4574LC  
Built in frequency adjusted 32.768 kHz crystal unit.  
Interface Type  
: 3-wire serial interface  
: 1.6Vto5.5V  
Operating voltage range  
Wide Timekeeper voltage range : 1.3Vto5.5V  
Low backup current  
: 0.35A/3V(Typ.)  
32.768 kHz frequency output function : C-MOS output With Control Pin  
The various functions include full calendar, alarm, timer.  
Actual size  
Block diagram  
Overview  
32.768 kHz  
CONTROL LINE  
32.768 kHz frequency output function  
• FOUT pin output (C-MOS output), CL=30 pF  
• Output frequency is selectable from 1/30Hzto 32.768kHz  
(32 Values)  
OSC  
CLOCK and  
CALENDAR  
DIVIDER  
Timer function  
FOUT  
FCON  
• Timer function which can be set up between  
1/4096 second and 255 minutes.  
OUTPUT  
TIMER  
CONTROLLER  
REGISTER  
REGISTER  
• It is recorded automatically to TF-bit at the time of event  
occurrence, and it’s possible to output with /TIRQ pin output  
(open-drain output).  
/ TIRQ  
/ AIRQ  
INTERRUPTS  
CONTROLLER  
ALARM  
• Selectable one time mode or repeat mode.  
Alarm function  
• Alarm function can be set to any combination of day of  
week, hour, or minute.  
DATA  
CLK  
CONTROL  
REGISTER  
BUS  
•It is recorded automatically to AF-bit at the time of event  
occurrence, and it’s possible to output with /AIRQ pin output  
(open-drain output).  
INTERFACE  
CIRCUIT  
CE 1  
CE 0  
SHIFT REGISTER  
Functions are compatible with RTC-4574SA/JE/NB.  
Pin Function  
Terminal connection/External dimensions  
RX4574LC  
(Unit:mm)  
Signal Name Input / Output  
Function  
1. N.C.  
2. N.C.  
12. VDD  
11. CE1  
10. CLK  
9. DATA  
8. CE0  
The chip enabled input pin 0. (Built-in pull-down resistance)  
When both CE0 and CE1 pins are at the “H” level , access to this  
Real time clock module becomes possible.  
The chip enabled input pin 1.  
When the CE1 pin is at the HIGH level, the FOUT pin is in the output state.  
CE0  
CE1  
Input  
Input  
3.  
4.  
/
/
TIRQ  
AIRQ  
CLK  
Input  
Bi-directional  
Output  
The shift clock input pin for serial data transfer.  
The data input / output pin for serial data transfer.  
2.4  
DATA  
This pin outputs the reference clock signal at 32.768 kHz ( C-MOS output ).  
High impedance at the time of output off.  
FOUT  
5. FCON  
6. FOUT  
FCON  
/ AIRQ  
/ TIRQ  
VDD  
Input  
The input pin for the FOUT output control.  
The open drain output pin for alarm and time update interrupts.  
The open drain output pin for timer interrupt.  
Connected to a positive power supply.  
7. GND  
2.8  
Output  
Output  
VSOJ12pin  
*Stop using the glue  
Any glue must never use it after soldering LC-package to a circuit board.This product  
has glass on the back side of a package.When glue invasions between circuit board  
side and glass side, then glass cracks by thermal expansion of glue.In this case a  
crystal oscillation stops.Consider glue abolition or glue do not touch to LC-package  
GND  
Connected to a ground.  
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  
1.3  
3.0  
3.0  
5.5  
5.5  
V
V
VDD  
=5V  
-
-
-
-
0.45 0.9  
0.35 0.7  
8.0 20.0  
5.0 12.0  
TOPR  
-40  
+25  
+85  
C  
CE0,CE1=GND  
temperature  
IBK  
µA  
µA  
FOUT;output OFF  
(Hi-z)  
VDD  
=3V  
Frequency characteristics  
Item  
Symbol  
Conditions  
Rating  
Unit  
Current  
Consumption  
VDD  
=5V  
Ta=+25C  
Frequency  
tolerance  
6
f/f  
B: 523*  
1Max.  
10  
CE0=GND  
CE1=VDD  
VDD=3.0V  
Ta=+25C  
VDD=1.6V  
I32k  
s
s
FOUT;  
VDD  
=3V  
Oscillation  
Start-up time  
tSTA  
32.768kHz output ON  
CL=30pF  
Ta=-40Cto+85C  
VDD=1.6V  
3Max.  
*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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