RTC-4574JE:B [SEIKO]

REAL TIME CLOCK, PDSO20, VSOJ-20;


型号：	RTC-4574JE:B
厂家：	SEIKO EPSON CORPORATION
描述：	REAL TIME CLOCK, PDSO20, VSOJ-20 光电二极管外围集成电路
文件：	总2页 (文件大小：288K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Real time clock module

Product Number (Please contact us)

RTC-4574SA : Q41457452000200

RTC-4574JE : Q41457471000100

RTC-4574NB : Q41457492000100

REAL TIME CLOCK MODULE (SPI-Bus)

RTC - 4574SA/JE/NB

Built in frequency adjusted 32.768 kHz crystal unit.

Interface Type

: 3-wire serial interface

Operating voltage range

Wide Timekeeper voltage range

Low backup current

: 1.6Vto5.5V

: 0.5A/3V(Typ.)

32.768 kHz frequency output function : C-MOS output With Control Pin

The various functions include full calendar, alarm, timer.

Actual size

RTC-4574SA

RTC-4574JE

RTC-4574NB

 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 selectable from1/30Hz to 32.768kHz

(32 Values)

OSC

CLOCK and

CALENDAR

DIVIDER

Timer function

FOUT

FCON

• Timer function can be set up between 1/4096 second and

255 minutes.

OUTPUT

TIMER

CONTROLLER

• 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

DATA

CLK

CONTROL

• Alarm function can be set to any combination of day of week,

hour, or minute.

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 RX-4574LC.

 Terminal connection/External dimensions

(Unit:mm)

RTC4574SA

RTC4574JE

RTC4574NB

1. GND

2. FCON

3. N.C.

4. CE1

5. DATA

6. CLK

22. N.C.

21. N.C.

20. N.C.

19. N.C.

18. N.C.

17. N.C.

16. N.C.

15. N.C.

14. N.C.

1. VDD

2. FOUT

3. CE0

20. N.C.

19. N.C.

18. N.C.

17. N.C.

16. N.C.

15. N.C.

14. N.C.

13. N.C.

12. N.C.

11. N.C.

1. GND

2. FOUT

3. N.C.

4. N.C.

5. N.C.

6. N.C.

7. VDD

14. FCON

13. CE1

12. DATA

11. CLK

/AIRQ

/TIRQ

5.0

6. CLK

7. DATA

8. CE1

4.8

/TIRQ

/AIRQ

5.4

10.

/TIRQ

/AIRQ

1.30.1

1.5

Max.

9. CE0

10. FOUT

11. VDD

9. FCON

10. GND

13.

12.



7.40.2

8. CE0

5.00.2

6.00.2

SOP14 pin

VSOJ20 pin

SON22 pin

The metal case inside of the molding compound may be exposed on the top or bottom of this product. 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Cto+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

3.0

5.5

VDD

=5V



1.0

0.5

2.0

1.0

CE0,CE1=GND

TOPR

-40

+25

+85

°C

IBK

µA

temperature

FOUT;output OFF

(Hi-z)

VDD

=3V



 Frequency characteristics

Current

Consumption

Item

Symbol

Conditions

Rating

Unit

VDD

=5V



CE0=GND

CE1=VDD

8.0 20.0

5.0 12.0

Ta=+25°C

VDD=3.0V

Frequency

tolerance

f/f

10^



B: 523

3Max.

I32k

FOUT;

32.768kHzoutput ON

CL=30pF

VDD

=3V



Ta=+25°C

VDD=1.6V

Oscillation

start-up time

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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